Native plants · Pennsylvania

Native plants of Allegheny County

997 plant species are recorded as native to Pennsylvania in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Allegheny County by USDA PLANTS. 402 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 4 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Allegheny County, Pennsylvania

Native species: 997 Typical Pennsylvania county: 763 (median of 67 counties)
Garden-ready natives: 402 Typical Pennsylvania county: 331
Share by type (all 997 native species): Percent of the 997 native species in each growth type

Tree 12% (122)
Shrub 6% (56)
Wildflower (forb) 55% (545)
Grass or grass-like 18% (180)
Vine 4% (42)
Fern 5% (52)

Wildflowers make up the largest share of the native list (55%), followed by grasses and grass-like plants (18%).

Recorded native ranges can include long-established populations that spread from gardens; check your state’s native plant society list for local guidance. How native status is decided.

ZIP codes mainly in this county fall in USDA hardiness zones 6b to 7a (2023 map).

The native plant list

Garden-ready natives 402

Native species with PLANTS growing records (height, light, moisture, minimum temperature). “—” means PLANTS has no value.

Garden-ready native plants of Allegheny County, Pennsylvania
Plant	Type	Height	Light	Water use	Hardy to
alderleaf buckthorn Rhamnus alnifolia	Shrub	3 ft	Shade-tolerant	High	Zone 4a
Allegheny serviceberry Amelanchier laevis	Tree	35 ft	Shade-tolerant	Medium	Zone 3b
alternateleaf dogwood Cornus alternifolia	Tree	25 ft	Shade-tolerant	Medium	Zone 2b
American basswood Tilia americana	Tree	100 ft	Shade-tolerant	Medium	Zone 2b
American beech Fagus grandifolia	Tree	80 ft	Shade-tolerant	Medium	Zone 3a
American bellflower Campanulastrum americanum	Wildflower (forb)	6 ft	Shade-tolerant	Medium	Zone 12b
American bittersweet Celastrus scandens	Vine	15 ft	Shade-tolerant	High	Zone 3b
American black currant Ribes americanum	Shrub	3 ft	—	—	Zone 2b
American bur-reed Sparganium americanum	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 4a
American chestnut Castanea dentata	Tree	115 ft	Sun	Medium	Zone 4a
American eelgrass Vallisneria americana	Wildflower (forb)	1 ft	Sun	High	Zone 4a
American elm Ulmus americana	Tree	120 ft	Sun–part shade	High	Zone 2b
American hazelnut Corylus americana	Shrub	10 ft	Sun–part shade	Medium	Zone 4a
American holly Ilex opaca	Tree	40 ft	Shade-tolerant	Medium	Zone 5a
American hornbeam Carpinus caroliniana	Tree	30 ft	Shade-tolerant	Medium	Zone 4a
American plum Prunus americana	Tree	24 ft	Sun	Medium	Zone 3b
American pokeweed Phytolacca americana	Wildflower (forb)	7.3 ft	Shade-tolerant	Medium	Zone 4a
American red raspberry Rubus idaeus	Shrub	6 ft	Shade-tolerant	—	Zone 1a
American speedwell Veronica americana	Wildflower (forb)	10 in	Shade-tolerant	High	Zone 3b
American sycamore Platanus occidentalis	Tree	100 ft	Sun–part shade	High	Zone 4a
American vetch Vicia americana	Vine	1.3 ft	Sun	Low	Zone 3b
American water horehound Lycopus americanus	Wildflower (forb)	1.8 ft	Shade-tolerant	High	Zone 3b
American water plantain Alisma subcordatum	Wildflower (forb)	6 in	Sun	High	Zone 4a
American water-willow Justicia americana	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 4b
American witchhazel Hamamelis virginiana	Tree	20 ft	Sun–part shade	Medium	Zone 4b
annual wildrice Zizania aquatica	Grass or grass-like	9.8 ft	Sun	High	Zone 10b
arrowleaf tearthumb Polygonum sagittatum	Vine	1 ft	Sun	Medium	Zone 6a
Atlantic camas Camassia scilloides	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 4b
awlfruit sedge Carex stipata	Grass or grass-like	3.5 ft	Shade-tolerant	Medium	Zone 3b
Bailey's sedge Carex baileyi	Grass or grass-like	2.1 ft	Shade-tolerant	High	Zone 4a
balsam poplar Populus balsamifera	Tree	80 ft	Sun	High	Zone 1a
beaked agrimony Agrimonia rostellata	Wildflower (forb)	2.3 ft	Sun–part shade	Medium	Zone 4a
beaked hazelnut Corylus cornuta	Tree	15 ft	Shade-tolerant	Medium	Zone 2b
big bluestem Andropogon gerardii	Grass or grass-like	6 ft	Sun	Low	Zone 2b
bigleaf aster Eurybia macrophylla	Wildflower (forb)	4.6 ft	Shade-tolerant	Medium	Zone 4b
bigtooth aspen Populus grandidentata	Tree	65 ft	Sun	High	Zone 3a
bitternut hickory Carya cordiformis	Tree	75 ft	Sun	Medium	Zone 2b
black ash Fraxinus nigra	Tree	65 ft	Sun	High	Zone 2b
black cherry Prunus serotina	Tree	80 ft	Sun	Medium	Zone 4a
black chokeberry Aronia melanocarpa	Shrub	6 ft	Shade-tolerant	—	Zone 9b
black huckleberry Gaylussacia baccata	Shrub	4 ft	Shade-tolerant	Low	Zone 4a
black locust Robinia pseudoacacia	Tree	60 ft	Sun	Medium	Zone 3b
black maple Acer nigrum	Tree	100 ft	Shade-tolerant	Medium	Zone 2b
black oak Quercus velutina	Tree	80 ft	Sun–part shade	Medium	Zone 4a
black raspberry Rubus occidentalis	Shrub	6 ft	Sun–part shade	Medium	Zone 4b
black walnut Juglans nigra	Tree	100 ft	Sun	High	Zone 4b
black willow Salix nigra	Tree	100 ft	Sun	High	Zone 1b
blackeyed Susan Rudbeckia hirta	Wildflower (forb)	1 ft	Sun	Medium	Zone 5a
blackgum Nyssa sylvatica	Tree	95 ft	Shade-tolerant	Medium	Zone 5b
blackhaw Viburnum prunifolium	Tree	16 ft	Shade-tolerant	Medium	Zone 4a
blue cohosh Caulophyllum thalictroides	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 4a
blue mistflower Conoclinium coelestinum	Wildflower (forb)	3.2 ft	Shade-tolerant	Medium	Zone 6a
bluejoint Calamagrostis canadensis	Grass or grass-like	4.9 ft	Sun	Medium	Zone 4a
blunt broom sedge Carex tribuloides	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 4b
blunt spikerush Eleocharis obtusa	Grass or grass-like	1.6 ft	Sun	Medium	Zone 11a
bluntleaf bedstraw Galium obtusum	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4a
bottle gentian Gentiana clausa	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 3b
boxelder Acer negundo	Tree	60 ft	Shade-tolerant	Medium	Zone 2b
bristly buttercup Ranunculus hispidus	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 4a
bristly dewberry Rubus hispidus	Shrub	2 ft	Sun	High	Zone 3b
broadfruit bur-reed Sparganium eurycarpum	Wildflower (forb)	4.9 ft	Sun–part shade	High	Zone 4a
broadleaf arrowhead Sagittaria latifolia	Wildflower (forb)	4.9 ft	Sun	High	Zone 4a
broadleaf cattail Typha latifolia	Wildflower (forb)	5 ft	Sun–part shade	High	Zone 3b
broadleaf rosette grass Dichanthelium latifolium	Grass or grass-like	3.3 ft	Sun–part shade	Low	Zone 3a
broom sedge Carex scoparia	Grass or grass-like	2.5 ft	Shade-tolerant	High	Zone 3b
broomsedge bluestem Andropogon virginicus	Grass or grass-like	3 ft	Sun	Medium	Zone 5b
bulbous bittercress Cardamine bulbosa	Wildflower (forb)	1.4 ft	Shade-tolerant	Medium	Zone 4a
bur oak Quercus macrocarpa	Tree	100 ft	Sun–part shade	Medium	Zone 3b
bur-reed sedge Carex sparganioides	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
burningbush Euonymus atropurpureus	Tree	10 ft	Shade-tolerant	Low	—
Bush's sedge Carex bushii	Grass or grass-like	2 ft	Sun–part shade	Medium	Zone 5a
butterfly milkweed Asclepias tuberosa	Wildflower (forb)	2 ft	Sun	Low	Zone 4a
butternut Juglans cinerea	Tree	80 ft	Sun	Medium	Zone 4a
calico aster Symphyotrichum lateriflorum	Wildflower (forb)	4 ft	Sun	Medium	Zone 4a
Canada germander Teucrium canadense	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 3a
Canada goldenrod Solidago altissima	Wildflower (forb)	5 ft	Sun–part shade	Medium	Zone 4b
Canada goldenrod Solidago canadensis	Wildflower (forb)	3.5 ft	Sun	Medium	Zone 3a
Canada wildrye Elymus canadensis	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 3a
Canada yew Taxus canadensis	Shrub	5 ft	Shade-tolerant	Medium	Zone 4b
Canadian horseweed Conyza canadensis	Wildflower (forb)	5 ft	Sun	Medium	Zone 12b
Canadian lousewort Pedicularis canadensis	Wildflower (forb)	1.3 ft	Shade-tolerant	Medium	Zone 3a
Canadian milkvetch Astragalus canadensis	Wildflower (forb)	6 in	Sun	Medium	Zone 3b
Canadian rush Juncus canadensis	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 4a
Canadian waterweed Elodea canadensis	Wildflower (forb)	—	Sun	High	Zone 4a
cardinalflower Lobelia cardinalis	Wildflower (forb)	5.9 ft	Shade-tolerant	Low	Zone 4a
Carolina rose Rosa carolina	Shrub	5 ft	Sun–part shade	Low	Zone 3a
cat greenbrier Smilax glauca	Vine	1 ft	Shade-tolerant	Medium	Zone 6a
cattail sedge Carex typhina	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 4b
chestnut oak Quercus montana	Tree	73 ft	Sun–part shade	Medium	Zone 4a
chinquapin oak Quercus muehlenbergii	Tree	70 ft	Sun	Medium	Zone 4a
chokecherry Prunus virginiana	Tree	25 ft	Sun	Medium	Zone 3a
cinnamon fern Osmunda cinnamomea	Fern	4.9 ft	Shade-tolerant	Medium	Zone 4a
climbing rose Rosa setigera	Vine	16 ft	Sun	Low	Zone 6a
closed bottle gentian Gentiana andrewsii	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
coastal plain willow Salix caroliniana	Tree	33 ft	Sun–part shade	High	Zone 7b
cockspur hawthorn Crataegus crus-galli	Tree	30 ft	Sun	Low	Zone 4a
common blue violet Viola sororia	Wildflower (forb)	4 in	Sun–part shade	High	Zone 4b
common blue wood aster Symphyotrichum cordifolium	Wildflower (forb)	5 ft	Sun	Low	Zone 3b
common buttonbush Cephalanthus occidentalis	Tree	15 ft	Shade-tolerant	High	Zone 4a
common cowparsnip Heracleum maximum	Wildflower (forb)	8 ft	Sun	High	Zone 3b
common duckweed Lemna minor	Wildflower (forb)	—	Sun	High	Zone 3b
common evening primrose Oenothera biennis	Wildflower (forb)	5 ft	Sun	Medium	Zone 4b
common goldstar Hypoxis hirsuta	Wildflower (forb)	10 in	Sun–part shade	Medium	Zone 4a
common hackberry Celtis occidentalis	Tree	60 ft	Shade-tolerant	Low	Zone 2b
common hoptree Ptelea trifoliata	Tree	25 ft	Sun–part shade	High	Zone 4a
common juniper Juniperus communis	Tree	10 ft	Sun	Low	Zone 3a
common ninebark Physocarpus opulifolius	Shrub	10 ft	Sun	Low	Zone 4a
common persimmon Diospyros virginiana	Tree	55 ft	Shade-tolerant	Medium	Zone 5a
common rush Juncus effusus	Grass or grass-like	6.6 ft	Sun	Medium	Zone 3b
common selfheal Prunella vulgaris	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 3b
common serviceberry Amelanchier arborea	Tree	36 ft	Shade-tolerant	Medium	Zone 2b
common sneezeweed Helenium autumnale	Wildflower (forb)	4.9 ft	Sun	Medium	Zone 3a
common snowberry Symphoricarpos albus	Shrub	3 ft	Sun	Medium	Zone 3b
common spikerush Eleocharis palustris	Grass or grass-like	1.3 ft	Sun	High	Zone 3b
common threesquare Schoenoplectus pungens	Grass or grass-like	4.9 ft	Sun	High	Zone 3b
common winterberry Ilex verticillata	Tree	10 ft	Sun–part shade	High	Zone 4b
composite dropseed Sporobolus compositus	Grass or grass-like	3 ft	Sun	Low	Zone 3b
crested sedge Carex cristatella	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
crested woodfern Dryopteris cristata	Fern	1.6 ft	Shade-tolerant	High	Zone 4a
crimsoneyed rosemallow Hibiscus moscheutos	Wildflower (forb)	6.6 ft	Sun	High	Zone 6a
crookedstem aster Symphyotrichum prenanthoides	Wildflower (forb)	4 ft	Sun	Medium	Zone 3b
cucumber tree Magnolia acuminata	Tree	100 ft	Sun–part shade	High	Zone 5b
cup plant Silphium perfoliatum	Wildflower (forb)	6 ft	Sun–part shade	—	Zone 2b
cutleaf coneflower Rudbeckia laciniata	Wildflower (forb)	8.2 ft	Shade-tolerant	Low	Zone 3b
deerberry Vaccinium stamineum	Shrub	16 ft	Shade-tolerant	Low	Zone 5a
deertongue Dichanthelium clandestinum	Grass or grass-like	2 ft	Sun	Low	Zone 4a
dense blazing star Liatris spicata	Wildflower (forb)	4.5 ft	Sun–part shade	Medium	Zone 5b
devil's beggartick Bidens frondosa	Wildflower (forb)	4 ft	Sun–part shade	Medium	Zone 12a
devil's darning needles Clematis virginiana	Vine	15 ft	Sun–part shade	Medium	Zone 3b
devil's walkingstick Aralia spinosa	Tree	20 ft	Sun	High	Zone 4b
ditch stonecrop Penthorum sedoides	Wildflower (forb)	2.6 ft	Sun–part shade	Medium	Zone 4b
dotted smartweed Polygonum punctatum	Wildflower (forb)	3.2 ft	Sun	Medium	Zone 10b
downy arrowwood Viburnum rafinesqueanum	Shrub	6 ft	Shade-tolerant	Low	Zone 3a
downy yellow violet Viola pubescens	Wildflower (forb)	1.3 ft	Shade-tolerant	Medium	Zone 4a
drooping sedge Carex prasina	Grass or grass-like	2.3 ft	Shade-tolerant	Medium	Zone 4b
dwarf St. Johnswort Hypericum mutilum	Wildflower (forb)	2.6 ft	Sun–part shade	Medium	Zone 5a
eastern cottonwood Populus deltoides	Tree	190 ft	Sun	High	Zone 3a
eastern hemlock Tsuga canadensis	Tree	105 ft	Shade-tolerant	Medium	Zone 4a
eastern narrowleaf sedge Carex amphibola	Grass or grass-like	2 ft	Shade-tolerant	Medium	Zone 7a
eastern redbud Cercis canadensis	Tree	30 ft	Shade-tolerant	Low	Zone 4b
eastern redcedar Juniperus virginiana	Tree	50 ft	Sun–part shade	Low	Zone 3a
eastern rough sedge Carex scabrata	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
eastern teaberry Gaultheria procumbens	Shrub	6 in	Shade-tolerant	Low	Zone 4a
eastern white pine Pinus strobus	Tree	150 ft	Sun–part shade	Medium	Zone 4a
eastern woodland sedge Carex blanda	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 4b
fall panicgrass Panicum dichotomiflorum	Grass or grass-like	3.3 ft	Sun	High	Zone 3a
false daisy Eclipta prostrata	Wildflower (forb)	3.2 ft	Sun–part shade	Medium	Zone 10b
false indigo bush Amorpha fruticosa	Shrub	15 ft	Sun	Low	Zone 3b
field horsetail Equisetum arvense	Fern	11 in	Sun–part shade	High	Zone 3a
fireweed Chamerion angustifolium	Wildflower (forb)	5.5 ft	Sun–part shade	High	Zone 3b
flowering dogwood Cornus florida	Tree	30 ft	Shade-tolerant	Low	Zone 4b
fowl bluegrass Poa palustris	Grass or grass-like	4 ft	Sun–part shade	Medium	Zone 3b
fowl mannagrass Glyceria striata	Grass or grass-like	5.7 ft	Shade-tolerant	Medium	Zone 3b
fox sedge Carex vulpinoidea	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 3b
Frank's sedge Carex frankii	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 5a
fringed sedge Carex crinita	Grass or grass-like	5.2 ft	Sun–part shade	Medium	Zone 4a
frost grape Vitis vulpina	Vine	83 ft	Sun–part shade	Medium	Zone 5a
Georgia bulrush Scirpus georgianus	Grass or grass-like	4.5 ft	Sun–part shade	Medium	Zone 3b
giant goldenrod Solidago gigantea	Wildflower (forb)	8.2 ft	Sun–part shade	Medium	Zone 4a
golden ragwort Packera aurea	Wildflower (forb)	3.9 ft	Shade-tolerant	High	Zone 3a
golden tickseed Coreopsis tinctoria	Wildflower (forb)	3 ft	Sun–part shade	High	Zone 12b
graceful sedge Carex gracillima	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 4a
grassleaf rush Juncus marginatus	Grass or grass-like	2 ft	Sun–part shade	Medium	Zone 5a
gray dogwood Cornus racemosa	Shrub	10 ft	Shade-tolerant	Medium	Zone 2b
gray goldenrod Solidago nemoralis	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
Gray's sedge Carex grayi	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
graybark grape Vitis cinerea	Vine	50 ft	Sun–part shade	Medium	Zone 6b
great laurel Rhododendron maximum	Tree	25 ft	Shade-tolerant	Medium	Zone 6a
great St. Johnswort Hypericum ascyron	Wildflower (forb)	5 ft	Sun	Medium	Zone 5a
greater straw sedge Carex normalis	Grass or grass-like	5 ft	Shade-tolerant	High	Zone 4a
green ash Fraxinus pennsylvanica	Tree	80 ft	Shade-tolerant	Medium	Zone 2b
green bulrush Scirpus atrovirens	Grass or grass-like	5.9 ft	Sun	Medium	Zone 2a
groundnut Apios americana	Vine	1 ft	Shade-tolerant	Medium	Zone 5a
hairy lespedeza Lespedeza hirta	Wildflower (forb)	6 ft	Sun	Low	Zone 6a
hairy white oldfield aster Symphyotrichum pilosum	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 4a
hardstem bulrush Schoenoplectus acutus	Grass or grass-like	9.8 ft	Sun	High	Zone 3b
harvestlice Agrimonia parviflora	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 4a
hazel alder Alnus serrulata	Tree	30 ft	Sun	High	Zone 5a
highbush blueberry Vaccinium corymbosum	Shrub	12 ft	Shade-tolerant	Medium	Zone 4a
honeylocust Gleditsia triacanthos	Tree	70 ft	Sun	Medium	Zone 3b
hop sedge Carex lupulina	Grass or grass-like	4.3 ft	Sun–part shade	Medium	Zone 3b
hophornbeam Ostrya virginiana	Tree	45 ft	Shade-tolerant	Low	Zone 3b
horseflyweed Baptisia tinctoria	Wildflower (forb)	2.5 ft	Sun	Low	Zone 7b
Indian woodoats Chasmanthium latifolium	Grass or grass-like	4.6 ft	Shade-tolerant	Medium	Zone 4a
Indiangrass Sorghastrum nutans	Grass or grass-like	6 ft	Sun	Medium	Zone 3b
Indianhemp Apocynum cannabinum	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 3a
inkberry Ilex glabra	Shrub	8 ft	Sun	High	Zone 6a
interrupted fern Osmunda claytoniana	Fern	4 ft	Shade-tolerant	High	Zone 3b
Jack in the pulpit Arisaema triphyllum	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 5b
Jerusalem artichoke Helianthus tuberosus	Wildflower (forb)	9.8 ft	Sun–part shade	Low	Zone 3a
jewelweed Impatiens capensis	Wildflower (forb)	4.9 ft	Shade-tolerant	Medium	Zone 10b
Kentucky coffeetree Gymnocladus dioicus	Tree	100 ft	Sun	Medium	Zone 4a
knotted rush Juncus nodosus	Grass or grass-like	2 ft	Sun	Medium	Zone 4b
lanceleaf loosestrife Lysimachia lanceolata	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 5a
lanceleaf tickseed Coreopsis lanceolata	Wildflower (forb)	2 ft	Sun	Medium	Zone 6b
late purple aster Symphyotrichum patens	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	Zone 3b
limestone bittercress Cardamine douglassii	Wildflower (forb)	1 ft	Shade-tolerant	High	Zone 4a
limestone meadow sedge Carex granularis	Grass or grass-like	2.5 ft	Shade-tolerant	High	Zone 4a
little bluestem Schizachyrium scoparium	Grass or grass-like	3 ft	Sun	Low	Zone 3b
littleleaf buttercup Ranunculus abortivus	Wildflower (forb)	2.8 ft	Shade-tolerant	Medium	Zone 3a
longleaf pondweed Potamogeton nodosus	Wildflower (forb)	—	Sun	High	Zone 3b
longleaf starwort Stellaria longifolia	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 3b
lopsided rush Juncus secundus	Grass or grass-like	1.5 ft	Sun	Low	Zone 4a
lowbush blueberry Vaccinium angustifolium	Shrub	2 ft	Sun	Medium	Zone 4a
Malabar sprangletop Leptochloa fusca	Grass or grass-like	3.3 ft	Sun	High	Zone 3a
maleberry Lyonia ligustrina	Shrub	9 ft	Shade-tolerant	—	Zone 5a
mapleleaf viburnum Viburnum acerifolium	Shrub	6 ft	Shade-tolerant	Medium	Zone 4b
marsh bellflower Campanula aparinoides	Wildflower (forb)	2 ft	Sun	High	Zone 3b
marsh seedbox Ludwigia palustris	Wildflower (forb)	2 in	Sun	High	Zone 4a
Maryland senna Senna marilandica	Wildflower (forb)	6.6 ft	Sun–part shade	Low	Zone 5b
meadow evening primrose Oenothera pilosella	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 5a
Missouri River willow Salix eriocephala	Tree	52 ft	Shade-tolerant	High	Zone 3b
mockernut hickory Carya tomentosa	Tree	85 ft	Sun–part shade	Medium	Zone 4a
moss phlox Phlox subulata	Wildflower (forb)	6 in	Sun–part shade	High	Zone 4b
mountain laurel Kalmia latifolia	Tree	6 ft	Shade-tolerant	Low	Zone 5a
mountain maple Acer spicatum	Tree	25 ft	Shade-tolerant	Medium	Zone 2b
nannyberry Viburnum lentago	Tree	28 ft	Shade-tolerant	Medium	Zone 4a
narrowleaf blue-eyed grass Sisyrinchium angustifolium	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 7a
narrowleaf evening primrose Oenothera fruticosa	Wildflower (forb)	3.3 ft	Shade-tolerant	High	Zone 4a
necklace sedge Carex projecta	Grass or grass-like	2 ft	Shade-tolerant	Medium	Zone 4a
needle spikerush Eleocharis acicularis	Grass or grass-like	8 in	Sun	Medium	Zone 5a
nerveless woodland sedge Carex leptonervia	Grass or grass-like	2 ft	Shade-tolerant	Medium	Zone 4a
New Jersey tea Ceanothus americanus	Shrub	3 ft	Shade-tolerant	Low	Zone 4b
New York fern Thelypteris noveboracensis	Fern	1.5 ft	Shade-tolerant	Low	Zone 4b
New York ironweed Vernonia noveboracensis	Wildflower (forb)	6.6 ft	Sun–part shade	Medium	Zone 4a
nimblewill Muhlenbergia schreberi	Grass or grass-like	3.2 ft	Shade-tolerant	Low	Zone 4a
nodding beggartick Bidens cernua	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
nodding fescue Festuca subverticillata	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 3a
nodding lady's tresses Spiranthes cernua	Wildflower (forb)	1.5 ft	Sun	High	Zone 3b
northern bayberry Morella pensylvanica	Tree	12 ft	Sun	Medium	Zone 4b
northern bedstraw Galium boreale	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 4a
northern bush honeysuckle Diervilla lonicera	Shrub	2.4 ft	Sun–part shade	Low	Zone 5a
northern maidenhair Adiantum pedatum	Fern	1.3 ft	Shade-tolerant	Medium	Zone 3b
northern red oak Quercus rubra	Tree	81 ft	Sun–part shade	Medium	Zone 3b
northern spicebush Lindera benzoin	Tree	12 ft	Sun–part shade	Medium	Zone 5a
northern St. Johnswort Hypericum boreale	Wildflower (forb)	10 in	Sun–part shade	High	Zone 4a
Ohio buckeye Aesculus glabra	Tree	68 ft	Shade-tolerant	Medium	Zone 4a
orangegrass Hypericum gentianoides	Wildflower (forb)	2 ft	Sun–part shade	Low	Zone 12a
oval-leaf sedge Carex cephalophora	Grass or grass-like	2.6 ft	Sun–part shade	Low	Zone 4a
pale touch-me-not Impatiens pallida	Wildflower (forb)	8.2 ft	Shade-tolerant	Medium	Zone 10b
panicledleaf ticktrefoil Desmodium paniculatum	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 6a
paper birch Betula papyrifera	Tree	70 ft	Sun	High	Zone 1a
partridge pea Chamaecrista fasciculata	Wildflower (forb)	2.4 ft	Shade-tolerant	Medium	Zone 7a
pawpaw Asimina triloba	Tree	25 ft	Shade-tolerant	Medium	Zone 4b
Pennsylvania bittercress Cardamine pensylvanica	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 4a
Pennsylvania smartweed Polygonum pensylvanicum	Wildflower (forb)	3.9 ft	Sun	Medium	Zone 10b
perplexed ticktrefoil Desmodium perplexum	Wildflower (forb)	4 ft	Sun–part shade	Medium	Zone 4a
Philadelphia fleabane Erigeron philadelphicus	Wildflower (forb)	2.8 ft	Sun–part shade	Medium	Zone 4b
pignut hickory Carya glabra	Tree	80 ft	Sun–part shade	Medium	Zone 4a
pin cherry Prunus pensylvanica	Tree	30 ft	Sun	Medium	Zone 3b
pin oak Quercus palustris	Tree	100 ft	Sun	High	Zone 4a
pink azalea Rhododendron periclymenoides	Shrub	10 ft	Shade-tolerant	Low	Zone 5b
pipsissewa Chimaphila umbellata	Shrub	1.5 ft	Shade-tolerant	Low	Zone 3b
pitch pine Pinus rigida	Tree	80 ft	Sun	Low	Zone 3a
poverty rush Juncus tenuis	Grass or grass-like	1.5 ft	Sun–part shade	Medium	Zone 3b
prairie cordgrass Spartina pectinata	Grass or grass-like	8 ft	Sun	High	Zone 3b
prairie fleabane Erigeron strigosus	Wildflower (forb)	3 ft	Sun	Medium	Zone 4b
prairie wedgescale Sphenopholis obtusata	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 3a
prairie willow Salix humilis	Shrub	10 ft	Sun–part shade	High	Zone 3a
pride of Ohio Dodecatheon meadia	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 3b
purple avens Geum rivale	Wildflower (forb)	3 ft	Sun	High	Zone 4a
purple lovegrass Eragrostis spectabilis	Grass or grass-like	11 in	Sun	Low	Zone 3a
purpleflowering raspberry Rubus odoratus	Shrub	5 ft	Sun–part shade	Medium	Zone 3b
purplehead sneezeweed Helenium flexuosum	Wildflower (forb)	3.2 ft	Sun	Low	Zone 4b
purpleleaf willowherb Epilobium coloratum	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 4a
purplestem aster Symphyotrichum puniceum	Wildflower (forb)	8.1 ft	Sun	High	Zone 3b
purplestem beggarticks Bidens connata	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
purpletop tridens Tridens flavus	Grass or grass-like	2.5 ft	Sun	Low	Zone 5a
pussy willow Salix discolor	Tree	40 ft	Shade-tolerant	High	Zone 4a
quaking aspen Populus tremuloides	Tree	65 ft	Sun	High	Zone 1a
rattlesnake fern Botrychium virginianum	Fern	1.4 ft	Shade-tolerant	Medium	Zone 3b
rattlesnake mannagrass Glyceria canadensis	Grass or grass-like	3.2 ft	Sun	Medium	Zone 4a
red chokeberry Aronia arbutifolia	Shrub	5 ft	Sun	High	Zone 5b
red elderberry Sambucus racemosa	Tree	18 ft	Sun–part shade	High	Zone 4a
red maple Acer rubrum	Tree	68 ft	Sun–part shade	High	Zone 2b
red mulberry Morus rubra	Tree	70 ft	Shade-tolerant	Medium	Zone 4a
red pine Pinus resinosa	Tree	80 ft	Sun	Low	Zone 3a
redosier dogwood Cornus sericea	Tree	12 ft	Sun	High	Zone 3b
redroot flatsedge Cyperus erythrorhizos	Grass or grass-like	2.5 ft	Sun	Medium	Zone 11a
reed canarygrass Phalaris arundinacea	Grass or grass-like	5 ft	Sun	High	Zone 3b
ribbonleaf pondweed Potamogeton epihydrus	Wildflower (forb)	—	Sun	High	Zone 4a
rice cutgrass Leersia oryzoides	Grass or grass-like	4.9 ft	Sun	High	Zone 4a
ridged yellow flax Linum striatum	Wildflower (forb)	2.6 ft	Shade-tolerant	Medium	Zone 3a
riverbank grape Vitis riparia	Vine	45 ft	Sun–part shade	Medium	Zone 4a
riverbank wildrye Elymus riparius	Grass or grass-like	4.5 ft	Shade-tolerant	High	Zone 4a
rough avens Geum laciniatum	Wildflower (forb)	3.1 ft	Sun–part shade	Medium	Zone 5a
rough bedstraw Galium asprellum	Wildflower (forb)	5.9 ft	Shade-tolerant	Medium	Zone 4a
rough bentgrass Agrostis scabra	Grass or grass-like	2.5 ft	Sun	Medium	Zone 3b
roundhead lespedeza Lespedeza capitata	Wildflower (forb)	2.6 ft	Sun	Low	Zone 4b
roundleaf goldenrod Solidago patula	Wildflower (forb)	6.6 ft	Sun–part shade	High	Zone 3a
rufous bulrush Scirpus pendulus	Grass or grass-like	4 ft	Sun	Medium	Zone 3b
sandbar willow Salix interior	Tree	30 ft	Sun	—	Zone 1a
sandcherry Prunus pumila	Shrub	6 ft	Shade-tolerant	Low	Zone 4a
sassafras Sassafras albidum	Tree	75 ft	Sun	Low	Zone 4b
sawtooth sunflower Helianthus grosseserratus	Wildflower (forb)	5 ft	Sun	Medium	Zone 3a
scarlet Indian paintbrush Castilleja coccinea	Wildflower (forb)	1.6 ft	Shade-tolerant	Medium	Zone 4b
scarlet oak Quercus coccinea	Tree	70 ft	Sun	Medium	Zone 4b
shagbark hickory Carya ovata	Tree	75 ft	Sun–part shade	Medium	Zone 3a
shallow sedge Carex lurida	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 4a
sharpwing monkeyflower Mimulus alatus	Wildflower (forb)	2.3 ft	Shade-tolerant	High	Zone 5a
shingle oak Quercus imbricaria	Tree	45 ft	Sun	Medium	Zone 5b
shining willow Salix lucida	Tree	13 ft	Sun–part shade	High	Zone 3a
Short's sedge Carex shortiana	Grass or grass-like	3 ft	Sun–part shade	High	Zone 5b
shortawn foxtail Alopecurus aequalis	Grass or grass-like	2.5 ft	Sun–part shade	High	Zone 3b
shrubby St. Johnswort Hypericum prolificum	Shrub	3.2 ft	Sun–part shade	High	Zone 4b
silky dogwood Cornus amomum	Shrub	10 ft	Sun–part shade	High	Zone 3b
silky willow Salix sericea	Tree	12 ft	Sun–part shade	High	Zone 4b
silver maple Acer saccharinum	Tree	90 ft	Sun–part shade	Medium	Zone 2b
silvery sedge Carex canescens	Grass or grass-like	2 ft	Sun–part shade	High	Zone 4a
skunk cabbage Symplocarpus foetidus	Wildflower (forb)	2 ft	Shade-tolerant	High	Zone 4a
slender flatsedge Cyperus bipartitus	Grass or grass-like	5 ft	Sun	Medium	Zone 10b
slender spikerush Eleocharis tenuis	Grass or grass-like	2.9 ft	Sun	Low	Zone 5a
slippery elm Ulmus rubra	Tree	85 ft	Shade-tolerant	High	Zone 3a
small enchanter's nightshade Circaea alpina	Wildflower (forb)	11 in	Shade-tolerant	Medium	Zone 3b
small white violet Viola macloskeyi	Wildflower (forb)	6 in	Shade-tolerant	High	Zone 4b
smallspike false nettle Boehmeria cylindrica	Wildflower (forb)	3.9 ft	Shade-tolerant	Medium	Zone 4a
smooth azalea Rhododendron arborescens	Shrub	18 ft	Shade-tolerant	Medium	Zone 6a
smooth blue aster Symphyotrichum laeve	Wildflower (forb)	4 ft	Sun	Medium	Zone 3a
smooth hedgenettle Stachys tenuifolia	Wildflower (forb)	25 ft	Shade-tolerant	High	Zone 4a
smooth horsetail Equisetum laevigatum	Fern	5 ft	Sun	Low	Zone 3b
smooth sumac Rhus glabra	Tree	12 ft	Sun	Low	Zone 4a
softstem bulrush Schoenoplectus tabernaemontani	Grass or grass-like	9 ft	Sun	High	Zone 3b
sourwood Oxydendrum arboreum	Tree	35 ft	Shade-tolerant	Low	Zone 6a
spiked muhly Muhlenbergia glomerata	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4a
spotted joe pye weed Eutrochium maculatum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 4b
spotted St. Johnswort Hypericum punctatum	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 4a
spring avens Geum vernum	Wildflower (forb)	1.6 ft	Shade-tolerant	Medium	Zone 5b
squarrose sedge Carex squarrosa	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 4b
staghorn sumac Rhus typhina	Tree	30 ft	Sun–part shade	Low	Zone 4a
steeplebush Spiraea tomentosa	Shrub	4 ft	Sun	Low	Zone 4a
stiff marsh bedstraw Galium tinctorium	Wildflower (forb)	10 in	Shade-tolerant	High	Zone 4a
strawcolored flatsedge Cyperus strigosus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 4a
striped maple Acer pensylvanicum	Tree	35 ft	Shade-tolerant	Low	Zone 2b
sugar maple Acer saccharum	Tree	100 ft	Shade-tolerant	Medium	Zone 2b
summer grape Vitis aestivalis	Vine	30 ft	Shade-tolerant	Medium	Zone 5a
swamp milkweed Asclepias incarnata	Wildflower (forb)	4.9 ft	Sun	High	Zone 3b
swamp rose Rosa palustris	Shrub	8.2 ft	Shade-tolerant	Medium	Zone 4a
swamp smartweed Polygonum hydropiperoides	Wildflower (forb)	—	Sun	Medium	Zone 10b
swamp white oak Quercus bicolor	Tree	100 ft	Sun–part shade	High	Zone 4b
sweet birch Betula lenta	Tree	60 ft	Sun	Medium	Zone 4b
sweet fern Comptonia peregrina	Shrub	2 ft	Sun–part shade	Low	Zone 3b
sweet woodreed Cinna arundinacea	Grass or grass-like	4.9 ft	Shade-tolerant	Low	Zone 4a
sweetbay Magnolia virginiana	Tree	60 ft	Sun–part shade	High	Zone 9a
sweetgum Liquidambar styraciflua	Tree	100 ft	Sun	High	Zone 5a
switchgrass Panicum virgatum	Grass or grass-like	5 ft	Sun	Medium	Zone 3a
tall cinquefoil Potentilla arguta	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 3b
tall hairy agrimony Agrimonia gryposepala	Wildflower (forb)	5.9 ft	Sun–part shade	Medium	Zone 3a
tapertip rush Juncus acuminatus	Grass or grass-like	3 ft	Sun–part shade	High	Zone 4a
tawny cottongrass Eriophorum virginicum	Grass or grass-like	3.9 ft	Sun	Medium	Zone 4a
teal lovegrass Eragrostis hypnoides	Grass or grass-like	4 in	Sun	High	Zone 3b
threelobe beggarticks Bidens tripartita	Wildflower (forb)	3.5 ft	Sun–part shade	High	Zone 12a
toad rush Juncus bufonius	Grass or grass-like	1 ft	Sun	Medium	Zone 12a
Torrey's rush Juncus torreyi	Grass or grass-like	3.1 ft	Sun	Medium	Zone 3b
troublesome sedge Carex molesta	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
trumpet creeper Campsis radicans	Vine	2 ft	Sun	Low	Zone 6a
trumpet honeysuckle Lonicera sempervirens	Vine	16 ft	Shade-tolerant	Medium	Zone 4a
trumpetweed Eutrochium fistulosum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 4b
tuliptree Liriodendron tulipifera	Tree	120 ft	Sun	Medium	Zone 5b
twisted sedge Carex torta	Grass or grass-like	2.8 ft	Shade-tolerant	Medium	Zone 4a
twoheaded water-starwort Callitriche heterophylla	Wildflower (forb)	—	Sun	High	Zone 4a
umbrella-tree Magnolia tripetala	Tree	30 ft	Shade-tolerant	Medium	Zone 7a
upland bentgrass Agrostis perennans	Grass or grass-like	3.5 ft	Sun–part shade	High	Zone 4a
variable panicgrass Dichanthelium commutatum	Grass or grass-like	4.9 ft	Sun–part shade	Low	Zone 4b
vernal water-starwort Callitriche palustris	Wildflower (forb)	10 in	Sun	Medium	Zone 4a
Virginia bluebells Mertensia virginica	Wildflower (forb)	2.3 ft	Shade-tolerant	High	Zone 4b
Virginia creeper Parthenocissus quinquefolia	Vine	1 ft	Sun–part shade	Low	Zone 4b
Virginia pine Pinus virginiana	Tree	70 ft	Sun	Low	Zone 5a
Virginia rose Rosa virginiana	Shrub	6 ft	Sun–part shade	Medium	Zone 5b
Virginia spiderwort Tradescantia virginiana	Wildflower (forb)	1.1 ft	Sun–part shade	Medium	Zone 3b
Virginia threeseed mercury Acalypha virginica	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 10b
Virginia water horehound Lycopus virginicus	Wildflower (forb)	4 ft	Shade-tolerant	High	Zone 4a
Virginia wildrye Elymus virginicus	Grass or grass-like	2.5 ft	Shade-tolerant	Medium	Zone 4b
water horsetail Equisetum fluviatile	Fern	3 ft	Sun	High	Zone 4a
water knotweed Polygonum amphibium	Wildflower (forb)	1 in	Sun	High	Zone 5a
waterthread pondweed Potamogeton diversifolius	Wildflower (forb)	3.2 ft	Sun	High	Zone 3b
western pearly everlasting Anaphalis margaritacea	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 3a
white ash Fraxinus americana	Tree	90 ft	Sun	High	Zone 4a
white avens Geum canadense	Wildflower (forb)	3.9 ft	Shade-tolerant	Medium	Zone 4a
white edge sedge Carex debilis	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 6a
white fringetree Chionanthus virginicus	Tree	25 ft	Shade-tolerant	High	Zone 4a
white meadowsweet Spiraea alba	Shrub	3 ft	Sun–part shade	Medium	Zone 4a
white oak Quercus alba	Tree	100 ft	Sun–part shade	Medium	Zone 3a
white panicle aster Symphyotrichum lanceolatum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 3b
whitegrass Leersia virginica	Grass or grass-like	3.9 ft	Shade-tolerant	Medium	Zone 3a
wild bergamot Monarda fistulosa	Wildflower (forb)	4.9 ft	Sun–part shade	High	Zone 4a
wild blue phlox Phlox divaricata	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 4a
wild sarsaparilla Aralia nudicaulis	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 3b
wild sweetwilliam Phlox maculata	Wildflower (forb)	2 ft	Sun	Medium	Zone 5b
winged sumac Rhus copallinum	Tree	8 ft	Sun	Low	Zone 4b
winter bentgrass Agrostis hyemalis	Grass or grass-like	3.5 ft	Sun–part shade	High	Zone 4a
wirestem muhly Muhlenbergia frondosa	Grass or grass-like	2 ft	Shade-tolerant	Medium	Zone 3b
woodland bluegrass Poa sylvestris	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
woodland horsetail Equisetum sylvaticum	Fern	11 in	Shade-tolerant	Low	Zone 3a
woodland muhly Muhlenbergia sylvatica	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4b
woolgrass Scirpus cyperinus	Grass or grass-like	4.9 ft	Sun–part shade	High	Zone 4a
wreath goldenrod Solidago caesia	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 4b
wrinkleleaf goldenrod Solidago rugosa	Wildflower (forb)	3.3 ft	Sun–part shade	Medium	Zone 4a
yellow buckeye Aesculus flava	Tree	65 ft	Shade-tolerant	High	Zone 5b
yellow fumewort Corydalis flavula	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 5b
yellow marsh marigold Caltha palustris	Wildflower (forb)	2 ft	Sun	High	Zone 3b
yellow passionflower Passiflora lutea	Vine	16 ft	Shade-tolerant	Low	Zone 5a
zigzag goldenrod Solidago flexicaulis	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 5b

Other native species recorded here 595

PLANTS has no growing records for these, so light, moisture, height and zone filters cannot include them. Many are wild species seldom sold by nurseries.

Adam and Eve Aplectrum hyemale
Allegheny hawkweed Hieracium paniculatum
Allegheny monkeyflower Mimulus ringens
Allegheny Mountain buttercup Ranunculus allegheniensis
allegheny vine Adlumia fungosa
alpine violet Viola labradorica
amberique-bean Strophostyles helvola
American alumroot Heuchera americana
American bladdernut Staphylea trifolia
American burnweed Erechtites hieraciifolius
American cancer-root Conopholis americana
American false pennyroyal Hedeoma pulegioides
American fly honeysuckle Lonicera canadensis
American ginseng Panax quinquefolius
American golden saxifrage Chrysosplenium americanum
American hogpeanut Amphicarpaea bracteata
American lopseed Phryma leptostachya
American mannagrass Glyceria grandis
American marshpennywort Hydrocotyle americana
American senna Senna hebecarpa
American spikenard Aralia racemosa
American stoneseed Lithospermum latifolium
American wintergreen Pyrola americana
Apocynum ×floribundum Apocynum ×floribundum
Appalachian barren strawberry Waldsteinia fragarioides
Appalachian gooseberry Ribes rotundifolium
Appalachian sedge Carex appalachica
Appalachian stitchwort Minuartia glabra
aromatic aster Symphyotrichum oblongifolium
arrowleaf violet Viola sagittata
ashy sunflower Helianthus mollis
Atlantic goldenrod Solidago arguta
autumn coralroot Corallorhiza odontorhiza
bald spikerush Eleocharis erythropoda
balm-of-Gilead Populus ×jackii
bashful bulrush Trichophorum planifolium
bastard toadflax Comandra umbellata
bay forget-me-not Myosotis laxa
bayberry willow Salix myricoides
bear oak Quercus ilicifolia
Bebb willow Salix bebbiana
beechdrops Epifagus virginiana
beggarslice Hackelia virginiana
biennial beeblossom Oenothera gaura
big devils beggartick Bidens vulgata
black baneberry Actaea racemosa
blackseed plantain Plantago rugelii
blisterwort Ranunculus recurvatus
bloodroot Sanguinaria canadensis
Blue Ridge blueberry Vaccinium pallidum
Blue Ridge sedge Carex lucorum
blue sedge Carex glaucodea
blue skullcap Scutellaria lateriflora
blue waxweed Cuphea viscosissima
blue wild indigo Baptisia australis
bluejacket Tradescantia ohiensis
bluntleaf waterleaf Hydrophyllum canadense
bluntlobe cliff fern Woodsia obtusa
bluntlobe grapefern Botrychium oneidense
bog white violet Viola lanceolata
bog yellowcress Rorippa palustris
bottlebrush sedge Carex hystericina
Bowman's root Gillenia trifoliata
bride's feathers Aruncus dioicus
bristly greenbrier Smilax tamnoides
bristly sarsaparilla Aralia hispida
brittle bladderfern Cystopteris fragilis
broad beechfern Phegopteris hexagonoptera
broad looseflower sedge Carex laxiflora
broadleaf sedge Carex platyphylla
brome-like sedge Carex bromoides
brown widelip orchid Liparis liliifolia
browneyed Susan Rudbeckia triloba
buffalo clover Trifolium reflexum
bulblet bladderfern Cystopteris bulbifera
buttonbush dodder Cuscuta cephalanthi
Buxbaum's sedge Carex buxbaumii
Canada lettuce Lactuca canadensis
Canada lily Lilium canadense
Canada mayflower Maianthemum canadense
Canada toadflax Nuttallanthus canadensis
Canadian anemone Anemone canadensis
Canadian blacksnakeroot Sanicula canadensis
Canadian burnet Sanguisorba canadensis
Canadian clearweed Pilea pumila
Canadian honewort Cryptotaenia canadensis
Canadian summer bluet Houstonia canadensis
Canadian white violet Viola canadensis
Canadian wildginger Asarum canadense
Canadian woodnettle Laportea canadensis
carelessweed Cyclachaena xanthiifolia
Carey's sedge Carex careyana
Carolina bugbane Trautvetteria caroliniensis
Carolina geranium Geranium carolinianum
Carolina horsenettle Solanum carolinense
Carolina poplar Populus ×canadensis
Carolina sedge Carex caroliniana
Carolina springbeauty Claytonia caroliniana
Carolina vetch Vicia caroliniana
carpenter's square Scrophularia marilandica
cheerful sunflower Helianthus ×laetiflorus
chinquapin Castanea pumila
Christmas fern Polystichum acrostichoides
churchmouse threeawn Aristida dichotoma
clammy groundcherry Physalis heterophylla
clammy hedgehyssop Gratiola neglecta
clasping Venus' looking-glass Triodanis perfoliata
Clayton's sweetroot Osmorhiza claytonii
climbing false buckwheat Polygonum scandens
climbing milkvine Matelea obliqua
Clinton's woodfern Dryopteris clintoniana
clubmoss Lycopodium ×habereri
clustered blacksnakeroot Sanicula odorata
clustered fescue Festuca paradoxa
Columbian watermeal Wolffia columbiana
common boneset Eupatorium perfoliatum
common cinquefoil Potentilla simplex
common dittany Cunila origanoides
common marsh bedstraw Galium palustre
common milkweed Asclepias syriaca
common moonseed Menispermum canadense
common pricklyash Zanthoxylum americanum
common threeseed mercury Acalypha rhomboidea
common woodrush Luzula multiflora
common yellow oxalis Oxalis stricta
compassplant Silphium laciniatum
Copenhagen hawthorn Crataegus intricata
cornel-leaf whitetop Doellingeria infirma
cream avens Geum virginianum
crinkleroot Cardamine diphylla
Culver's root Veronicastrum virginicum
curlytop knotweed Polygonum lapathifolium
cutleaf evening primrose Oenothera laciniata
cutleaf grapefern Botrychium dissectum
cutleaf toothwort Cardamine concatenata
cypress panicgrass Dichanthelium dichotomum
deeproot clubmoss Lycopodium tristachyum
densetuft hairsedge Bulbostylis capillaris
devil's-tongue Opuntia humifusa
dogtooth violet Erythronium americanum
dotted hawthorn Crataegus punctata
downy pagoda-plant Blephilia ciliata
downy rattlesnake plantain Goodyera pubescens
downy yellow false foxglove Aureolaria virginica
Drummond's aster Symphyotrichum drummondii
Dudley's rush Juncus dudleyi
dutchman's breeches Dicentra cucullaria
dwarf chinquapin oak Quercus prinoides
dwarf cinquefoil Potentilla canadensis
dwarf crested iris Iris cristata
dwarf ginseng Panax trifolius
dwarf hackberry Celtis pumila
dwarf hawthorn Crataegus uniflora
dwarf larkspur Delphinium tricorne
early azalea Rhododendron prinophyllum
early blue violet Viola ×palmata
early bluegrass Poa cuspidata
early goldenrod Solidago juncea
early meadow-rue Thalictrum dioicum
early saxifrage Saxifraga virginiensis
earlyleaf brome Bromus latiglumis
earth loosestrife Lysimachia terrestris
eastern bottlebrush grass Elymus hystrix
eastern featherbells Stenanthium gramineum
eastern greenviolet Hybanthus concolor
eastern hayscented fern Dennstaedtia punctilobula
eastern leatherwood Dirca palustris
eastern marsh fern Thelypteris palustris
eastern poison ivy Toxicodendron radicans
eastern smooth beardtongue Penstemon laevigatus
eastern star sedge Carex radiata
eastern swamp saxifrage Saxifraga pensylvanica
eastern sweetshrub Calycanthus floridus
eastern waterleaf Hydrophyllum virginianum
ebony spleenwort Asplenium platyneuron
elmleaf goldenrod Solidago ulmifolia
Emory's sedge Carex emoryi
erect knotweed Polygonum erectum
evening campion Silene nivea
eyebane Chamaesyce nutans
fairywand Chamaelirium luteum
fall phlox Phlox paniculata
false boneset Brickellia eupatorioides
false Indian plantain Hasteola suaveolens
false mermaidweed Floerkea proserpinacoides
fan clubmoss Lycopodium digitatum
feathery false lily of the valley Maianthemum racemosum
fernleaf yellow false foxglove Aureolaria pedicularia
fescue sedge Carex festucacea
feverwort Triosteum perfoliatum
fibrousroot sedge Carex communis
field pansy Viola bicolor
field thistle Cirsium discolor
fire pink Silene virginica
fiveangled dodder Cuscuta pentagona
flat-top goldentop Euthamia graminifolia
fleshy hawthorn Crataegus succulenta
floating mannagrass Glyceria septentrionalis
floating primrose-willow Ludwigia peploides
flowering spurge Euphorbia corollata
fluxweed Trichostema brachiatum
forked bluecurls Trichostema dichotomum
fourleaf milkweed Asclepias quadrifolia
fourleaf yam Dioscorea quaternata
fox grape Vitis labrusca
fragrant bedstraw Galium triflorum
fragrant sumac Rhus aromatica
fringed loosestrife Lysimachia ciliata
fringed willowherb Epilobium ciliatum
fuzzy wuzzy sedge Carex hirsutella
Gattinger's panicgrass Panicum gattingeri
giant ironweed Vernonia gigantea
giant sunflower Helianthus giganteus
glade fern Diplazium pycnocarpon
globe flatsedge Cyperus echinatus
glomerate sedge Carex aggregata
golden zizia Zizia aurea
goldenseal Hydrastis canadensis
Goldie's woodfern Dryopteris goldieana
grassy arrowhead Sagittaria graminea
great blue lobelia Lobelia siphilitica
great Indian plantain Arnoglossum reniforme
Great Plains flatsedge Cyperus lupulinus
great ragweed Ambrosia trifida
great waterleaf Hydrophyllum appendiculatum
great yellow woodsorrel Oxalis grandis
greater fringed gentian Gentianopsis crinita
greater water dock Rumex orbiculatus
Greek valerian Polemonium reptans
green carpetweed Mollugo verticillata
green comet milkweed Asclepias viridiflora
green dragon Arisaema dracontium
green false hellebore Veratrum viride
green fringed orchid Platanthera lacera
grove bluegrass Poa alsodes
hairy angelica Angelica venenosa
hairy beardtongue Penstemon hirsutus
hairy bedstraw Galium pilosum
hairy forked nailwort Paronychia fastigiata
hairy lipfern Cheilanthes lanosa
hairy pagoda-plant Blephilia hirsuta
hairy skullcap Scutellaria elliptica
hairy small-leaf ticktrefoil Desmodium ciliare
hairy Solomon's seal Polygonatum pubescens
hairy sunflower Helianthus hirsutus
hairy wildrye Elymus villosus
hairy woodland brome Bromus pubescens
hairy woodrush Luzula acuminata
hairyjoint meadowparsnip Thaspium barbinode
halberdleaf tearthumb Polygonum arifolium
harbinger of spring Erigenia bulbosa
harlequin blueflag Iris versicolor
hazel dodder Cuscuta coryli
heartleaf four o'clock Mirabilis nyctaginea
hedgehog woodrush Luzula echinata
hemlock rosette grass Dichanthelium sabulorum
Hitchcock's sedge Carex hitchcockiana
hoary frostweed Helianthemum bicknellii
hoary mountainmint Pycnanthemum incanum
hoary puccoon Lithospermum canescens
hoary skullcap Scutellaria incana
hoary ticktrefoil Desmodium canescens
hoary verbena Verbena stricta
horsetail Equisetum ×litorale
Howell's pussytoes Antennaria howellii
husk tomato Physalis pubescens
hybrid cattail Typha ×glauca
hybrid oak Quercus ×saulii
Illinois pinweed Lechea racemulosa
Illinois pondweed Potamogeton illinoensis
Indian cucumber Medeola virginiana
Indian-tobacco Lobelia inflata
Indianpipe Monotropa uniflora
inflated narrow-leaf sedge Carex grisea
intermediate woodfern Dryopteris intermedia
James' sedge Carex jamesii
jumpseed Polygonum virginianum
king of the meadow Thalictrum pubescens
lace grass Eragrostis capillaris
lanceleaf figwort Scrophularia lanceolata
lanceleaf wild licorice Galium lanceolatum
large whorled pogonia Isotria verticillata
largebract ticktrefoil Desmodium cuspidatum
largebracted plantain Plantago aristata
largeflower bellwort Uvularia grandiflora
largefruit blacksnakeroot Sanicula trifoliata
lateflowering thoroughwort Eupatorium serotinum
leafy bulrush Scirpus polyphyllus
leathery grapefern Botrychium multifidum
lesser purple fringed orchid Platanthera psycodes
lesser roundleaved orchid Platanthera orbiculata
lesser yellow lady's slipper Cypripedium parviflorum
limber honeysuckle Lonicera dioica
little evening primrose Oenothera perennis
lizard's tail Saururus cernuus
longbeak arrowhead Sagittaria australis
longbranch frostweed Helianthemum canadense
longleaf groundcherry Physalis longifolia
longleaf summer bluet Houstonia longifolia
longspur violet Viola rostrata
longstyle sweetroot Osmorhiza longistylis
low false bindweed Calystegia spithamaea
low serviceberry Amelanchier humilis
low spikesedge Kyllinga pumila
lowland bladderfern Cystopteris protrusa
Lowrie's blue wood aster Symphyotrichum lowrieanum
lyrate rockcress Arabis lyrata
Macoun's cudweed Pseudognaphalium macounii
maidenhair spleenwort Asplenium trichomanes
man of the earth Ipomoea pandurata
marginal woodfern Dryopteris marginalis
marsh blue violet Viola cucullata
marsh skullcap Scutellaria galericulata
Maryland sanicle Sanicula marilandica
mat sandbur Cenchrus longispinus
matricary grapefern Botrychium matricariifolium
mayapple Podophyllum peltatum
meadow garlic Allium canadense
meadow spikemoss Selaginella apoda
meadow zizia Zizia aptera
Miami mist Phacelia purshii
midland sedge Carex mesochorea
moccasin flower Cypripedium acaule
mosquito bulrush Scirpus hattorianus
mountain holly Ilex montana
Muhlenberg's sedge Carex muehlenbergii
nakedflower ticktrefoil Desmodium nudiflorum
narrowleaf mountainmint Pycnanthemum tenuifolium
navel cornsalad Valerianella umbilicata
neckweed Veronica peregrina
needletip blue-eyed grass Sisyrinchium mucronatum
New England aster Symphyotrichum novae-angliae
nits and lice Hypericum drummondii
nodding chickweed Cerastium nutans
nodding evening primrose Oenothera nutans
nodding onion Allium cernuum
nodding sedge Carex gynandra
nodding wakerobin Trillium flexipes
northern dewberry Rubus flagellaris
northern evening primrose Oenothera parviflora
northern slender lady's tresses Spiranthes lacera
northern sweetgrass Hierochloe hirta
northern water plantain Alisma triviale
Norwegian cinquefoil Potentilla norvegica
obedient plant Physostegia virginiana
one-cone clubmoss Lycopodium lagopus
oneflowered broomrape Orobanche uniflora
oneseed bur cucumber Sicyos angulatus
orange coneflower Rudbeckia fulgida
orangefruit horse-gentian Triosteum aurantiacum
painted trillium Trillium undulatum
pale dock Rumex altissimus
pale Indian plantain Arnoglossum atriplicifolium
pale St. Johnswort Hypericum ellipticum
palegreen orchid Platanthera flava
paleleaf woodland sunflower Helianthus strumosus
palespike lobelia Lobelia spicata
parasol sedge Carex umbellata
parasol whitetop Doellingeria umbellata
Parlin's pussytoes Antennaria parlinii
pasture thistle Cirsium pumilum
Pennsylvania clubmoss Lycopodium hickeyi
Pennsylvania pellitory Parietaria pensylvanica
Pennsylvania sedge Carex pensylvanica
perfoliate bellwort Uvularia perfoliata
Philadelphia panicgrass Panicum philadelphicum
pinesap Monotropa hypopitys
pipevine Aristolochia macrophylla
pitseed goosefoot Chenopodium berlandieri
plantainleaf sedge Carex plantaginea
pointedleaf ticktrefoil Desmodium glutinosum
poison sumac Toxicodendron vernix
poke milkweed Asclepias exaltata
poorjoe Diodia teres
poverty dropseed Sporobolus vaginiflorus
poverty oatgrass Danthonia spicata
prairie threeawn Aristida oligantha
prostrate ticktrefoil Desmodium rotundifolium
pubescent sedge Carex hirtifolia
puffsheath dropseed Sporobolus neglectus
purple bergamot Monarda media
purple fringeless orchid Platanthera peramoena
purple meadowparsnip Thaspium trifoliatum
purple milkweed Asclepias purpurascens
purple milkwort Polygala sanguinea
purplerocket Iodanthus pinnatifidus
purplestem angelica Angelica atropurpurea
queen of the prairie Filipendula rubra
rabbit-tobacco Pseudognaphalium obtusifolium
ram's horn Proboscidea louisianica
ramp Allium tricoccum
rare clubmoss Lycopodium obscurum
rattlesnakeweed Hieracium venosum
red columbine Aquilegia canadensis
red hickory Carya ovalis
red trillium Trillium erectum
redwhisker clammyweed Polanisia dodecandra
reflexed sedge Carex retroflexa
ribbed sedge Carex virescens
richweed Collinsonia canadensis
richwoods sedge Carex oligocarpa
robin's plantain Erigeron pulchellus
rock harlequin Corydalis sempervirens
rock muhly Muhlenbergia sobolifera
rock polypody Polypodium virginianum
rosepink Sabatia angularis
rosy sedge Carex rosea
rough barnyardgrass Echinochloa muricata
rough hawkweed Hieracium scabrum
roundleaf ragwort Packera obovata
roundseed St. Johnswort Hypericum sphaerocarpum
rue anemone Thalictrum thalictroides
running clubmoss Lycopodium clavatum
running serviceberry Amelanchier stolonifera
sand bittercress Cardamine parviflora
sand violet Viola affinis
sandbar lovegrass Eragrostis frankii
scaldweed Cuscuta gronovii
scarlet beebalm Monarda didyma
scarlet hawthorn Crataegus pedicellata
Schreber's aster Eurybia schreberi
seedbox Ludwigia alternifolia
sensitive fern Onoclea sensibilis
sensitive partridge pea Chamaecrista nictitans
sessilefruit arrowhead Sagittaria rigida
sessileleaf bellwort Uvularia sessilifolia
shaved sedge Carex tonsa
shining clubmoss Huperzia lucidula
shiny wedgescale Sphenopholis nitida
Short's aster Symphyotrichum shortii
Short's rockcress Arabis shortii
shortbeak sedge Carex brevior
showy orchid Galearis spectabilis
showy ticktrefoil Desmodium canadense
shrubby lespedeza Lespedeza frutescens
sicklepod Arabis canadensis
silky dogwood Cornus obliqua
silver false spleenwort Deparia acrostichoides
sixweeks fescue Vulpia octoflora
skullcap speedwell Veronica scutellata
sleepy silene Silene antirrhina
slender fimbry Fimbristylis autumnalis
slender lespedeza Lespedeza virginica
slender looseflower sedge Carex gracilescens
slender toothwort Cardamine angustata
slender wedgescale Sphenopholis intermedia
slender woodland sedge Carex digitalis
slender yellow woodsorrel Oxalis dillenii
slenderleaf false foxglove Agalinis tenuifolia
slim amaranth Amaranthus hybridus
slimflower muhly Muhlenbergia tenuiflora
slimleaf panicgrass Dichanthelium linearifolium
small skullcap Scutellaria parvula
small woodland sunflower Helianthus microcephalus
smooth carrionflower Smilax herbacea
smooth forked nailwort Paronychia canadensis
smooth oxeye Heliopsis helianthoides
smooth rock skullcap Scutellaria saxatilis
smooth rockcress Arabis laevigata
smooth rose Rosa blanda
smooth Solomon's seal Polygonatum biflorum
smooth yellow false foxglove Aureolaria flava
smoothsheath sedge Carex laevivaginata
snow trillium Trillium nivale
soft agrimony Agrimonia pubescens
southern woodland violet Viola hirsutula
Spanish needles Bidens bipinnata
spinulose woodfern Dryopteris carthusiana
spiral pondweed Potamogeton spirillus
spoonleaf purple everlasting Gamochaeta purpurea
spotted beebalm Monarda punctata
spotted geranium Geranium maculatum
spotted sandmat Chamaesyce maculata
spotted water hemlock Cicuta maculata
spreading chervil Chaerophyllum procumbens
spreading dogbane Apocynum androsaemifolium
spreading sedge Carex laxiculmis
spring blue eyed Mary Collinsia verna
spring coralroot Corallorhiza wisteriana
spring forget-me-not Myosotis verna
squirrel corn Dicentra canadensis
Standley's goosefoot Chenopodium standleyanum
star chickweed Stellaria pubera
starved panicgrass Dichanthelium depauperatum
sticky catchfly Silene caroliniana
stiff cowbane Oxypolis rigidior
stout goldenrod Solidago squarrosa
striped cream violet Viola striata
striped prince's pine Chimaphila maculata
summer coralroot Corallorhiza maculata
swamp lousewort Pedicularis lanceolata
swamp thistle Cirsium muticum
swamp verbena Verbena hastata
Swan's sedge Carex swanii
sweet white violet Viola blanda
sweetscented joe pye weed Eutrochium purpureum
tall blue lettuce Lactuca biennis
tall rattlesnakeroot Prenanthes altissima
tall thimbleweed Anemone virginiana
tall thistle Cirsium altissimum
tall thoroughwort Eupatorium altissimum
tall tickseed Coreopsis tripteris
tapered rosette grass Dichanthelium acuminatum
terrestrial water-starwort Callitriche terrestris
thinleaf late purple aster Symphyotrichum phlogifolium
thinleaf sunflower Helianthus decapetalus
thymeleaf pinweed Lechea minor
tinted woodland spurge Euphorbia commutata
toadshade Trillium sessile
toothed whitetop aster Sericocarpus asteroides
tower rockcress Arabis glabra
trailing arbutus Epigaea repens
trailing lespedeza Lespedeza procumbens
tree groundpine Lycopodium dendroideum
tufted lovegrass Eragrostis pectinacea
turion duckweed Lemna turionifera
turk's-cap lily Lilium superbum
turkey corn Dicentra eximia
twinleaf Jeffersonia diphylla
twoflower dwarfdandelion Krigia biflora
twoleaf miterwort Mitella diphylla
upland boneset Eupatorium sessilifolium
upland brittle bladderfern Cystopteris tenuis
vasevine Clematis viorna
veiny skullcap Scutellaria nervosa
Viola ×primulifolia Viola ×primulifolia
violet lespedeza Lespedeza violacea
violet woodsorrel Oxalis violacea
Virginia bunchflower Veratrum virginicum
Virginia mountainmint Pycnanthemum virginianum
Virginia pennywort Obolaria virginica
Virginia pepperweed Lepidium virginicum
Virginia plantain Plantago virginica
Virginia snakeroot Aristolochia serpentaria
Virginia springbeauty Claytonia virginica
Virginia strawberry Fragaria virginiana
Virginia tephrosia Tephrosia virginiana
walking fern Asplenium rhizophyllum
waterplantain spearwort Ranunculus ambigens
wavyleaf aster Symphyotrichum undulatum
waxflower shinleaf Pyrola elliptica
waxyfruit hawthorn Crataegus pruinosa
waxyleaf meadow-rue Thalictrum revolutum
western oakfern Gymnocarpium dryopteris
western waterweed Elodea nuttallii
whip-poor-will flower Trillium cernuum
white arrowleaf aster Symphyotrichum urophyllum
white baneberry Actaea pachypoda
white bear sedge Carex albursina
white bergamot Monarda clinopodia
white blue-eyed grass Sisyrinchium albidum
white fawnlily Erythronium albidum
white goldenrod Solidago bicolor
white rattlesnakeroot Prenanthes alba
white snakeroot Ageratina altissima
white trillium Trillium grandiflorum
white turtlehead Chelone glabra
white vervain Verbena urticifolia
white wood aster Eurybia divaricata
whiteflower leafcup Polymnia canadensis
whitestar Ipomoea lacunosa
whitetinge sedge Carex albicans
whorled milkwort Polygala ambigua
whorled milkwort Polygala verticillata
whorled mountainmint Pycnanthemum verticillatum
whorled rosinweed Silphium trifoliatum
whorled yellow loosestrife Lysimachia quadrifolia
widowsfrill Silene stellata
wild comfrey Cynoglossum virginianum
wild cucumber Echinocystis lobata
wild hydrangea Hydrangea arborescens
wild yam Dioscorea villosa
Willdenow's sedge Carex willdenowii
willowleaf aster Symphyotrichum praealtum
winged lythrum Lythrum alatum
wingstem Verbesina alternifolia
witchgrass Panicum capillare
woman's tobacco Antennaria plantaginifolia
wood anemone Anemone quinquefolia
woodfern Dryopteris ×boottii
woodfern Dryopteris ×slossoniae
woodfern Dryopteris ×triploidea
woodfern Dryopteris ×uliginosa
woodland flax Linum virginianum
woodland lettuce Lactuca floridana
woodland stonecrop Sedum ternatum
woodland strawberry Fragaria vesca
woodland sunflower Helianthus divaricatus
wormseed sandmat Chamaesyce vermiculata
yellow nodding lady's tresses Spiranthes ochroleuca
yellow pimpernel Taenidia integerrima
yellow screwstem Bartonia virginica
yellow water buttercup Ranunculus flabellaris
yellowfruit sedge Carex annectens
yellowseed false pimpernel Lindernia dubia

Also listed as native and introduced here 4

PLANTS labels these species both native and introduced in this state: some forms are native and others were brought in from elsewhere. Most gardeners should choose plants from the main list.

annual ragweedAmbrosia artemisiifolia
common reedPhragmites australis
hedge false bindweedCalystegia sepium
Kentucky bluegrassPoa pratensis

Compared with Pennsylvania

The typical county is the median of the 67 Pennsylvania counties with PLANTS county records; the statewide figure counts every species native anywhere in the state. More species is not better or worse: counties differ in size, habitat and how thoroughly they have been surveyed.

Native species counts, Allegheny County and Pennsylvania
Measure	Allegheny County	Typical county	Statewide
Native species	997	763	1,854
Garden-ready natives	402	331	634
Tree	122	—	173
Shrub	56	—	117
Wildflower (forb)	545	—	972
Grass or grass-like	180	—	432
Vine	42	—	64
Fern	52	—	96

Neighboring counties

Counties that share a ZIP code with Allegheny County.

Beaver County, PA 349 garden-ready
Butler County, PA 365 garden-ready
Washington County, PA 270 garden-ready
Westmoreland County, PA 372 garden-ready

Source & data date

Source: USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).; Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.; USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
Citation: USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.; Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
Data date: Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
Zones: USDA Plant Hardiness Zone Map (2023) ZIP table: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 3, 2026. Plant zones on this site are our estimate, not the official map.
Scope: Allegheny County (county FIPS 42003), Pennsylvania. 997 native species from PLANTS county distribution records; garden-ready = species with a PLANTS characteristics record.
Method: A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources

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