Native plants · Maine

Native plants of Knox County

715 plant species are recorded as native to Maine in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Knox County by USDA PLANTS. 320 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 6 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Knox County, Maine

Native species: 715 Typical Maine county: 681 (median of 16 counties)
Garden-ready natives: 320 Typical Maine county: 303
Share by type (all 715 native species): Percent of the 715 native species in each growth type

Tree 11% (78)
Shrub 9% (63)
Wildflower (forb) 50% (360)
Grass or grass-like 22% (156)
Vine 3% (21)
Fern 5% (37)

Wildflowers make up the largest share of the native list (50%), followed by grasses and grass-like plants (22%).

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 5b to 7a (2023 map).

The native plant list

Garden-ready natives 320

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

Garden-ready native plants of Knox County, Maine
Plant	Type	Height	Light	Water use	Hardy to
alderleaf buckthorn Rhamnus alnifolia	Shrub	3 ft	Shade-tolerant	High	Zone 4a
alkali buttercup Ranunculus cymbalaria	Wildflower (forb)	1 ft	Shade-tolerant	High	Zone 3b
Allegheny blackberry Rubus allegheniensis	Shrub	6 ft	Shade-tolerant	Medium	Zone 4b
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 beachgrass Ammophila breviligulata	Grass or grass-like	2.5 ft	Sun	Medium	Zone 4b
American beech Fagus grandifolia	Tree	80 ft	Shade-tolerant	Medium	Zone 3a
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 dunegrass Leymus mollis	Grass or grass-like	4 ft	Sun	Medium	Zone 8a
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 hornbeam Carpinus caroliniana	Tree	30 ft	Shade-tolerant	Medium	Zone 4a
American mountain ash Sorbus americana	Tree	40 ft	Sun–part shade	Medium	Zone 3b
American speedwell Veronica americana	Wildflower (forb)	10 in	Shade-tolerant	High	Zone 3b
American water horehound Lycopus americanus	Wildflower (forb)	1.8 ft	Shade-tolerant	High	Zone 3b
American witchhazel Hamamelis virginiana	Tree	20 ft	Sun–part shade	Medium	Zone 4b
arborvitae Thuja occidentalis	Tree	50 ft	Sun–part shade	Medium	Zone 4a
arctic sweet coltsfoot Petasites frigidus	Wildflower (forb)	10 in	Sun–part shade	High	Zone 3b
arrowleaf tearthumb Polygonum sagittatum	Vine	1 ft	Sun	Medium	Zone 6a
Atlantic mannagrass Glyceria obtusa	Grass or grass-like	3.3 ft	Shade-tolerant	High	Zone 6b
Atlantic white cedar Chamaecyparis thyoides	Tree	50 ft	Sun–part shade	Low	Zone 3b
awlfruit sedge Carex stipata	Grass or grass-like	3.5 ft	Shade-tolerant	Medium	Zone 3b
balsam fir Abies balsamea	Tree	60 ft	Shade-tolerant	Medium	Zone 3a
balsam poplar Populus balsamifera	Tree	80 ft	Sun	High	Zone 1a
beach pea Lathyrus japonicus	Vine	1.5 ft	Sun–part shade	Medium	Zone 4a
beach plum Prunus maritima	Shrub	12 ft	Sun	Medium	Zone 4a
beaked hazelnut Corylus cornuta	Tree	15 ft	Shade-tolerant	Medium	Zone 2b
Bebb's sedge Carex bebbii	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 3b
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
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 spruce Picea mariana	Tree	65 ft	Shade-tolerant	High	Zone 1a
blackeyed Susan Rudbeckia hirta	Wildflower (forb)	1 ft	Sun	Medium	Zone 5a
blister sedge Carex vesicaria	Grass or grass-like	3 ft	Sun–part shade	High	Zone 3b
bluebead Clintonia borealis	Wildflower (forb)	1.1 ft	Sun	Medium	Zone 4a
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
bog goldenrod Solidago uliginosa	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 5a
bog Labrador tea Ledum groenlandicum	Shrub	3 ft	Sun–part shade	Medium	Zone 4a
bog laurel Kalmia polifolia	Shrub	1 ft	Shade-tolerant	Medium	Zone 4b
bog muhly Muhlenbergia uniflora	Grass or grass-like	1.2 ft	Sun	High	Zone 4a
bog willowherb Epilobium leptophyllum	Wildflower (forb)	3.6 ft	Sun–part shade	High	Zone 4a
boxelder Acer negundo	Tree	60 ft	Shade-tolerant	Medium	Zone 2b
bristly dewberry Rubus hispidus	Shrub	2 ft	Sun	High	Zone 3b
bristlystalked sedge Carex leptalea	Grass or grass-like	1.5 ft	Shade-tolerant	High	Zone 4a
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
broom sedge Carex scoparia	Grass or grass-like	2.5 ft	Shade-tolerant	High	Zone 3b
buckbean Menyanthes trifoliata	Wildflower (forb)	10 in	Sun–part shade	High	Zone 4a
bunchberry dogwood Cornus canadensis	Shrub	6 in	Shade-tolerant	High	Zone 4b
bur oak Quercus macrocarpa	Tree	100 ft	Sun–part shade	Medium	Zone 3b
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 canadensis	Wildflower (forb)	3.5 ft	Sun	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 plum Prunus nigra	Tree	9 ft	Sun	—	Zone 9b
Canadian rush Juncus canadensis	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 4a
Canadian serviceberry Amelanchier canadensis	Tree	23 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
chokecherry Prunus virginiana	Tree	25 ft	Sun	Medium	Zone 3a
cinnamon fern Osmunda cinnamomea	Fern	4.9 ft	Shade-tolerant	Medium	Zone 4a
common blue violet Viola sororia	Wildflower (forb)	4 in	Sun–part shade	High	Zone 4b
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 juniper Juniperus communis	Tree	10 ft	Sun	Low	Zone 3a
common ninebark Physocarpus opulifolius	Shrub	10 ft	Sun	Low	Zone 4a
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 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
coon's tail Ceratophyllum demersum	Wildflower (forb)	—	Sun–part shade	High	Zone 3b
cosmopolitan bulrush Bolboschoenus maritimus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 5a
creeping snowberry Gaultheria hispidula	Shrub	6 in	Shade-tolerant	Medium	Zone 4b
crested woodfern Dryopteris cristata	Fern	1.6 ft	Shade-tolerant	High	Zone 4a
cutleaf coneflower Rudbeckia laciniata	Wildflower (forb)	8.2 ft	Shade-tolerant	Low	Zone 3b
deertongue Dichanthelium clandestinum	Grass or grass-like	2 ft	Sun	Low	Zone 4a
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
Dewey sedge Carex deweyana	Grass or grass-like	3.8 ft	Shade-tolerant	Medium	Zone 4a
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 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
drooping woodreed Cinna latifolia	Grass or grass-like	4.5 ft	Sun–part shade	High	Zone 3b
Drummond's rockcress Arabis drummondii	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
dwarf bilberry Vaccinium cespitosum	Shrub	1 ft	Shade-tolerant	High	Zone 4a
dwarf spikerush Eleocharis parvula	Grass or grass-like	1.2 ft	Sun	Medium	Zone 3b
dwarf St. Johnswort Hypericum mutilum	Wildflower (forb)	2.6 ft	Sun–part shade	Medium	Zone 5a
eastern hemlock Tsuga canadensis	Tree	105 ft	Shade-tolerant	Medium	Zone 4a
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
field horsetail Equisetum arvense	Fern	11 in	Sun–part shade	High	Zone 3a
field pussytoes Antennaria neglecta	Wildflower (forb)	1 ft	Sun	Low	Zone 3b
fireweed Chamerion angustifolium	Wildflower (forb)	5.5 ft	Sun–part shade	High	Zone 3b
flattened oatgrass Danthonia compressa	Grass or grass-like	2.4 ft	Shade-tolerant	Medium	Zone 4a
floating pondweed Potamogeton natans	Wildflower (forb)	—	Sun	High	Zone 3b
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
fringed brome Bromus ciliatus	Grass or grass-like	4 ft	Shade-tolerant	Medium	Zone 7a
fringed sedge Carex crinita	Grass or grass-like	5.2 ft	Sun–part shade	Medium	Zone 4a
giant goldenrod Solidago gigantea	Wildflower (forb)	8.2 ft	Sun–part shade	Medium	Zone 4a
golden sedge Carex aurea	Grass or grass-like	1.2 ft	Sun–part shade	High	Zone 4a
graceful sedge Carex gracillima	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 4a
gray alder Alnus incana	Tree	25 ft	Sun–part shade	High	Zone 4a
gray birch Betula populifolia	Tree	25 ft	Sun–part shade	Low	Zone 3b
gray dogwood Cornus racemosa	Shrub	10 ft	Shade-tolerant	Medium	Zone 2b
gray goldenrod Solidago nemoralis	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
greater bladder sedge Carex intumescens	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
greater creeping spearwort Ranunculus flammula	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4a
green alder Alnus viridis	Tree	10 ft	Sun–part shade	High	Zone 1a
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 sedge Carex lacustris	Grass or grass-like	5 ft	Shade-tolerant	High	Zone 4b
hardstem bulrush Schoenoplectus acutus	Grass or grass-like	9.8 ft	Sun	High	Zone 3b
hazel alder Alnus serrulata	Tree	30 ft	Sun	High	Zone 5a
highbush blueberry Vaccinium corymbosum	Shrub	12 ft	Shade-tolerant	Medium	Zone 4a
hobblebush Viburnum lantanoides	Shrub	10 ft	Shade-tolerant	Medium	Zone 3b
honeylocust Gleditsia triacanthos	Tree	70 ft	Sun	Medium	Zone 3b
hooded lady's tresses Spiranthes romanzoffiana	Wildflower (forb)	2.5 ft	Sun–part shade	High	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
Indianhemp Apocynum cannabinum	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 3a
inkberry Ilex glabra	Shrub	8 ft	Sun	High	Zone 6a
inland sedge Carex interior	Grass or grass-like	1.5 ft	Sun–part shade	High	Zone 3b
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
jointleaf rush Juncus articulatus	Grass or grass-like	2 ft	Sun–part shade	High	Zone 4b
kinnikinnick Arctostaphylos uva-ursi	Shrub	6 in	Sun–part shade	Low	Zone 4a
lakeshore sedge Carex lenticularis	Grass or grass-like	1.6 ft	Sun–part shade	High	Zone 3b
lavender thrift Limonium carolinianum	Wildflower (forb)	2 ft	Sun	High	Zone 6b
leafy pondweed Potamogeton foliosus	Wildflower (forb)	—	Sun	High	Zone 3b
leatherleaf Chamaedaphne calyculata	Shrub	4 ft	Sun–part shade	High	Zone 4b
lesser panicled sedge Carex diandra	Grass or grass-like	3 ft	Sun–part shade	High	Zone 4a
limestone meadow sedge Carex granularis	Grass or grass-like	2.5 ft	Shade-tolerant	High	Zone 4a
lingonberry Vaccinium vitis-idaea	Shrub	6 in	Sun	—	Zone 1a
little green sedge Carex viridula	Grass or grass-like	1.5 ft	Sun	High	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
lowbush blueberry Vaccinium angustifolium	Shrub	2 ft	Sun	Medium	Zone 4a
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
melic mannagrass Glyceria melicaria	Grass or grass-like	3.9 ft	Sun	Medium	Zone 4a
Mexican muhly Muhlenbergia mexicana	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4a
Missouri River willow Salix eriocephala	Tree	52 ft	Shade-tolerant	High	Zone 3b
moss phlox Phlox subulata	Wildflower (forb)	6 in	Sun–part shade	High	Zone 4b
mountain maple Acer spicatum	Tree	25 ft	Shade-tolerant	Medium	Zone 2b
mud sedge Carex limosa	Grass or grass-like	1.8 ft	Sun	Medium	Zone 4a
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
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 York aster Symphyotrichum novi-belgii	Wildflower (forb)	6 ft	Sun	High	Zone 4a
New York fern Thelypteris noveboracensis	Fern	1.5 ft	Shade-tolerant	Low	Zone 4b
nodding beggartick Bidens cernua	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
nodding lady's tresses Spiranthes cernua	Wildflower (forb)	1.5 ft	Sun	High	Zone 3b
nodding waternymph Najas flexilis	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 12a
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 mountain ash Sorbus decora	Tree	40 ft	Shade-tolerant	Low	Zone 2a
northern red oak Quercus rubra	Tree	81 ft	Sun–part shade	Medium	Zone 3b
northern St. Johnswort Hypericum boreale	Wildflower (forb)	10 in	Sun–part shade	High	Zone 4a
Northwest Territory sedge Carex utriculata	Grass or grass-like	3.5 ft	Sun	High	Zone 3a
orangegrass Hypericum gentianoides	Wildflower (forb)	2 ft	Sun–part shade	Low	Zone 12a
panicled bulrush Scirpus microcarpus	Grass or grass-like	5.5 ft	Sun	Medium	Zone 3b
paper birch Betula papyrifera	Tree	70 ft	Sun	High	Zone 1a
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
Philadelphia fleabane Erigeron philadelphicus	Wildflower (forb)	2.8 ft	Sun–part shade	Medium	Zone 4b
pickerelweed Pontederia cordata	Wildflower (forb)	3.2 ft	Sun	High	Zone 5a
pin cherry Prunus pensylvanica	Tree	30 ft	Sun	Medium	Zone 3b
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 willow Salix humilis	Shrub	10 ft	Sun–part shade	High	Zone 3a
prickly bog sedge Carex atlantica	Grass or grass-like	1.8 ft	Sun–part shade	High	Zone 5b
prickly currant Ribes lacustre	Shrub	3 ft	Shade-tolerant	—	Zone 1a
prickly rose Rosa acicularis	Shrub	4 ft	Shade-tolerant	High	Zone 3b
purpleflowering raspberry Rubus odoratus	Shrub	5 ft	Sun–part shade	Medium	Zone 3b
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
pussy willow Salix discolor	Tree	40 ft	Shade-tolerant	High	Zone 4a
quaking aspen Populus tremuloides	Tree	65 ft	Sun	High	Zone 1a
quill sedge Carex tenera	Grass or grass-like	2.5 ft	Shade-tolerant	Medium	Zone 4a
rattlesnake mannagrass Glyceria canadensis	Grass or grass-like	3.2 ft	Sun	Medium	Zone 4a
red currant Ribes triste	Shrub	2 ft	Shade-tolerant	Medium	Zone 1a
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 pine Pinus resinosa	Tree	80 ft	Sun	Low	Zone 3a
red spruce Picea rubens	Tree	110 ft	Shade-tolerant	Medium	Zone 2b
redosier dogwood Cornus sericea	Tree	12 ft	Sun	High	Zone 3b
reed canarygrass Phalaris arundinacea	Grass or grass-like	5 ft	Sun	High	Zone 3b
rhodora Rhododendron canadense	Shrub	18 ft	Shade-tolerant	High	Zone 5a
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
river bulrush Bolboschoenus fluviatilis	Grass or grass-like	6.6 ft	Sun	Medium	Zone 3b
riverbank grape Vitis riparia	Vine	45 ft	Sun–part shade	Medium	Zone 4a
roadside agrimony Agrimonia striata	Wildflower (forb)	6 ft	Shade-tolerant	Medium	Zone 3a
Robbins' pondweed Potamogeton robbinsii	Wildflower (forb)	—	Sun	High	Zone 3b
rough avens Geum laciniatum	Wildflower (forb)	3.1 ft	Sun–part shade	Medium	Zone 5a
rough bentgrass Agrostis scabra	Grass or grass-like	2.5 ft	Sun	Medium	Zone 3b
roundleaf dogwood Cornus rugosa	Tree	10 ft	Shade-tolerant	Low	Zone 4b
roundleaf serviceberry Amelanchier sanguinea	Tree	10 ft	Shade-tolerant	Medium	Zone 3a
saltgrass Distichlis spicata	Grass or grass-like	1.1 ft	Sun	Medium	Zone 3b
saltmeadow cordgrass Spartina patens	Grass or grass-like	2 ft	Sun	High	Zone 7a
sea milkwort Glaux maritima	Wildflower (forb)	11 in	Sun	High	Zone 4a
seaside goldenrod Solidago sempervirens	Wildflower (forb)	3.5 ft	Sun	Low	Zone 6a
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
shining willow Salix lucida	Tree	13 ft	Sun–part shade	High	Zone 3a
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
silverweed cinquefoil Argentina anserina	Wildflower (forb)	6 in	Shade-tolerant	High	Zone 5a
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 cottongrass Eriophorum gracile	Grass or grass-like	1.7 ft	Sun	High	Zone 3a
slender spikerush Eleocharis tenuis	Grass or grass-like	2.9 ft	Sun	Low	Zone 5a
slender wheatgrass Elymus trachycaulus	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
small enchanter's nightshade Circaea alpina	Wildflower (forb)	11 in	Shade-tolerant	Medium	Zone 3b
small floating mannagrass Glyceria borealis	Grass or grass-like	4.9 ft	Sun	High	Zone 4a
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 cordgrass Spartina alterniflora	Grass or grass-like	3.5 ft	Sun	High	Zone 5a
smooth sumac Rhus glabra	Tree	12 ft	Sun	Low	Zone 4a
softleaf sedge Carex disperma	Grass or grass-like	2 ft	Sun–part shade	High	Zone 3b
softstem bulrush Schoenoplectus tabernaemontani	Grass or grass-like	9 ft	Sun	High	Zone 3b
southern arrowwood Viburnum dentatum	Tree	8 ft	Sun–part shade	—	Zone 5a
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
staghorn sumac Rhus typhina	Tree	30 ft	Sun–part shade	Low	Zone 4a
star duckweed Lemna trisulca	Wildflower (forb)	4 in	Sun	High	Zone 3b
star sedge Carex echinata	Grass or grass-like	1.5 ft	Sun–part shade	High	Zone 3b
steeplebush Spiraea tomentosa	Shrub	4 ft	Sun	Low	Zone 4a
stiff clubmoss Lycopodium annotinum	Fern	1 ft	Shade-tolerant	High	Zone 3a
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
swamp loosestrife Decodon verticillatus	Shrub	8 ft	Sun–part shade	High	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
sweetgale Myrica gale	Shrub	6 ft	Shade-tolerant	Medium	Zone 4a
sweetgrass Hierochloe odorata	Grass or grass-like	2 ft	Sun–part shade	High	Zone 3b
tall cottongrass Eriophorum angustifolium	Grass or grass-like	2 ft	Sun	High	Zone 3a
tall hairy agrimony Agrimonia gryposepala	Wildflower (forb)	5.9 ft	Sun–part shade	Medium	Zone 3a
tamarack Larix laricina	Tree	80 ft	Sun	Medium	Zone 1a
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
three-way sedge Dulichium arundinaceum	Grass or grass-like	2.6 ft	Sun–part shade	High	Zone 3b
threelobe beggarticks Bidens tripartita	Wildflower (forb)	3.5 ft	Sun–part shade	High	Zone 12a
threepetal bedstraw Galium trifidum	Vine	10 in	Sun–part shade	High	Zone 3b
threeseeded sedge Carex trisperma	Grass or grass-like	1.9 ft	Shade-tolerant	High	Zone 4a
toad rush Juncus bufonius	Grass or grass-like	1 ft	Sun	Medium	Zone 12a
tufted bulrush Trichophorum cespitosum	Grass or grass-like	1.3 ft	Sun–part shade	Medium	Zone 3a
tufted hairgrass Deschampsia cespitosa	Grass or grass-like	3.4 ft	Sun	Low	Zone 3b
tufted loosestrife Lysimachia thyrsiflora	Wildflower (forb)	2 ft	Sun–part shade	High	Zone 4a
upland bentgrass Agrostis perennans	Grass or grass-like	3.5 ft	Sun–part shade	High	Zone 4a
upright sedge Carex stricta	Grass or grass-like	4.2 ft	Shade-tolerant	Medium	Zone 3b
variableleaf pondweed Potamogeton gramineus	Wildflower (forb)	—	Sun	High	Zone 3b
vernal water-starwort Callitriche palustris	Wildflower (forb)	10 in	Sun	Medium	Zone 4a
Virginia creeper Parthenocissus quinquefolia	Vine	1 ft	Sun–part shade	Low	Zone 4b
Virginia rose Rosa virginiana	Shrub	6 ft	Sun–part shade	Medium	Zone 5b
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
wavy hairgrass Deschampsia flexuosa	Grass or grass-like	2.6 ft	Shade-tolerant	Medium	Zone 3b
western pearly everlasting Anaphalis margaritacea	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 3a
wheat sedge Carex atherodes	Grass or grass-like	5 ft	Sun	High	Zone 3b
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 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
white sagebrush Artemisia ludoviciana	Wildflower (forb)	3 ft	Sun	Low	Zone 4a
white spruce Picea glauca	Tree	100 ft	Sun–part shade	Medium	Zone 1a
widgeongrass Ruppia maritima	Wildflower (forb)	2 in	Sun	High	Zone 7a
wild sarsaparilla Aralia nudicaulis	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 3b
woodland horsetail Equisetum sylvaticum	Fern	11 in	Shade-tolerant	Low	Zone 3a
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 birch Betula alleghaniensis	Tree	75 ft	Sun–part shade	Medium	Zone 2b
yellow marsh marigold Caltha palustris	Wildflower (forb)	2 ft	Sun	High	Zone 3b
zigzag goldenrod Solidago flexicaulis	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 5b

Other native species recorded here 395

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.

Allegheny hawkweed Hieracium paniculatum
Allegheny monkeyflower Mimulus ringens
allegheny vine Adlumia fungosa
alpine bulrush Trichophorum alpinum
alpine violet Viola labradorica
American burnweed Erechtites hieraciifolius
American dragonhead Dracocephalum parviflorum
American false pennyroyal Hedeoma pulegioides
American fly honeysuckle Lonicera canadensis
American golden saxifrage Chrysosplenium americanum
American hogpeanut Amphicarpaea bracteata
American mannagrass Glyceria grandis
American marshpennywort Hydrocotyle americana
American searocket Cakile edentula
American spikenard Aralia racemosa
American spurred gentian Halenia deflexa
American wintergreen Pyrola americana
annual seepweed Suaeda linearis
Apocynum ×floribundum Apocynum ×floribundum
Appalachian stitchwort Minuartia glabra
arrowleaf violet Viola sagittata
Atlantic goldenrod Solidago arguta
balm-of-Gilead Populus ×jackii
bastard toadflax Comandra umbellata
bay forget-me-not Myosotis laxa
bayonet rush Juncus militaris
Bebb willow Salix bebbiana
Beck's water-marigold Bidens beckii
beechdrops Epifagus virginiana
Bicknell's cranesbill Geranium bicknellii
bigfruit hawthorn Crataegus macrosperma
bigleaf lupine Lupinus polyphyllus
blackseed plantain Plantago rugelii
blite goosefoot Chenopodium capitatum
bloodroot Sanguinaria canadensis
bluntleaf pondweed Potamogeton obtusifolius
bluntleaf sandwort Moehringia lateriflora
bluntleaved orchid Platanthera obtusata
bog fern Thelypteris simulata
bog rosemary Andromeda polifolia
bog white violet Viola lanceolata
bog yellowcress Rorippa palustris
bog yelloweyed grass Xyris difformis
boreal bog sedge Carex magellanica
boreal starwort Stellaria borealis
bristly sarsaparilla Aralia hispida
brittle bladderfern Cystopteris fragilis
broad beechfern Phegopteris hexagonoptera
broad looseflower sedge Carex laxiflora
broadleaf sedge Carex platyphylla
brown beaksedge Rhynchospora fusca
brownfruit rush Juncus pelocarpus
brownish sedge Carex brunnescens
bulblet-bearing water hemlock Cicuta bulbifera
bushy knotweed Polygonum ramosissimum
Canada lettuce Lactuca canadensis
Canada lily Lilium canadense
Canada mayflower Maianthemum canadense
Canada toadflax Nuttallanthus canadensis
Canadian clearweed Pilea pumila
Canadian woodnettle Laportea canadensis
candle anemone Anemone cylindrica
carelessweed Cyclachaena xanthiifolia
Carey's smartweed Polygonum careyi
Carolina geranium Geranium carolinianum
Carolina springbeauty Claytonia caroliniana
catberry Ilex mucronata
cheerful sunflower Helianthus ×laetiflorus
Christmas fern Polystichum acrostichoides
clammy groundcherry Physalis heterophylla
claspingleaf pondweed Potamogeton perfoliatus
Clayton's sweetroot Osmorhiza claytonii
clustered sedge Carex cumulata
coastal jointweed Polygonella articulata
coastal sedge Carex exilis
common bladderwort Utricularia macrorhiza
common boneset Eupatorium perfoliatum
common cinquefoil Potentilla simplex
common marsh bedstraw Galium palustre
common milkweed Asclepias syriaca
common threeseed mercury Acalypha rhomboidea
common yellow oxalis Oxalis stricta
cranberry Vaccinium macrocarpon
Crawford's sedge Carex crawfordii
cuckoo flower Cardamine pratensis
curlytop knotweed Polygonum lapathifolium
cutleaf grapefern Botrychium dissectum
cypress-like sedge Carex pseudocyperus
deeproot clubmoss Lycopodium tristachyum
densetuft hairsedge Bulbostylis capillaris
desert goosefoot Chenopodium pratericola
dogtooth violet Erythronium americanum
Dortmann's cardinalflower Lobelia dortmanna
downy goldenrod Solidago puberula
downy rattlesnake plantain Goodyera pubescens
downy willowherb Epilobium strictum
dragon's mouth Arethusa bulbosa
drooping woodland sedge Carex arctata
Dudley's rush Juncus dudleyi
dwarf cinquefoil Potentilla canadensis
dwarf ginseng Panax trifolius
dwarf red blackberry Rubus pubescens
dwarf scouringrush Equisetum scirpoides
early goldenrod Solidago juncea
early meadow-rue Thalictrum dioicum
early saxifrage Saxifraga virginiensis
early wildrye Elymus macgregorii
earth loosestrife Lysimachia terrestris
eastern blue-eyed grass Sisyrinchium atlanticum
eastern daisy fleabane Erigeron annuus
eastern hayscented fern Dennstaedtia punctilobula
eastern hemlockparsley Conioselinum chinense
eastern leatherwood Dirca palustris
Eaton's rosette grass Dichanthelium spretum
ebony spleenwort Asplenium platyneuron
erect knotweed Polygonum erectum
fall phlox Phlox paniculata
feathery false lily of the valley Maianthemum racemosum
fernleaf yellow false foxglove Aureolaria pedicularia
fewnerved cottongrass Eriophorum tenellum
fewseed sedge Carex oligosperma
fibrousroot sedge Carex communis
fireberry hawthorn Crataegus chrysocarpa
flat-top goldentop Euthamia graminifolia
flatleaf bladderwort Utricularia intermedia
fleshy hawthorn Crataegus succulenta
forked bluecurls Trichostema dichotomum
fox grape Vitis labrusca
fragrant bedstraw Galium triflorum
fringed loosestrife Lysimachia ciliata
fringed willowherb Epilobium ciliatum
gall of the earth Prenanthes trifoliolata
gaywings Polygala paucifolia
golden hedgehyssop Gratiola aurea
grassy arrowhead Sagittaria graminea
great ragweed Ambrosia trifida
greater fringed gentian Gentianopsis crinita
greater purple fringed orchid Platanthera grandiflora
greater water dock Rumex orbiculatus
green adder's-mouth orchid Malaxis unifolia
green carpetweed Mollugo verticillata
green fringed orchid Platanthera lacera
Greene's rush Juncus greenei
greenflowered wintergreen Pyrola chlorantha
groundcedar Lycopodium complanatum
grove bluegrass Poa alsodes
hairy lettuce Lactuca hirsuta
hairy Solomon's seal Polygonatum pubescens
hairy woodrush Luzula acuminata
hairystem gooseberry Ribes hirtellum
halberdleaf tearthumb Polygonum arifolium
handsome Harry Rhexia virginica
harlequin blueflag Iris versicolor
hay sedge Carex argyrantha
Hayden's sedge Carex haydenii
hemlock waterparsnip Sium suave
hiddenfruit bladderwort Utricularia geminiscapa
hoary frostweed Helianthemum bicknellii
hookedspur violet Viola adunca
Hooker's orchid Platanthera hookeri
horned bladderwort Utricularia cornuta
horned pondweed Zannichellia palustris
Howell's pussytoes Antennaria howellii
humped bladderwort Utricularia gibba
Huron green orchid Platanthera huronensis
Indian cucumber Medeola virginiana
Indian-tobacco Lobelia inflata
Indianpipe Monotropa uniflora
inundated clubmoss Lycopodiella inundata
king of the meadow Thalictrum pubescens
knotsheath sedge Carex retrorsa
lanceleaf figwort Scrophularia lanceolata
large St. Johnswort Hypericum majus
largepod pinweed Lechea intermedia
leathery grapefern Botrychium multifidum
lesser Canadian St. Johnswort Hypericum canadense
lesser purple fringed orchid Platanthera psycodes
lesser rattlesnake plantain Goodyera repens
lesser roundleaved orchid Platanthera orbiculata
lesser yellow lady's slipper Cypripedium parviflorum
limp mannagrass Glyceria laxa
little evening primrose Oenothera perennis
little floatingheart Nymphoides cordata
long beechfern Phegopteris connectilis
longstalk sedge Carex pedunculata
longstyle sweetroot Osmorhiza longistylis
low rough aster Eurybia radula
Macoun's cudweed Pseudognaphalium macounii
maidenhair spleenwort Asplenium trichomanes
mapleleaf goosefoot Chenopodium simplex
marginal woodfern Dryopteris marginalis
marsh arrowgrass Triglochin palustris
marsh blue violet Viola cucullata
marsh mermaidweed Proserpinaca palustris
marsh pea Lathyrus palustris
marsh skullcap Scutellaria galericulata
marsh willowherb Epilobium palustre
Maryland sanicle Sanicula marilandica
matricary grapefern Botrychium matricariifolium
meadow willow Salix petiolaris
moccasin flower Cypripedium acaule
mountain woodsorrel Oxalis montana
narrowleaf bur-reed Sparganium angustifolium
narrowleaf cowwheat Melampyrum lineare
narrowleaf mountainmint Pycnanthemum tenuifolium
narrowpanicle rush Juncus brevicaudatus
neckweed Veronica peregrina
New England aster Symphyotrichum novae-angliae
northeastern sedge Carex cryptolepis
northern bog bedstraw Galium labradoricum
northern bugleweed Lycopus uniflorus
northern dewberry Rubus flagellaris
northern evening primrose Oenothera parviflora
northern long sedge Carex folliculata
northern panicgrass Dichanthelium boreale
northern sedge Carex deflexa
northern selaginella Selaginella rupestris
northern shorthusk Brachyelytrum aristosum
northern slender lady's tresses Spiranthes lacera
northern water plantain Alisma triviale
Norwegian cinquefoil Potentilla norvegica
Oakes' pondweed Potamogeton oakesianus
oldpasture bluegrass Poa saltuensis
oneflowered broomrape Orobanche uniflora
openfield sedge Carex conoidea
painted trillium Trillium undulatum
pale dock Rumex altissimus
pale false mannagrass Torreyochloa pallida
pale sedge Carex pallescens
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
partridgeberry Mitchella repens
pasture thistle Cirsium pumilum
Philadelphia panicgrass Panicum philadelphicum
pinesap Monotropa hypopitys
pitseed goosefoot Chenopodium berlandieri
pointedleaf ticktrefoil Desmodium glutinosum
poverty oatgrass Danthonia spicata
prairie sunflower Helianthus petiolaris
purple chokeberry Aronia ×prunifolia
purple marshlocks Comarum palustre
purple milkwort Polygala sanguinea
purple pitcherplant Sarracenia purpurea
purplestem angelica Angelica atropurpurea
Pursh seepweed Suaeda calceoliformis
rabbit-tobacco Pseudognaphalium obtusifolium
rannoch-rush Scheuchzeria palustris
rare clubmoss Lycopodium obscurum
red baneberry Actaea rubra
red columbine Aquilegia canadensis
red trillium Trillium erectum
ribbed sedge Carex virescens
rice button aster Symphyotrichum dumosum
Robbins' spikerush Eleocharis robbinsii
Robert geranium Geranium robertianum
robin runaway Dalibarda repens
robin's plantain Erigeron pulchellus
rock harlequin Corydalis sempervirens
rock polypody Polypodium virginianum
rosy sedge Carex rosea
rough hawkweed Hieracium scabrum
roughleaf ricegrass Oryzopsis asperifolia
roundleaf sundew Drosera rotundifolia
roundleaf yellow violet Viola rotundifolia
running clubmoss Lycopodium clavatum
running serviceberry Amelanchier stolonifera
rusty woodsia Woodsia ilvensis
salt sandspurry Spergularia salina
saltmeadow rush Juncus gerardii
sand bittercress Cardamine parviflora
scaldweed Cuscuta gronovii
seaside arrowgrass Triglochin maritima
seaside sandmat Chamaesyce polygonifolia
seaside sandplant Honckenya peploides
seawrack Zostera marina
sensitive fern Onoclea sensibilis
sessileleaf bellwort Uvularia sessilifolia
setose blackberry Rubus setosus
sevenangle pipewort Eriocaulon aquaticum
sheep laurel Kalmia angustifolia
shining clubmoss Huperzia lucidula
shortbeak sedge Carex brevior
showy lady's slipper Cypripedium reginae
showy ticktrefoil Desmodium canadense
shrubby fivefingers Sibbaldiopsis tridentata
sidebells wintergreen Orthilia secunda
silver false spleenwort Deparia acrostichoides
single delight Moneses uniflora
skullcap speedwell Veronica scutellata
skunk currant Ribes glandulosum
sleepy silene Silene antirrhina
slender rosette grass Dichanthelium xanthophysum
slender waternymph Najas gracillima
slenderleaf false foxglove Agalinis tenuifolia
slimleaf panicgrass Dichanthelium linearifolium
small bur-reed Sparganium natans
small cranberry Vaccinium oxycoccos
small green wood orchid Platanthera clavellata
small pondweed Potamogeton pusillus
Smith's bulrush Schoenoplectiella smithii
smooth blackberry Rubus canadensis
smooth carrionflower Smilax herbacea
smooth oxeye Heliopsis helianthoides
smooth rose Rosa blanda
smooth sawgrass Cladium mariscoides
smooth Solomon's seal Polygonatum biflorum
smooth yellow false foxglove Aureolaria flava
snailseed pondweed Potamogeton bicupulatus
snakemouth orchid Pogonia ophioglossoides
spinulose woodfern Dryopteris carthusiana
spiral pondweed Potamogeton spirillus
spoonleaf sundew Drosera intermedia
spotted geranium Geranium maculatum
spotted sandmat Chamaesyce maculata
spotted water hemlock Cicuta maculata
spreading dogbane Apocynum androsaemifolium
spring forget-me-not Myosotis verna
starflower Trientalis borealis
starry false lily of the valley Maianthemum stellatum
starved panicgrass Dichanthelium depauperatum
stout goldenrod Solidago squarrosa
strict blue-eyed grass Sisyrinchium montanum
summer coralroot Corallorhiza maculata
swamp thistle Cirsium muticum
swamp verbena Verbena hastata
Swan's sedge Carex swanii
swaying bulrush Schoenoplectus subterminalis
sweet white violet Viola blanda
tall blue lettuce Lactuca biennis
tall rattlesnakeroot Prenanthes altissima
tall thimbleweed Anemone virginiana
thinleaf cottonsedge Eriophorum viridicarinatum
threadleaf crowfoot Ranunculus trichophyllus
threeleaf false lily of the valley Maianthemum trifolium
threeleaf goldthread Coptis trifolia
toothed flatsedge Cyperus dentatus
trailing arbutus Epigaea repens
triangle orache Atriplex prostrata
tuberous grasspink Calopogon tuberosus
Tuckerman's pondweed Potamogeton confervoides
tufted lovegrass Eragrostis pectinacea
tussock cottongrass Eriophorum vaginatum
twinflower Linnaea borealis
twining screwstem Bartonia paniculata
twistedstalk Streptopus lanceolatus
umbrella flatsedge Cyperus diandrus
variegated scouringrush Equisetum variegatum
velvetleaf huckleberry Vaccinium myrtilloides
Viola ×primulifolia Viola ×primulifolia
Virginia chainfern Woodwardia virginica
Virginia marsh St. Johnswort Triadenum virginicum
Virginia pepperweed Lepidium virginicum
Virginia strawberry Fragaria virginiana
water arum Calla palustris
wavyleaf aster Symphyotrichum undulatum
waxflower shinleaf Pyrola elliptica
Welsh mudwort Limosella australis
western blue virginsbower Clematis occidentalis
western oakfern Gymnocarpium dryopteris
western poison ivy Toxicodendron rydbergii
western waterweed Elodea nuttallii
whip-poor-will flower Trillium cernuum
white baneberry Actaea pachypoda
white beaksedge Rhynchospora alba
white fringed orchid Platanthera blephariglottis
white goldenrod Solidago bicolor
white rattlesnakeroot Prenanthes alba
white snakeroot Ageratina altissima
white turtlehead Chelone glabra
white violet Viola renifolia
whitetinge sedge Carex albicans
whorled milkwort Polygala verticillata
whorled wood aster Oclemena acuminata
whorled yellow loosestrife Lysimachia quadrifolia
wild cucumber Echinocystis lobata
witchgrass Panicum capillare
woman's tobacco Antennaria plantaginifolia
wood anemone Anemone quinquefolia
woodbine Parthenocissus vitacea
woodland strawberry Fragaria vesca
woollyfruit sedge Carex lasiocarpa
yellow avens Geum aleppicum
yellow coralroot Corallorhiza trifida
yellow loosestrife Lysimachia ×producta
yellow screwstem Bartonia virginica
yellow sedge Carex flava
yellow water buttercup Ranunculus flabellaris
yellow widelip orchid Liparis loeselii
yellowroot Xanthorhiza simplicissima
yellowseed false pimpernel Lindernia dubia

Also listed as native and introduced here 6

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.

American red raspberryRubus idaeus
annual ragweedAmbrosia artemisiifolia
common reedPhragmites australis
hedge false bindweedCalystegia sepium
Kentucky bluegrassPoa pratensis
wood bluegrassPoa nemoralis

Compared with Maine

The typical county is the median of the 16 Maine 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, Knox County and Maine
Measure	Knox County	Typical county	Statewide
Native species	715	681	1,278
Garden-ready natives	320	303	510
Tree	78	—	112
Shrub	63	—	95
Wildflower (forb)	360	—	636
Grass or grass-like	156	—	326
Vine	21	—	33
Fern	37	—	76

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: Knox County (county FIPS 23013), Maine. 715 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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