Native plants · Rhode Island

Native plants of Washington County

668 plant species are recorded as native to Rhode Island in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Washington County by USDA PLANTS. 283 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

Washington County, Rhode Island

Native species: 668 Typical Rhode Island county: 501 (median of 5 counties)
Garden-ready natives: 283 Typical Rhode Island county: 236
Share by type (all 668 native species): Percent of the 668 native species in each growth type

Tree 11% (72)
Shrub 7% (47)
Wildflower (forb) 51% (340)
Grass or grass-like 22% (149)
Vine 3% (23)
Fern 6% (37)

Wildflowers make up the largest share of the native list (51%), 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 6b to 7b (2023 map).

The native plant list

Garden-ready natives 283

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

Garden-ready native plants of Washington County, Rhode Island
Plant	Type	Height	Light	Water use	Hardy to
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 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 sycamore Platanus occidentalis	Tree	100 ft	Sun–part shade	High	Zone 4a
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
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 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
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
beaked spikerush Eleocharis rostellata	Grass or grass-like	3 ft	Sun	High	Zone 4b
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 oak Quercus velutina	Tree	80 ft	Sun–part shade	Medium	Zone 4a
black walnut Juglans nigra	Tree	100 ft	Sun	High	Zone 4b
black willow Salix nigra	Tree	100 ft	Sun	High	Zone 1b
blackgum Nyssa sylvatica	Tree	95 ft	Shade-tolerant	Medium	Zone 5b
blister sedge Carex vesicaria	Grass or grass-like	3 ft	Sun–part shade	High	Zone 3b
blue huckleberry Gaylussacia frondosa	Shrub	6 ft	Shade-tolerant	Low	Zone 5a
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
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
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
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
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 canadensis	Wildflower (forb)	3.5 ft	Sun	Medium	Zone 3a
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 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
Carolina redroot Lachnanthes caroliana	Wildflower (forb)	3 ft	Sun	Medium	Zone 8b
Carolina rose Rosa carolina	Shrub	5 ft	Sun–part shade	Low	Zone 3a
chestnut oak Quercus montana	Tree	73 ft	Sun–part shade	Medium	Zone 4a
cinnamon fern Osmunda cinnamomea	Fern	4.9 ft	Shade-tolerant	Medium	Zone 4a
climbing hempvine Mikania scandens	Vine	1 ft	Shade-tolerant	Medium	Zone 3b
coast cockspur grass Echinochloa walteri	Grass or grass-like	6.5 ft	Sun	High	Zone 10b
coastal sweetpepperbush Clethra alnifolia	Shrub	16 ft	Sun–part shade	High	Zone 5a
cockspur hawthorn Crataegus crus-galli	Tree	30 ft	Sun	Low	Zone 4a
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 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 reed Phragmites australis	Shrub	13 ft	Sun	Medium	Zone 3b
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 spikerush Eleocharis palustris	Grass or grass-like	1.3 ft	Sun	High	Zone 3b
common winterberry Ilex verticillata	Tree	10 ft	Sun–part shade	High	Zone 4b
cosmopolitan bulrush Bolboschoenus maritimus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 5a
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
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
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
dwarf St. Johnswort Hypericum mutilum	Wildflower (forb)	2.6 ft	Sun–part shade	Medium	Zone 5a
eastern annual saltmarsh aster Symphyotrichum subulatum	Wildflower (forb)	3 ft	Sun	Medium	Zone 7a
eastern baccharis Baccharis halimifolia	Tree	10 ft	Sun–part shade	High	Zone 7a
eastern redcedar Juniperus virginiana	Tree	50 ft	Sun–part shade	Low	Zone 3a
eastern straw sedge Carex straminea	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4b
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
fall panicgrass Panicum dichotomiflorum	Grass or grass-like	3.3 ft	Sun	High	Zone 3a
field horsetail Equisetum arvense	Fern	11 in	Sun–part shade	High	Zone 3a
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
flowering dogwood Cornus florida	Tree	30 ft	Shade-tolerant	Low	Zone 4b
forked rush Juncus dichotomus	Grass or grass-like	2.9 ft	Sun–part shade	Medium	Zone 8b
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
fragrant flatsedge Cyperus odoratus	Grass or grass-like	2 ft	Sun	Medium	Zone 11b
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 ragwort Packera aurea	Wildflower (forb)	3.9 ft	Shade-tolerant	High	Zone 3a
grassleaf rush Juncus marginatus	Grass or grass-like	2 ft	Sun–part shade	Medium	Zone 5a
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
great laurel Rhododendron maximum	Tree	25 ft	Shade-tolerant	Medium	Zone 6a
greater bladder sedge Carex intumescens	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
greater straw sedge Carex normalis	Grass or grass-like	5 ft	Shade-tolerant	High	Zone 4a
green arrow arum Peltandra virginica	Wildflower (forb)	2.3 ft	Sun–part shade	High	Zone 5a
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
greenwhite sedge Carex albolutescens	Grass or grass-like	3.9 ft	Sun–part shade	Medium	Zone 3b
groundnut Apios americana	Vine	1 ft	Shade-tolerant	Medium	Zone 5a
hairy lespedeza Lespedeza hirta	Wildflower (forb)	6 ft	Sun	Low	Zone 6a
hairy sedge Carex lacustris	Grass or grass-like	5 ft	Shade-tolerant	High	Zone 4b
hairy white oldfield aster Symphyotrichum pilosum	Wildflower (forb)	3 ft	Shade-tolerant	Medium	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
hophornbeam Ostrya virginiana	Tree	45 ft	Shade-tolerant	Low	Zone 3b
horseflyweed Baptisia tinctoria	Wildflower (forb)	2.5 ft	Sun	Low	Zone 7b
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
Jesuit's bark Iva frutescens	Wildflower (forb)	9 ft	Sun	High	Zone 7b
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
late purple aster Symphyotrichum patens	Wildflower (forb)	2.5 ft	Shade-tolerant	Medium	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
little bluestem Schizachyrium scoparium	Grass or grass-like	3 ft	Sun	Low	Zone 3b
little green sedge Carex viridula	Grass or grass-like	1.5 ft	Sun	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
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
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
mockernut hickory Carya tomentosa	Tree	85 ft	Sun–part shade	Medium	Zone 4a
mountain laurel Kalmia latifolia	Tree	6 ft	Shade-tolerant	Low	Zone 5a
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
needle spikerush Eleocharis acicularis	Grass or grass-like	8 in	Sun	Medium	Zone 5a
New Jersey tea Ceanothus americanus	Shrub	3 ft	Shade-tolerant	Low	Zone 4b
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
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 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
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 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
Nuttall's reedgrass Calamagrostis coarctata	Grass or grass-like	4.9 ft	Sun	Medium	Zone 4b
orangegrass Hypericum gentianoides	Wildflower (forb)	2 ft	Sun–part shade	Low	Zone 12a
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
Pennsylvania smartweed Polygonum pensylvanicum	Wildflower (forb)	3.9 ft	Sun	Medium	Zone 10b
pickerelweed Pontederia cordata	Wildflower (forb)	3.2 ft	Sun	High	Zone 5a
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
possumhaw Viburnum nudum	Tree	15 ft	Shade-tolerant	Medium	Zone 4a
post oak Quercus stellata	Tree	60 ft	Sun	Medium	Zone 4a
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
purple lovegrass Eragrostis spectabilis	Grass or grass-like	11 in	Sun	Low	Zone 3a
purpleleaf willowherb Epilobium coloratum	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 4a
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 maple Acer rubrum	Tree	68 ft	Sun–part shade	High	Zone 2b
redtop panicgrass Panicum rigidulum	Grass or grass-like	3.3 ft	Sun	High	Zone 4a
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 wildrye Elymus riparius	Grass or grass-like	4.5 ft	Shade-tolerant	High	Zone 4a
Robbins' pondweed Potamogeton robbinsii	Wildflower (forb)	—	Sun	High	Zone 3b
roundleaf greenbrier Smilax rotundifolia	Vine	1 ft	Sun	Medium	Zone 4a
sago pondweed Stuckenia pectinata	Wildflower (forb)	—	Sun	High	Zone 3b
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
sassafras Sassafras albidum	Tree	75 ft	Sun	Low	Zone 4b
sawtooth blackberry Rubus argutus	Shrub	8.2 ft	Sun	Medium	Zone 6a
scarlet oak Quercus coccinea	Tree	70 ft	Sun	Medium	Zone 4b
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
shallow sedge Carex lurida	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 4a
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
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 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
small beggarticks Bidens discoidea	Wildflower (forb)	5.2 ft	Sun–part shade	High	Zone 12b
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
softstem bulrush Schoenoplectus tabernaemontani	Grass or grass-like	9 ft	Sun	High	Zone 3b
spiked muhly Muhlenbergia glomerata	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4a
spotted St. Johnswort Hypericum punctatum	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 4a
steeplebush Spiraea tomentosa	Shrub	4 ft	Sun	Low	Zone 4a
stiff goldenrod Oligoneuron rigidum	Wildflower (forb)	3.6 ft	Sun–part shade	Medium	Zone 3a
strawcolored flatsedge Cyperus strigosus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 4a
sturdy bulrush Bolboschoenus robustus	Grass or grass-like	4.9 ft	Sun	High	Zone 8a
summer grape Vitis aestivalis	Vine	30 ft	Shade-tolerant	Medium	Zone 5a
swamp azalea Rhododendron viscosum	Shrub	16 ft	Shade-tolerant	High	Zone 5b
swamp doghobble Eubotrys racemosus	Shrub	13 ft	Shade-tolerant	Medium	Zone 4a
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
sweetscent Pluchea odorata	Wildflower (forb)	4.9 ft	Sun	Medium	Zone 6a
switchgrass Panicum virgatum	Grass or grass-like	5 ft	Sun	Medium	Zone 3a
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
thicket sedge Carex abscondita	Grass or grass-like	8 in	Shade-tolerant	High	Zone 7a
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
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
trumpetweed Eutrochium fistulosum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 4b
tufted hairgrass Deschampsia cespitosa	Grass or grass-like	3.4 ft	Sun	Low	Zone 3b
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
variable panicgrass Dichanthelium commutatum	Grass or grass-like	4.9 ft	Sun–part shade	Low	Zone 4b
Virginia creeper Parthenocissus quinquefolia	Vine	1 ft	Sun–part shade	Low	Zone 4b
Virginia glasswort Salicornia depressa	Wildflower (forb)	1 ft	Sun	Medium	Zone 8b
Virginia rose Rosa virginiana	Shrub	6 ft	Sun–part shade	Medium	Zone 5b
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
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 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
whitegrass Leersia virginica	Grass or grass-like	3.9 ft	Shade-tolerant	Medium	Zone 3a
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
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
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
woolly beachheather Hudsonia tomentosa	Shrub	1 ft	Sun	Low	Zone 6a
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

Other native species recorded here 385

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
alpine violet Viola labradorica
American climbing fern Lygodium palmatum
American false pennyroyal Hedeoma pulegioides
American featherfoil Hottonia inflata
American hogpeanut Amphicarpaea bracteata
American lopseed Phryma leptostachya
American marshpennywort Hydrocotyle americana
American searocket Cakile edentula
American waterwort Elatine americana
American white waterlily Nymphaea odorata
anisescented goldenrod Solidago odora
annual seepweed Suaeda linearis
Apocynum ×floribundum Apocynum ×floribundum
Appalachian stitchwort Minuartia glabra
arrowfeather threeawn Aristida purpurascens
arrowhead rattlebox Crotalaria sagittalis
arrowleaf violet Viola sagittata
balm-of-Gilead Populus ×jackii
bastard toadflax Comandra umbellata
bayonet rush Juncus militaris
bear oak Quercus ilicifolia
Bebb willow Salix bebbiana
beechdrops Epifagus virginiana
birdfoot violet Viola pedata
blackfruit spikerush Eleocharis melanocarpa
blackseed plantain Plantago rugelii
Blue Ridge blueberry Vaccinium pallidum
blue skullcap Scutellaria lateriflora
bluntleaf sandwort Moehringia lateriflora
bluntlobe cliff fern Woodsia obtusa
bog fern Thelypteris simulata
bog white violet Viola lanceolata
bog yellowcress Rorippa palustris
bog yelloweyed grass Xyris difformis
bright green spikerush Eleocharis olivacea
bristly sarsaparilla Aralia hispida
broad beechfern Phegopteris hexagonoptera
broad looseflower sedge Carex laxiflora
brown beaksedge Rhynchospora fusca
brownfruit rush Juncus pelocarpus
brownish beaksedge Rhynchospora capitellata
bulblet-bearing water hemlock Cicuta bulbifera
bushy knotweed Polygonum ramosissimum
button sedge Carex bullata
buttonbush dodder Cuscuta cephalanthi
Canada lettuce Lactuca canadensis
Canada lily Lilium canadense
Canada mayflower Maianthemum canadense
Canada toadflax Nuttallanthus canadensis
Canadian clearweed Pilea pumila
Canadian woodnettle Laportea canadensis
cankerweed Prenanthes serpentaria
Carey's smartweed Polygonum careyi
Carolina horsenettle Solanum carolinense
catberry Ilex mucronata
chairmaker's bulrush Schoenoplectus americanus
cheerful sunflower Helianthus ×laetiflorus
Christmas fern Polystichum acrostichoides
churchmouse threeawn Aristida dichotoma
clammy hedgehyssop Gratiola neglecta
clasping water horehound Lycopus amplectens
claspingleaf pondweed Potamogeton perfoliatus
Clinton's woodfern Dryopteris clintoniana
clustered mountainmint Pycnanthemum muticum
coastal jointweed Polygonella articulata
coastal plain joe pye weed Eutrochium dubium
Collins' sedge Carex collinsii
combleaf mermaidweed Proserpinaca pectinata
common bladderwort Utricularia macrorhiza
common boneset Eupatorium perfoliatum
common cinquefoil Potentilla simplex
common yellow oxalis Oxalis stricta
compact dodder Cuscuta compacta
cone-cup spikerush Eleocharis tuberculosa
cranberry Vaccinium macrocarpon
creeping mannagrass Glyceria acutiflora
creeping spikerush Eleocharis fallax
creeping St. Johnswort Hypericum adpressum
curlytop knotweed Polygonum lapathifolium
cutleaf grapefern Botrychium dissectum
cutleaf watermilfoil Myriophyllum pinnatum
cypress panicgrass Dichanthelium dichotomum
deeproot clubmoss Lycopodium tristachyum
densetuft hairsedge Bulbostylis capillaris
desert goosefoot Chenopodium pratericola
devil's bite Liatris scariosa
dogtooth violet Erythronium americanum
Dortmann's cardinalflower Lobelia dortmanna
downy goldenrod Solidago puberula
downy rattlesnake plantain Goodyera pubescens
dragon's mouth Arethusa bulbosa
dwarf chinquapin oak Quercus prinoides
dwarf cinquefoil Potentilla canadensis
dwarf ginseng Panax trifolius
dwarf umbrella-sedge Fuirena pumila
early goldenrod Solidago juncea
early saxifrage Saxifraga virginiensis
earth loosestrife Lysimachia terrestris
eastern blue-eyed grass Sisyrinchium atlanticum
eastern hayscented fern Dennstaedtia punctilobula
eastern poison ivy Toxicodendron radicans
eastern purple bladderwort Utricularia purpurea
eastern showy aster Eurybia spectabilis
eastern silver aster Symphyotrichum concolor
Eaton's rosette grass Dichanthelium spretum
ebony spleenwort Asplenium platyneuron
Elliott's goldenrod Solidago latissimifolia
Engelmann's arrowhead Sagittaria engelmanniana
fall phlox Phlox paniculata
fan clubmoss Lycopodium digitatum
feathery false lily of the valley Maianthemum racemosum
fern flatsedge Cyperus filicinus
feverwort Triosteum perfoliatum
fewnerved cottongrass Eriophorum tenellum
fireberry hawthorn Crataegus chrysocarpa
fiveangled dodder Cuscuta pentagona
flatleaf bladderwort Utricularia intermedia
floating mannagrass Glyceria septentrionalis
forked bluecurls Trichostema dichotomum
fox grape Vitis labrusca
fragrant bedstraw Galium triflorum
gall of the earth Prenanthes trifoliolata
globefruit primrose-willow Ludwigia sphaerocarpa
golden hedgehyssop Gratiola aurea
goldenclub Orontium aquaticum
grassy arrowhead Sagittaria graminea
Gray's flatsedge Cyperus grayi
Great Plains flatsedge Cyperus lupulinus
green carpetweed Mollugo verticillata
green false hellebore Veratrum viride
Greene's rush Juncus greenei
hairy bedstraw Galium pilosum
hairy pinweed Lechea mucronata
hairy Solomon's seal Polygonatum pubescens
hairy wildrye Elymus villosus
hairystem gooseberry Ribes hirtellum
halberdleaf tearthumb Polygonum arifolium
handsome Harry Rhexia virginica
harlequin blueflag Iris versicolor
hay sedge Carex argyrantha
hemlock rosette grass Dichanthelium sabulorum
hemlock waterparsnip Sium suave
herbwilliam Ptilimnium capillaceum
hiddenfruit bladderwort Utricularia geminiscapa
hoary frostweed Helianthemum bicknellii
horned bladderwort Utricularia cornuta
horned pondweed Zannichellia palustris
Howell's pussytoes Antennaria howellii
humped bladderwort Utricularia gibba
hyssopleaf hedgenettle Stachys hyssopifolia
hyssopleaf thoroughwort Eupatorium hyssopifolium
Indian cucumber Medeola virginiana
Indian-tobacco Lobelia inflata
Indianpipe Monotropa uniflora
inundated clubmoss Lycopodiella inundata
jumpseed Polygonum virginianum
Kalm's hawkweed Hieracium kalmii
king of the meadow Thalictrum pubescens
lanceleaf figwort Scrophularia lanceolata
large St. Johnswort Hypericum majus
large whorled pogonia Isotria verticillata
largebracted plantain Plantago aristata
largepod pinweed Lechea intermedia
lavender bladderwort Utricularia resupinata
Leggett's pinweed Lechea pulchella
lesser Canadian St. Johnswort Hypericum canadense
lesser purple fringed orchid Platanthera psycodes
limber honeysuckle Lonicera dioica
little evening primrose Oenothera perennis
little floating bladderwort Utricularia radiata
little floatingheart Nymphoides cordata
little lady's tresses Spiranthes tuberosa
long beechfern Phegopteris connectilis
longbranch frostweed Helianthemum canadense
longstyle sweetroot Osmorhiza longistylis
low frostweed Helianthemum propinquum
low rough aster Eurybia radula
low watermilfoil Myriophyllum humile
lowland rotala Rotala ramosior
lowland yellow loosestrife Lysimachia hybrida
maidenhair spleenwort Asplenium trichomanes
manyflower marshpennywort Hydrocotyle umbellata
mapleleaf goosefoot Chenopodium simplex
marginal woodfern Dryopteris marginalis
marsh mermaidweed Proserpinaca palustris
marsh pea Lathyrus palustris
marsh skullcap Scutellaria galericulata
marsh willowherb Epilobium palustre
Maryland sanicle Sanicula marilandica
mat sandbur Cenchrus longispinus
matricary grapefern Botrychium matricariifolium
meadow spikemoss Selaginella apoda
moccasin flower Cypripedium acaule
narrowfruit horned beaksedge Rhynchospora inundata
narrowleaf cowwheat Melampyrum lineare
narrowleaf mountainmint Pycnanthemum tenuifolium
narrowleaf pinweed Lechea tenuifolia
narrowleaf whitetop aster Sericocarpus linifolius
narrowpanicle rush Juncus brevicaudatus
netted chainfern Woodwardia areolata
netted nutrush Scleria reticularis
northern bugleweed Lycopus uniflorus
northern dewberry Rubus flagellaris
northern evening primrose Oenothera parviflora
northern long sedge Carex folliculata
northern slender lady's tresses Spiranthes lacera
Norwegian cinquefoil Potentilla norvegica
Nuttall's milkwort Polygala nuttallii
Oakes' pondweed Potamogeton oakesianus
oneflowered broomrape Orobanche uniflora
oneseed bur cucumber Sicyos angulatus
openfield sedge Carex conoidea
pale beardtongue Penstemon pallidus
pale false mannagrass Torreyochloa pallida
pale St. Johnswort Hypericum ellipticum
palegreen orchid Platanthera flava
paleleaf woodland sunflower Helianthus strumosus
parasol whitetop Doellingeria umbellata
pasture thistle Cirsium pumilum
Pennsylvania sedge Carex pensylvanica
perennial saltmarsh aster Symphyotrichum tenuifolium
perfoliate bellwort Uvularia perfoliata
Philadelphia panicgrass Panicum philadelphicum
pinesap Monotropa hypopitys
pitseed goosefoot Chenopodium berlandieri
poison sumac Toxicodendron vernix
poke milkweed Asclepias exaltata
poorjoe Diodia teres
poverty oatgrass Danthonia spicata
prairie threeawn Aristida oligantha
purple chokeberry Aronia ×prunifolia
purple false foxglove Agalinis purpurea
purple milkwort Polygala sanguinea
purple pitcherplant Sarracenia purpurea
purple sandgrass Triplasis purpurea
queendevil Hieracium gronovii
rabbit-tobacco Pseudognaphalium obtusifolium
racemed milkwort Polygala polygama
rare clubmoss Lycopodium obscurum
red columbine Aquilegia canadensis
red trillium Trillium erectum
Reznicek's sedge Carex reznicekii
ribbed sedge Carex virescens
rice button aster Symphyotrichum dumosum
Robbins' spikerush Eleocharis robbinsii
rock polypody Polypodium virginianum
rose of Plymouth Sabatia stellaris
rosy sedge Carex rosea
rough barnyardgrass Echinochloa muricata
rough hawkweed Hieracium scabrum
roundleaf sundew Drosera rotundifolia
roundleaf thoroughwort Eupatorium rotundifolium
roundseed panicgrass Dichanthelium sphaerocarpon
running clubmoss Lycopodium clavatum
salt sandspurry Spergularia salina
saltmarsh false foxglove Agalinis maritima
saltmeadow rush Juncus gerardii
sandplain flax Linum intercursum
scaldweed Cuscuta gronovii
seaside arrowgrass Triglochin maritima
seaside sandmat Chamaesyce polygonifolia
seawrack Zostera marina
seedbox Ludwigia alternifolia
sensitive fern Onoclea sensibilis
sensitive partridge pea Chamaecrista nictitans
Sesquehana sandcherry Prunus susquehanae
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 goldenrod Solidago speciosa
shrubby fivefingers Sibbaldiopsis tridentata
silver false spleenwort Deparia acrostichoides
sixweeks fescue Vulpia octoflora
skullcap speedwell Veronica scutellata
sleepy silene Silene antirrhina
slender blue iris Iris prismatica
slender crabgrass Digitaria filiformis
slender fimbry Fimbristylis autumnalis
slender goldentop Euthamia caroliniana
slender threeseed mercury Acalypha gracilens
slender watermilfoil Myriophyllum tenellum
slender waternymph Najas gracillima
slender yelloweyed grass Xyris torta
slimleaf panicgrass Dichanthelium linearifolium
small green wood orchid Platanthera clavellata
small pondweed Potamogeton pusillus
small waterwort Elatine minima
Small's yelloweyed grass Xyris smalliana
smallflower halfchaff sedge Lipocarpha micrantha
Smith's bulrush Schoenoplectiella smithii
smooth sawgrass Cladium mariscoides
smooth small-leaf ticktrefoil Desmodium marilandicum
smooth winterberry Ilex laevigata
smooth yellow false foxglove Aureolaria flava
smoothsheath sedge Carex laevivaginata
snailseed pondweed Potamogeton bicupulatus
snakemouth orchid Pogonia ophioglossoides
spinulose woodfern Dryopteris carthusiana
spiral pondweed Potamogeton spirillus
spoonleaf purple everlasting Gamochaeta purpurea
spoonleaf sundew Drosera intermedia
spotted geranium Geranium maculatum
spotted pondweed Potamogeton pulcher
spotted sandmat Chamaesyce maculata
spreading dogbane Apocynum androsaemifolium
spring lady's tresses Spiranthes vernalis
starflower Trientalis borealis
starry false lily of the valley Maianthemum stellatum
starved panicgrass Dichanthelium depauperatum
sticky catchfly Silene caroliniana
stiff yellow flax Linum medium
stout smartweed Polygonum robustius
strict blue-eyed grass Sisyrinchium montanum
striped prince's pine Chimaphila maculata
summer coralroot Corallorhiza maculata
sundial lupine Lupinus perennis
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 horned beaksedge Rhynchospora macrostachya
tall rattlesnakeroot Prenanthes altissima
tapered rosette grass Dichanthelium acuminatum
thin paspalum Paspalum setaceum
thinleaf sunflower Helianthus decapetalus
threeleaf goldthread Coptis trifolia
thymeleaf pinweed Lechea minor
tidalmarsh amaranth Amaranthus cannabinus
toothed flatsedge Cyperus dentatus
toothed whitetop aster Sericocarpus asteroides
trailing arbutus Epigaea repens
triangle orache Atriplex prostrata
tuberous grasspink Calopogon tuberosus
Tuckerman's pondweed Potamogeton confervoides
turk's-cap lily Lilium superbum
twinflower Linnaea borealis
twining screwstem Bartonia paniculata
umbrella flatsedge Cyperus diandrus
upland brittle bladderfern Cystopteris tenuis
velvet sedge Carex vestita
Viola ×primulifolia Viola ×primulifolia
Virginia chainfern Woodwardia virginica
Virginia dwarfdandelion Krigia virginica
Virginia marsh St. Johnswort Triadenum virginicum
Virginia mountainmint Pycnanthemum virginianum
Virginia pepperweed Lepidium virginicum
Virginia strawberry Fragaria virginiana
warty panicgrass Panicum verrucosum
water arum Calla palustris
watershield Brasenia schreberi
wavyleaf aster Symphyotrichum undulatum
waxyleaf meadow-rue Thalictrum revolutum
Welsh mudwort Limosella australis
western oakfern Gymnocarpium dryopteris
whip-poor-will flower Trillium cernuum
white beaksedge Rhynchospora alba
white colicroot Aletris farinosa
white fringed orchid Platanthera blephariglottis
white heath aster Symphyotrichum ericoides
white turtlehead Chelone glabra
white vervain Verbena urticifolia
whorled milkwort Polygala verticillata
whorled mountainmint Pycnanthemum verticillatum
whorled wood aster Oclemena acuminata
whorled yellow loosestrife Lysimachia quadrifolia
widowsfrill Silene stellata
wild yam Dioscorea villosa
witchgrass Panicum capillare
wood anemone Anemone quinquefolia
wood lily Lilium philadelphicum
woodland flax Linum virginianum
woodland sunflower Helianthus divaricatus
woollyfruit sedge Carex lasiocarpa
yellow fringed orchid Platanthera ciliaris
yellow loosestrife Lysimachia ×producta
yellow screwstem Bartonia virginica
yellow thistle Cirsium horridulum
yellowseed false pimpernel Lindernia dubia
zigzag bladderwort Utricularia subulata

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
climbing false buckwheatPolygonum scandens
hedge false bindweedCalystegia sepium
Kentucky bluegrassPoa pratensis

Compared with Rhode Island

The typical county is the median of the 5 Rhode Island 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, Washington County and Rhode Island
Measure	Washington County	Typical county	Statewide
Native species	668	501	1,165
Garden-ready natives	283	236	440
Tree	72	—	110
Shrub	47	—	78
Wildflower (forb)	340	—	608
Grass or grass-like	149	—	270
Vine	23	—	34
Fern	37	—	65

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: Washington County (county FIPS 44009), Rhode Island. 668 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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