Native plants · Wyoming

Native plants of Crook County

622 plant species are recorded as native to Wyoming in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Crook County by USDA PLANTS. 308 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 5 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Crook County, Wyoming

Native species: 622 Typical Wyoming county: 414 (median of 23 counties)
Garden-ready natives: 308 Typical Wyoming county: 243
Share by type (all 622 native species): Percent of the 622 native species in each growth type

Tree 6% (36)
Shrub 7% (45)
Wildflower (forb) 59% (366)
Grass or grass-like 23% (145)
Vine 2% (12)
Fern 3% (18)

Wildflowers make up the largest share of the native list (59%), followed by grasses and grass-like plants (23%).

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 4b to 5a (2023 map).

The native plant list

Garden-ready natives 308

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

Garden-ready native plants of Crook County, Wyoming
Plant	Type	Height	Light	Water use	Hardy to
Alaska oniongrass Melica subulata	Grass or grass-like	3.3 ft	Shade-tolerant	Medium	Zone 4a
alderleaf mountain mahogany Cercocarpus montanus	Tree	15 ft	Sun–part shade	Low	Zone 3a
alkali buttercup Ranunculus cymbalaria	Wildflower (forb)	1 ft	Shade-tolerant	High	Zone 3b
alkali cordgrass Spartina gracilis	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
alpine sweetvetch Hedysarum alpinum	Wildflower (forb)	2 ft	Sun	Medium	Zone 1a
American bittersweet Celastrus scandens	Vine	15 ft	Shade-tolerant	High	Zone 3b
American black currant Ribes americanum	Shrub	3 ft	—	—	Zone 2b
American elm Ulmus americana	Tree	120 ft	Sun–part shade	High	Zone 2b
American licorice Glycyrrhiza lepidota	Wildflower (forb)	4 ft	Sun–part shade	High	Zone 3b
American plum Prunus americana	Tree	24 ft	Sun	Medium	Zone 3b
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 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
arrowleaf balsamroot Balsamorhiza sagittata	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
arumleaf arrowhead Sagittaria cuneata	Wildflower (forb)	2.6 ft	Sun	Medium	Zone 4a
awlfruit sedge Carex stipata	Grass or grass-like	3.5 ft	Shade-tolerant	Medium	Zone 3b
balsam poplar Populus balsamifera	Tree	80 ft	Sun	High	Zone 1a
beaked hazelnut Corylus cornuta	Tree	15 ft	Shade-tolerant	Medium	Zone 2b
bearded fescue Festuca subulata	Grass or grass-like	1.2 ft	Shade-tolerant	High	Zone 3b
Bebb's sedge Carex bebbii	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 3b
big bluestem Andropogon gerardii	Grass or grass-like	6 ft	Sun	Low	Zone 2b
big sagebrush Artemisia tridentata	Tree	4 ft	Sun	Medium	Zone 3a
blackeyed Susan Rudbeckia hirta	Wildflower (forb)	1 ft	Sun	Medium	Zone 5a
blanketflower Gaillardia aristata	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
blue grama Bouteloua gracilis	Grass or grass-like	1 ft	Sun	Medium	Zone 3a
blue wildrye Elymus glaucus	Grass or grass-like	3.3 ft	Shade-tolerant	Low	Zone 3b
bluebunch wheatgrass Pseudoroegneria spicata	Grass or grass-like	3 ft	Sun	Low	Zone 3b
bluejoint Calamagrostis canadensis	Grass or grass-like	4.9 ft	Sun	Medium	Zone 4a
bluntseed sweetroot Osmorhiza depauperata	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 4a
boxelder Acer negundo	Tree	60 ft	Shade-tolerant	Medium	Zone 2b
broadfruit bur-reed Sparganium eurycarpum	Wildflower (forb)	4.9 ft	Sun–part shade	High	Zone 4a
broadleaf cattail Typha latifolia	Wildflower (forb)	5 ft	Sun–part shade	High	Zone 3b
broom snakeweed Gutierrezia sarothrae	Shrub	1.5 ft	Sun	Medium	Zone 3b
buffalograss Bouteloua dactyloides	Grass or grass-like	6 in	Sun	Medium	Zone 3b
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
California amaranth Amaranthus californicus	Wildflower (forb)	1 ft	Sun	Medium	Zone 7a
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
Canadian horseweed Conyza canadensis	Wildflower (forb)	5 ft	Sun	Medium	Zone 12b
Canadian milkvetch Astragalus canadensis	Wildflower (forb)	6 in	Sun	Medium	Zone 3b
Carolina foxtail Alopecurus carolinianus	Grass or grass-like	1.7 ft	Sun	Low	Zone 3a
chokecherry Prunus virginiana	Tree	25 ft	Sun	Medium	Zone 3a
cloaked bulrush Scirpus pallidus	Grass or grass-like	5 ft	Sun	Medium	Zone 3b
clustered field sedge Carex praegracilis	Grass or grass-like	2 ft	Sun–part shade	Medium	Zone 3b
Colorado rush Juncus confusus	Grass or grass-like	1.5 ft	Sun–part shade	High	Zone 3b
Columbia needlegrass Achnatherum nelsonii	Grass or grass-like	3 ft	Sun	Low	Zone 4b
Columbian monkshood Aconitum columbianum	Wildflower (forb)	5 ft	Sun–part shade	High	Zone 4b
common cowparsnip Heracleum maximum	Wildflower (forb)	8 ft	Sun	High	Zone 3b
common duckweed Lemna minor	Wildflower (forb)	—	Sun	High	Zone 3b
common juniper Juniperus communis	Tree	10 ft	Sun	Low	Zone 3a
common selfheal Prunella vulgaris	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 3b
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
composite dropseed Sporobolus compositus	Grass or grass-like	3 ft	Sun	Low	Zone 3b
cosmopolitan bulrush Bolboschoenus maritimus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 5a
creeping barberry Mahonia repens	Shrub	2 ft	Shade-tolerant	Medium	Zone 5a
creeping juniper Juniperus horizontalis	Shrub	4 ft	Sun	High	Zone 3a
cursed buttercup Ranunculus sceleratus	Wildflower (forb)	2 ft	Shade-tolerant	High	Zone 12b
cutleaf coneflower Rudbeckia laciniata	Wildflower (forb)	8.2 ft	Shade-tolerant	Low	Zone 3b
cutleaf daisy Erigeron compositus	Wildflower (forb)	1 ft	Sun	Low	Zone 4a
darkthroat shootingstar Dodecatheon pulchellum	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 4a
devil's beggartick Bidens frondosa	Wildflower (forb)	4 ft	Sun–part shade	Medium	Zone 12a
Dewey sedge Carex deweyana	Grass or grass-like	3.8 ft	Shade-tolerant	Medium	Zone 4a
disk waterhyssop Bacopa rotundifolia	Wildflower (forb)	1 in	Sun	High	Zone 4a
dotted blazing star Liatris punctata	Wildflower (forb)	2 ft	Sun	Medium	Zone 3a
Douglas' dustymaiden Chaenactis douglasii	Wildflower (forb)	1.6 ft	Sun–part shade	Low	Zone 3b
downy paintedcup Castilleja sessiliflora	Wildflower (forb)	1.3 ft	Sun	Low	Zone 3b
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
eastern cottonwood Populus deltoides	Tree	190 ft	Sun	High	Zone 3a
eastern woodland sedge Carex blanda	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 4b
false indigo bush Amorpha fruticosa	Shrub	15 ft	Sun	Low	Zone 3b
fiddleleaf hawksbeard Crepis runcinata	Wildflower (forb)	1 ft	Sun	Medium	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
foothill arnica Arnica fulgens	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 4b
fourwing saltbush Atriplex canescens	Shrub	4 ft	Sun	Medium	Zone 3a
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
Gardner's saltbush Atriplex gardneri	Shrub	4 ft	Sun	Low	Zone 3b
giant goldenrod Solidago gigantea	Wildflower (forb)	8.2 ft	Sun–part shade	Medium	Zone 4a
golden crownbeard Verbesina encelioides	Wildflower (forb)	2 ft	Sun	Medium	Zone 5a
golden currant Ribes aureum	Shrub	10 ft	Sun–part shade	Low	Zone 3b
golden sedge Carex aurea	Grass or grass-like	1.2 ft	Sun–part shade	High	Zone 4a
greasewood Sarcobatus vermiculatus	Shrub	10 ft	Sun	Low	Zone 3b
green ash Fraxinus pennsylvanica	Tree	80 ft	Shade-tolerant	Medium	Zone 2b
green needlegrass Nassella viridula	Grass or grass-like	2 ft	Sun	Low	Zone 3b
Greene's mountain ash Sorbus scopulina	Tree	12 ft	Sun–part shade	Medium	Zone 7a
grouse whortleberry Vaccinium scoparium	Shrub	2 ft	Shade-tolerant	Medium	Zone 6a
hairy arnica Arnica mollis	Wildflower (forb)	2 ft	Sun–part shade	High	Zone 4a
hairy false goldenaster Heterotheca villosa	Wildflower (forb)	3 ft	Sun	Low	Zone 4a
hairy grama Bouteloua hirsuta	Grass or grass-like	6 in	Sun	Low	Zone 3b
hardstem bulrush Schoenoplectus acutus	Grass or grass-like	9.8 ft	Sun	High	Zone 3b
heartleaf arnica Arnica cordifolia	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4b
high northern buttercup Ranunculus hyperboreus	Wildflower (forb)	1 ft	Sun	—	Zone 1a
hooded lady's tresses Spiranthes romanzoffiana	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 3b
hophornbeam Ostrya virginiana	Tree	45 ft	Shade-tolerant	Low	Zone 3b
Idaho blue-eyed grass Sisyrinchium idahoense	Wildflower (forb)	1.7 ft	Shade-tolerant	High	Zone 3b
Idaho fescue Festuca idahoensis	Grass or grass-like	2 ft	Sun–part shade	Medium	Zone 3b
Indian ricegrass Achnatherum hymenoides	Grass or grass-like	2 ft	Sun	Low	Zone 3a
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
inland rush Juncus interior	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 3b
inland sedge Carex interior	Grass or grass-like	1.5 ft	Sun–part shade	High	Zone 3b
Jerusalem artichoke Helianthus tuberosus	Wildflower (forb)	9.8 ft	Sun–part shade	Low	Zone 3a
kinnikinnick Arctostaphylos uva-ursi	Shrub	6 in	Sun–part shade	Low	Zone 4a
knotted rush Juncus nodosus	Grass or grass-like	2 ft	Sun	Medium	Zone 4b
lambstongue ragwort Senecio integerrimus	Wildflower (forb)	1.1 ft	Sun–part shade	Medium	Zone 3b
largeflower hawksbeard Crepis occidentalis	Wildflower (forb)	11 in	Sun	Low	Zone 5a
largeleaf avens Geum macrophyllum	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 4a
leadplant Amorpha canescens	Shrub	4 ft	Shade-tolerant	Low	Zone 3b
leafy pondweed Potamogeton foliosus	Wildflower (forb)	—	Sun	High	Zone 3b
Lewis flax Linum lewisii	Wildflower (forb)	2.5 ft	Sun	Medium	Zone 3b
limestone meadow sedge Carex granularis	Grass or grass-like	2.5 ft	Shade-tolerant	High	Zone 4a
little barley Hordeum pusillum	Grass or grass-like	1.2 ft	Sun	Medium	Zone 10b
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
littleleaf pussytoes Antennaria microphylla	Wildflower (forb)	1 ft	Sun	Low	Zone 3b
littleseed ricegrass Piptatheropsis micrantha	Grass or grass-like	2.5 ft	Sun	Low	Zone 3b
longleaf pondweed Potamogeton nodosus	Wildflower (forb)	—	Sun	High	Zone 3b
longleaf starwort Stellaria longifolia	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 3b
longstyle rush Juncus longistylis	Grass or grass-like	1.8 ft	Sun–part shade	High	Zone 3b
low pussytoes Antennaria dimorpha	Wildflower (forb)	4 in	Sun–part shade	Low	Zone 3b
Macoun's buttercup Ranunculus macounii	Wildflower (forb)	1 ft	Sun	—	Zone 1a
maiden blue eyed Mary Collinsia parviflora	Wildflower (forb)	1 ft	Shade-tolerant	Medium	Zone 4a
marsh bellflower Campanula aparinoides	Wildflower (forb)	2 ft	Sun	High	Zone 3b
marsh muhly Muhlenbergia racemosa	Grass or grass-like	3 ft	Shade-tolerant	Medium	Zone 3b
Mexican muhly Muhlenbergia mexicana	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4a
miner's lettuce Claytonia perfoliata	Wildflower (forb)	1 ft	Shade-tolerant	Medium	Zone 12b
Missouri goldenrod Solidago missouriensis	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 3b
Modoc hawksbeard Crepis modocensis	Wildflower (forb)	1.4 ft	Sun	Low	Zone 4b
mountain brome Bromus marginatus	Grass or grass-like	4 ft	Sun	High	Zone 4b
muttongrass Poa fendleriana	Grass or grass-like	2 ft	Sun	Low	Zone 3b
nannyberry Viburnum lentago	Tree	28 ft	Shade-tolerant	Medium	Zone 4a
narrowleaf cottonwood Populus angustifolia	Tree	60 ft	Sun	High	Zone 4b
narrowleaf water plantain Alisma gramineum	Wildflower (forb)	1.5 ft	Sun	High	Zone 3a
narrowleaf willow Salix exigua	Tree	10 ft	Sun–part shade	High	Zone 3b
Nebraska sedge Carex nebrascensis	Grass or grass-like	3 ft	Sun	High	Zone 3b
needle and thread Hesperostipa comata	Grass or grass-like	3 ft	Sun	Low	Zone 3b
nodding beggartick Bidens cernua	Wildflower (forb)	3.2 ft	Sun–part shade	High	Zone 12a
nodding microseris Microseris nutans	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 4b
northern bedstraw Galium boreale	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 4a
northern water-starwort Callitriche hermaphroditica	Wildflower (forb)	—	Sun	High	Zone 4a
Northwest Territory sedge Carex utriculata	Grass or grass-like	3.5 ft	Sun	High	Zone 3a
Nuttall's alkaligrass Puccinellia nuttalliana	Grass or grass-like	10 in	Sun	Medium	Zone 3b
Nuttall's povertyweed Monolepis nuttalliana	Wildflower (forb)	10 in	Sun	Medium	Zone 12a
Nuttall's sunflower Helianthus nuttallii	Wildflower (forb)	10 ft	Sun	Medium	Zone 3b
old man's whiskers Geum triflorum	Wildflower (forb)	1.5 ft	Sun–part shade	Medium	Zone 3b
onespike danthonia Danthonia unispicata	Grass or grass-like	10 in	Sun	Low	Zone 4b
oniongrass Melica bulbosa	Grass or grass-like	1.8 ft	Sun–part shade	Low	Zone 3a
orange agoseris Agoseris aurantiaca	Wildflower (forb)	1 ft	Sun	Medium	Zone 4a
Pacific anemone Anemone multifida	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 5a
pale agoseris Agoseris glauca	Shrub	1 ft	Sun	Medium	Zone 4a
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
peachleaf willow Salix amygdaloides	Tree	60 ft	Sun	High	Zone 4a
Pennsylvania bittercress Cardamine pensylvanica	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 4a
Pennsylvania buttercup Ranunculus pensylvanicus	Wildflower (forb)	3.9 ft	Shade-tolerant	High	Zone 4b
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
pin cherry Prunus pensylvanica	Tree	30 ft	Sun	Medium	Zone 3b
pipsissewa Chimaphila umbellata	Shrub	1.5 ft	Shade-tolerant	Low	Zone 3b
plains muhly Muhlenbergia cuspidata	Grass or grass-like	1.4 ft	Sun	Low	Zone 3b
plains pricklypear Opuntia polyacantha	Shrub	2 ft	Sun	Low	Zone 4b
porcupinegrass Hesperostipa spartea	Grass or grass-like	4 ft	Sun	Medium	Zone 3b
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 dropseed Sporobolus heterolepis	Grass or grass-like	2.3 ft	Sun–part shade	Low	Zone 3b
prairie fleabane Erigeron strigosus	Wildflower (forb)	3 ft	Sun	Medium	Zone 4b
prairie Junegrass Koeleria macrantha	Grass or grass-like	1.5 ft	Shade-tolerant	High	Zone 3b
prairie sagewort Artemisia frigida	Shrub	2 ft	Sun–part shade	Low	Zone 3a
prairie sandreed Calamovilfa longifolia	Grass or grass-like	4.5 ft	Sun	Medium	Zone 3b
prairie wedgescale Sphenopholis obtusata	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 3a
prickly currant Ribes lacustre	Shrub	3 ft	Shade-tolerant	—	Zone 1a
prickly rose Rosa acicularis	Shrub	4 ft	Shade-tolerant	High	Zone 3b
purple avens Geum rivale	Wildflower (forb)	3 ft	Sun	High	Zone 4a
purple locoweed Oxytropis lambertii	Wildflower (forb)	1.4 ft	Sun	Low	Zone 3b
purple milkvetch Astragalus agrestis	Wildflower (forb)	1 ft	Sun	Low	Zone 4a
purple prairie clover Dalea purpurea	Wildflower (forb)	3 ft	Sun	Medium	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 fern Botrychium virginianum	Fern	1.4 ft	Shade-tolerant	Medium	Zone 3b
red elderberry Sambucus racemosa	Tree	18 ft	Sun–part shade	High	Zone 4a
red goosefoot Chenopodium rubrum	Wildflower (forb)	3 ft	Sun	High	Zone 12b
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
rice cutgrass Leersia oryzoides	Grass or grass-like	4.9 ft	Sun	High	Zone 4a
Richardson's geranium Geranium richardsonii	Wildflower (forb)	3 ft	Sun–part shade	High	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
Rocky Mountain beeplant Cleome serrulata	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 12b
Rocky Mountain iris Iris missouriensis	Wildflower (forb)	1 ft	Sun–part shade	High	Zone 4b
Rocky Mountain juniper Juniperus scopulorum	Tree	50 ft	Sun	Low	Zone 3b
Ross' sedge Carex rossii	Grass or grass-like	1 ft	Sun–part shade	Medium	Zone 4a
rough bentgrass Agrostis scabra	Grass or grass-like	2.5 ft	Sun	Medium	Zone 3b
rubber rabbitbrush Ericameria nauseosa	Shrub	4 ft	Sun	Medium	Zone 3b
russet buffaloberry Shepherdia canadensis	Shrub	6 ft	Sun–part shade	Medium	Zone 1a
sagebrush buttercup Ranunculus glaberrimus	Wildflower (forb)	6 in	Sun	High	Zone 3a
sago pondweed Stuckenia pectinata	Wildflower (forb)	—	Sun	High	Zone 3b
saltgrass Distichlis spicata	Grass or grass-like	1.1 ft	Sun	Medium	Zone 3b
sand dropseed Sporobolus cryptandrus	Grass or grass-like	3 ft	Sun	Low	Zone 3b
sandbar willow Salix interior	Tree	30 ft	Sun	—	Zone 1a
Sandberg bluegrass Poa secunda	Grass or grass-like	1.4 ft	Sun–part shade	Low	Zone 3b
sandcherry Prunus pumila	Shrub	6 ft	Shade-tolerant	Low	Zone 4a
sanddune wallflower Erysimum capitatum	Wildflower (forb)	2.5 ft	Sun	Medium	Zone 4b
Saskatoon serviceberry Amelanchier alnifolia	Tree	15 ft	Sun–part shade	Medium	Zone 1a
sawsepal penstemon Penstemon glaber	Wildflower (forb)	2 ft	Sun	Medium	Zone 3b
scarlet globemallow Sphaeralcea coccinea	Wildflower (forb)	1.5 ft	Sun	Low	Zone 5a
Scouler's willow Salix scouleriana	Tree	50 ft	Sun–part shade	High	Zone 6a
scratchgrass Muhlenbergia asperifolia	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 5b
seep monkeyflower Mimulus guttatus	Wildflower (forb)	2.5 ft	Shade-tolerant	High	Zone 3b
shortawn foxtail Alopecurus aequalis	Grass or grass-like	2.5 ft	Sun–part shade	High	Zone 3b
showy milkweed Asclepias speciosa	Wildflower (forb)	6 ft	Sun	Medium	Zone 4a
shrubby cinquefoil Dasiphora fruticosa	Shrub	2.5 ft	Sun–part shade	Low	Zone 4b
sideoats grama Bouteloua curtipendula	Grass or grass-like	3 ft	Sun	Medium	Zone 3a
Sierra rush Juncus nevadensis	Grass or grass-like	2 ft	Sun–part shade	High	Zone 4a
silky lupine Lupinus sericeus	Wildflower (forb)	6 ft	Sun	Low	Zone 4b
silver buffaloberry Shepherdia argentea	Tree	18 ft	Sun–part shade	Medium	Zone 3b
silver sagebrush Artemisia cana	Shrub	5 ft	Sun	Low	Zone 3a
silverleaf phacelia Phacelia hastata	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
silverweed cinquefoil Argentina anserina	Wildflower (forb)	6 in	Shade-tolerant	High	Zone 5a
silvery lupine Lupinus argenteus	Wildflower (forb)	1.5 ft	Sun	Low	Zone 3a
skunkbush sumac Rhus trilobata	Shrub	4 ft	Sun–part shade	Low	Zone 2a
slender bulrush Schoenoplectus heterochaetus	Grass or grass-like	4.9 ft	Sun	High	Zone 3b
slender cinquefoil Potentilla gracilis	Wildflower (forb)	2.4 ft	Sun	Low	Zone 3a
slender wheatgrass Elymus trachycaulus	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
slimstem reedgrass Calamagrostis stricta	Grass or grass-like	3 ft	Sun–part shade	High	Zone 3a
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
smallwing sedge Carex microptera	Grass or grass-like	2 ft	Sun	High	Zone 4a
smooth blue aster Symphyotrichum laeve	Wildflower (forb)	4 ft	Sun	Medium	Zone 3a
smooth horsetail Equisetum laevigatum	Fern	5 ft	Sun	Low	Zone 3b
smooth sumac Rhus glabra	Tree	12 ft	Sun	Low	Zone 4a
snowbrush ceanothus Ceanothus velutinus	Tree	10 ft	Sun	Medium	Zone 5a
soapweed yucca Yucca glauca	Shrub	1 ft	Sun	Low	Zone 4b
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
spike bentgrass Agrostis exarata	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
spike trisetum Trisetum spicatum	Grass or grass-like	1.9 ft	Sun–part shade	Medium	Zone 3b
spiked muhly Muhlenbergia glomerata	Grass or grass-like	3 ft	Sun–part shade	Medium	Zone 4a
spineless horsebrush Tetradymia canescens	Shrub	4 ft	Sun	Low	Zone 9a
spotted joe pye weed Eutrochium maculatum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 4b
spreading yellowcress Rorippa sinuata	Wildflower (forb)	1 ft	Sun	Medium	Zone 3b
spreadingpod rockcress Arabis ×divaricarpa	Wildflower (forb)	3 ft	Shade-tolerant	Low	Zone 4b
squirreltail Elymus elymoides	Grass or grass-like	1.5 ft	Sun	Low	Zone 3a
star duckweed Lemna trisulca	Wildflower (forb)	4 in	Sun	High	Zone 3b
sticky purple geranium Geranium viscosissimum	Wildflower (forb)	3 ft	Shade-tolerant	Low	Zone 6a
stiff clubmoss Lycopodium annotinum	Fern	1 ft	Shade-tolerant	High	Zone 3a
stiff goldenrod Oligoneuron rigidum	Wildflower (forb)	3.6 ft	Sun–part shade	Medium	Zone 3a
switchgrass Panicum virgatum	Grass or grass-like	5 ft	Sun	Medium	Zone 3a
swordleaf rush Juncus ensifolius	Grass or grass-like	2 ft	Sun–part shade	High	Zone 3b
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 hawksbeard Crepis acuminata	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 3b
tenpetal blazingstar Mentzelia decapetala	Wildflower (forb)	3.5 ft	Sun	Medium	Zone 3b
textile onion Allium textile	Wildflower (forb)	1 ft	Sun–part shade	Medium	Zone 3b
thickspike wheatgrass Elymus lanceolatus	Grass or grass-like	2.3 ft	Sun	Low	Zone 3b
thimbleberry Rubus parviflorus	Shrub	4 ft	Sun–part shade	High	Zone 4b
thinleaf huckleberry Vaccinium membranaceum	Shrub	4.5 ft	Sun–part shade	Low	Zone 3b
threadleaf sedge Carex filifolia	Grass or grass-like	1.2 ft	Sun	Low	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
threetooth ragwort Packera tridenticulata	Wildflower (forb)	3 ft	Sun	Medium	Zone 5a
thrift mock goldenweed Stenotus armerioides	Wildflower (forb)	1 ft	Sun	Low	Zone 5a
timber oatgrass Danthonia intermedia	Grass or grass-like	1.5 ft	Sun–part shade	Low	Zone 4a
tiny mousetail Myosurus minimus	Wildflower (forb)	5 in	Sun–part shade	Medium	Zone 12b
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
tufted evening primrose Oenothera caespitosa	Wildflower (forb)	6 in	Sun	Low	Zone 6a
tufted hairgrass Deschampsia cespitosa	Grass or grass-like	3.4 ft	Sun	Low	Zone 3b
twoheaded water-starwort Callitriche heterophylla	Wildflower (forb)	—	Sun	High	Zone 4a
upright prairie coneflower Ratibida columnifera	Wildflower (forb)	3.1 ft	Sun	Medium	Zone 3a
Utah sweetvetch Hedysarum boreale	Wildflower (forb)	2 ft	Sun	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 wildrye Elymus virginicus	Grass or grass-like	2.5 ft	Shade-tolerant	Medium	Zone 4b
water birch Betula occidentalis	Tree	25 ft	Sun–part shade	High	Zone 1a
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
wax currant Ribes cereum	Shrub	3 ft	Sun	Low	Zone 5a
western pearly everlasting Anaphalis margaritacea	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 3a
western snowberry Symphoricarpos occidentalis	Shrub	3 ft	Sun–part shade	Low	Zone 3b
western valerian Valeriana occidentalis	Wildflower (forb)	3 ft	Sun	High	Zone 4b
western wheatgrass Pascopyrum smithii	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
western white clematis Clematis ligusticifolia	Vine	1 ft	Sun–part shade	Medium	Zone 3b
wheat sedge Carex atherodes	Grass or grass-like	5 ft	Sun	High	Zone 3b
white avens Geum canadense	Wildflower (forb)	3.9 ft	Shade-tolerant	Medium	Zone 4a
white hawkweed Hieracium albiflorum	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 4a
white panicle aster Symphyotrichum lanceolatum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 3b
white prairie clover Dalea candida	Wildflower (forb)	2 ft	Sun–part shade	Medium	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
wild bergamot Monarda fistulosa	Wildflower (forb)	4.9 ft	Sun–part shade	High	Zone 4a
wild sarsaparilla Aralia nudicaulis	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 3b
winterfat Krascheninnikovia lanata	Shrub	2 ft	Sun	Low	Zone 2a
woodland horsetail Equisetum sylvaticum	Fern	11 in	Shade-tolerant	Low	Zone 3a
Woods' rose Rosa woodsii	Shrub	3 ft	Sun–part shade	Medium	Zone 3a
woolly groundsel Packera cana	Wildflower (forb)	1.5 ft	Sun	Low	Zone 3a
woolly plantain Plantago patagonica	Wildflower (forb)	6 in	Sun	Low	Zone 12b
woollypod milkvetch Astragalus purshii	Wildflower (forb)	7 in	Sun	Low	Zone 4a
yellow owl's-clover Orthocarpus luteus	Wildflower (forb)	1.5 ft	Sun	Low	Zone 12b
yellow willow Salix lutea	Tree	16 ft	Sun–part shade	High	Zone 3a

Other native species recorded here 314

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.

alpine lewisia Lewisia pygmaea
alpine milkvetch Astragalus alpinus
American dragonhead Dracocephalum parviflorum
American lopseed Phryma leptostachya
American mannagrass Glyceria grandis
American sloughgrass Beckmannia syzigachne
American spurred gentian Halenia deflexa
annual buckwheat Eriogonum annuum
Apocynum ×floribundum Apocynum ×floribundum
aridland goosefoot Chenopodium desiccatum
aromatic aster Symphyotrichum oblongifolium
Aunt Lucy Ellisia nyctelea
autumn dwarf gentian Gentianella amarella
Back's sedge Carex backii
ballhead ipomopsis Ipomopsis congesta
balsam groundsel Packera paupercula
bastard toadflax Comandra umbellata
beautiful cinquefoil Potentilla pulcherrima
beautiful sandwort Minuartia rubella
Bebb willow Salix bebbiana
Bicknell's cranesbill Geranium bicknellii
big devils beggartick Bidens vulgata
bigbract verbena Verbena bracteata
blackgirdle bulrush Scirpus atrocinctus
blue giant hyssop Agastache foeniculum
bluntleaf sandwort Moehringia lateriflora
bog yellowcress Rorippa palustris
bottlebrush sedge Carex hystericina
bristleleaf sedge Carex eburnea
brittle bladderfern Cystopteris fragilis
brittle pricklypear Opuntia fragilis
buffalobur nightshade Solanum rostratum
bushy knotweed Polygonum ramosissimum
Canada lettuce Lactuca canadensis
Canada mayflower Maianthemum canadense
Canadian gooseberry Ribes oxyacanthoides
candle anemone Anemone cylindrica
carelessweed Cyclachaena xanthiifolia
Carolina draba Draba reptans
Carolina geranium Geranium carolinianum
chaffweed Anagallis minima
chairmaker's bulrush Schoenoplectus americanus
chickenthief Mentzelia oligosperma
clammy groundcherry Physalis heterophylla
clammy hedgehyssop Gratiola neglecta
clasping Venus' looking-glass Triodanis perfoliata
climbing false buckwheat Polygonum scandens
clustered broomrape Orobanche fasciculata
common starlily Leucocrinum montanum
cream pea Lathyrus ochroleucus
Cuman ragweed Ambrosia psilostachya
curlycup gumweed Grindelia squarrosa
curlytop knotweed Polygonum lapathifolium
cutleaf evening primrose Oenothera laciniata
cutleaf nightshade Solanum triflorum
Dakota mock vervain Glandularia bipinnatifida
desert biscuitroot Lomatium foeniculaceum
desert goosefoot Chenopodium pratericola
desert princesplume Stanleya pinnata
Douglas' knotweed Polygonum douglasii
Drummond's campion Silene drummondii
Drummond's false pennyroyal Hedeoma drummondii
dryspike sedge Carex siccata
Dudley's rush Juncus dudleyi
dwarf red blackberry Rubus pubescens
dwarf scouringrush Equisetum scirpoides
elkweed Frasera speciosa
Emory's sedge Carex emoryi
erect knotweed Polygonum erectum
fairy slipper Calypso bulbosa
fall rosette grass Dichanthelium wilcoxianum
false buffalograss Munroa squarrosa
false melic Schizachne purpurascens
falsegold groundsel Packera pseudaurea
feathery false lily of the valley Maianthemum racemosum
fetid marigold Dyssodia papposa
fineleaf hymenopappus Hymenopappus filifolius
fireberry hawthorn Crataegus chrysocarpa
flatspine bur ragweed Ambrosia acanthicarpa
flatspine stickseed Lappula occidentalis
Flodman's thistle Cirsium flodmanii
foothill bladderpod Lesquerella ludoviciana
foxtail barley Hordeum jubatum
fragrant bedstraw Galium triflorum
Fremont's goosefoot Chenopodium fremontii
fringed loosestrife Lysimachia ciliata
fringed willowherb Epilobium ciliatum
great ragweed Ambrosia trifida
green comet milkweed Asclepias viridiflora
greenflowered wintergreen Pyrola chlorantha
groundplum milkvetch Astragalus crassicarpus
hairy evening primrose Oenothera villosa
hairy four o'clock Mirabilis hirsuta
hairy hedgenettle Stachys pilosa
hairy wildrye Elymus villosus
heartleaf four o'clock Mirabilis nyctaginea
heavy sedge Carex gravida
hoary frostweed Helianthemum bicknellii
hoary tansyaster Machaeranthera canescens
hoary verbena Verbena stricta
hooded coralroot Corallorhiza striata
hookedspur violet Viola adunca
horned pondweed Zannichellia palustris
Howell's pussytoes Antennaria howellii
Iowa moonwort Botrychium campestre
James' cryptantha Cryptantha cinerea
knotsheath sedge Carex retrorsa
lacy tansyaster Machaeranthera pinnatifida
lanceleaf figwort Scrophularia lanceolata
large beardtongue Penstemon grandiflorus
large Indian breadroot Pediomelum esculentum
largepod pinweed Lechea intermedia
Laxmann's milkvetch Astragalus laxmannii
leathery knotweed Polygonum achoreum
lemon scurfpea Psoralidium lanceolatum
lesser spikemoss Selaginella densa
lilac penstemon Penstemon gracilis
limber honeysuckle Lonicera dioica
Lindley's aster Symphyotrichum ciliolatum
liverleaf wintergreen Pyrola asarifolia
long-stolon sedge Carex inops
longbract frog orchid Dactylorhiza viridis
longbract spiderwort Tradescantia bracteata
longleaf groundcherry Physalis longifolia
longstyle sweetroot Osmorhiza longistylis
Louisiana broomrape Orobanche ludoviciana
Macoun's barley ×Elyhordeum macounii
Macoun's cudweed Pseudognaphalium macounii
male fern Dryopteris filix-mas
manyflower stickseed Hackelia floribunda
mapleleaf goosefoot Chenopodium simplex
marsh arrowgrass Triglochin palustris
marsh skullcap Scutellaria galericulata
Maryland sanicle Sanicula marilandica
mat sandbur Cenchrus longispinus
matted sandmat Chamaesyce serpens
Maximilian sunflower Helianthus maximiliani
meadow deathcamas Zigadenus venenosus
meadow sedge Carex praticola
meadow zizia Zizia aptera
Menzies' campion Silene menziesii
Missouri foxtail cactus Escobaria missouriensis
Modoc yellowcress Rorippa tenerrima
mountain deathcamas Zigadenus elegans
mountain ricegrass Piptatheropsis pungens
mountain tansymustard Descurainia incana
mountain tarweed Madia glomerata
narrowleaf bur-reed Sparganium angustifolium
narrowleaf four o'clock Mirabilis linearis
narrowleaf hawkweed Hieracium umbellatum
narrowleaf purple coneflower Echinacea angustifolia
narrowleaf stoneseed Lithospermum incisum
neckweed Veronica peregrina
needleleaf navarretia Navarretia intertexta
needleleaf sedge Carex duriuscula
nodding chickweed Cerastium nutans
nodding onion Allium cernuum
nodding stickseed Hackelia deflexa
northern bog violet Viola nephrophylla
northern bugleweed Lycopus uniflorus
northern hollyfern Polystichum lonchitis
Northern Idaho biscuitroot Lomatium orientale
northern selaginella Selaginella rupestris
northern sweetgrass Hierochloe hirta
northern water plantain Alisma triviale
Norwegian cinquefoil Potentilla norvegica
oneflowered broomrape Orobanche uniflora
Oregon cliff fern Woodsia oregana
pale false mannagrass Torreyochloa pallida
pale spikerush Eleocharis macrostachya
Paradox cinquefoil Potentilla paradoxa
Peck's sedge Carex peckii
Pennsylvania cinquefoil Potentilla pensylvanica
Pennsylvania pellitory Parietaria pensylvanica
pinyon goosefoot Chenopodium atrovirens
pitseed goosefoot Chenopodium berlandieri
plains bluegrass Poa arida
plains springparsley Cymopterus acaulis
Porter brome Bromus porteri
poverty oatgrass Danthonia spicata
povertyweed Iva axillaris
prairie false dandelion Nothocalais cuspidata
prairie goldenrod Oligoneuron album
prairie groundsel Packera plattensis
prairie plantain Plantago elongata
prairie rose Rosa arkansana
prairie sandmat Chamaesyce missurica
prairie spiderwort Tradescantia occidentalis
prairie sunflower Helianthus petiolaris
prairie violet Viola pedatifida
purple cliffbrake Pellaea atropurpurea
purple meadow-rue Thalictrum dasycarpum
purple rattlesnakeroot Prenanthes racemosa
Pursh seepweed Suaeda calceoliformis
pygmyflower rockjasmine Androsace septentrionalis
red baneberry Actaea rubra
redwhisker clammyweed Polanisia dodecandra
ribseed sandmat Chamaesyce glyptosperma
Richardson's alumroot Heuchera richardsonii
Richardson's pondweed Potamogeton richardsonii
Richardson's sedge Carex richardsonii
Rocky Mountain fescue Festuca saximontana
Rocky Mountain goosefoot Chenopodium salinum
Rocky Mountain rush Juncus saximontanus
Rocky Mountain woodsia Woodsia scopulina
rosy pussytoes Antennaria rosea
rosy sedge Carex rosea
rough barnyardgrass Echinochloa muricata
roughfruit fairybells Prosartes trachycarpa
roughleaf ricegrass Oryzopsis asperifolia
rush skeletonplant Lygodesmia juncea
rusty lupine Lupinus pusillus
sagebrush violet Viola vallicola
saline saltbush Atriplex subspicata
sand sagebrush Artemisia filifolia
sandhill amaranth Amaranthus arenicola
scarlet beeblossom Oenothera suffrutescens
Schweinitz's flatsedge Cyperus schweinitzii
Scouler's popcornflower Plagiobothrys scouleri
scrambled eggs Corydalis aurea
seaside arrowgrass Triglochin maritima
Seneca snakeroot Polygala senega
shaggy dwarf morning-glory Evolvulus nuttallianus
shaggy fleabane Erigeron pumilus
shortbeak sedge Carex brevior
shortspike watermilfoil Myriophyllum sibiricum
shortstalk chickweed Cerastium brachypodum
shy wallflower Erysimum inconspicuum
sidebells wintergreen Orthilia secunda
silverleaf Indian breadroot Pediomelum argophyllum
silverscale saltbush Atriplex argentea
sixweeks fescue Vulpia octoflora
sleepy silene Silene antirrhina
slender lipfern Cheilanthes feei
slender phlox Microsteris gracilis
slender wedgescale Sphenopholis intermedia
slender yellow woodsorrel Oxalis dillenii
slender-spire orchid Piperia unalascensis
slimleaf milkweed Asclepias stenophylla
slimleaf panicgrass Dichanthelium linearifolium
slimpod Venus' looking-glass Triodanis leptocarpa
small pondweed Potamogeton pusillus
small-leaf pussytoes Antennaria parvifolia
smooth cliffbrake Pellaea glabella
smooth Solomon's seal Polygonatum biflorum
snow on the mountain Euphorbia marginata
snowball sand verbena Abronia fragrans
southwestern waterwort Elatine rubella
spearleaf stonecrop Sedum lanceolatum
spiny phlox Phlox hoodii
spinystar Escobaria vivipara
spotted fritillary Fritillaria atropurpurea
spotted water hemlock Cicuta maculata
spreading dogbane Apocynum androsaemifolium
spreading fleabane Erigeron divergens
Sprengel's sedge Carex sprengelii
spring coralroot Corallorhiza wisteriana
spring forget-me-not Myosotis verna
Standley's goosefoot Chenopodium standleyanum
starry false lily of the valley Maianthemum stellatum
stemless four-nerve daisy Tetraneuris acaulis
stemless Townsend daisy Townsendia exscapa
stiff sunflower Helianthus pauciflorus
stiffstem flax Linum rigidum
strict blue-eyed grass Sisyrinchium montanum
summer coralroot Corallorhiza maculata
sweetcicely Osmorhiza berteroi
tall annual willowherb Epilobium brachycarpum
tall blue lettuce Lactuca biennis
tall thimbleweed Anemone virginiana
tarragon Artemisia dracunculus
Texas croton Croton texensis
Texas toadflax Nuttallanthus texanus
threadleaf crowfoot Ranunculus trichophyllus
threenerve goldenrod Solidago velutina
tiny trumpet Collomia linearis
tobacco root Valeriana edulis
tower rockcress Arabis glabra
trailing fleabane Erigeron flagellaris
tree groundpine Lycopodium dendroideum
tumblegrass Schedonnardus paniculatus
twinflower Linnaea borealis
veiny dock Rumex venosus
veiny meadow-rue Thalictrum venulosum
velvetweed Oenothera curtiflora
velvety goldenrod Solidago mollis
Virginia groundcherry Physalis virginiana
Virginia strawberry Fragaria virginiana
warty spurge Euphorbia spathulata
water mudwort Limosella aquatica
water whorlgrass Catabrosa aquatica
wavyleaf thistle Cirsium undulatum
waxflower shinleaf Pyrola elliptica
western marsh cudweed Gnaphalium palustre
western poison ivy Toxicodendron rydbergii
western rattlesnake plantain Goodyera oblongifolia
western rockjasmine Androsace occidentalis
western tansymustard Descurainia pinnata
white heath aster Symphyotrichum ericoides
white prairie aster Symphyotrichum falcatum
white violet Viola renifolia
whitest evening primrose Oenothera albicaulis
whorled milkwort Polygala verticillata
wild cucumber Echinocystis lobata
winged lythrum Lythrum alatum
witchgrass Panicum capillare
wood bluegrass Poa nemoralis
wood lily Lilium philadelphicum
woodbine Parthenocissus vitacea
woodland draba Draba nemorosa
woodland pinedrops Pterospora andromedea
woolly cinquefoil Potentilla hippiana
woolly sedge Carex pellita
yellow avens Geum aleppicum

Also listed as native and introduced here 5

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
biennial wormwoodArtemisia biennis
common reedPhragmites australis
hedge false bindweedCalystegia sepium
Kentucky bluegrassPoa pratensis

Compared with Wyoming

The typical county is the median of the 23 Wyoming 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, Crook County and Wyoming
Measure	Crook County	Typical county	Statewide
Native species	622	414	1,060
Garden-ready natives	308	243	576
Tree	36	—	69
Shrub	45	—	89
Wildflower (forb)	366	—	606
Grass or grass-like	145	—	242
Vine	12	—	17
Fern	18	—	37

Neighboring counties

Counties that share a ZIP code with Crook County.

Butte County, SD 64 garden-ready
Campbell County, WY 207 garden-ready
Weston County, WY 232 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: Crook County (county FIPS 56011), Wyoming. 622 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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