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Native plants · Montana

Native plants of Powder River County

193 plant species are recorded as native to Montana in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Powder River County by USDA PLANTS. 115 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 2 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Powder River County, Montana

Native species
193 Typical Montana county: 161 (median of 56 counties)
Garden-ready natives
115 Typical Montana county: 104
Share by type (all 193 native species)
Percent of the 193 native species in each growth type
Tree 9% (17)
Shrub 13% (25)
Wildflower (forb) 60% (115)
Grass or grass-like 17% (32)
Vine <1% (1)
Fern 2% (3)

Wildflowers make up the largest share of the native list (60%), followed by grasses and grass-like plants (17%).

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

Cold hardiness is estimated from each plant’s PLANTS minimum temperature. How we estimate it.

Garden-ready natives 115

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

Garden-ready native plants of Powder River County, Montana
PlantType HeightLight Water useHardy to
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 vetch Vicia americana Vine 1.3 ft Sun Low Zone 3b
big sagebrush Artemisia tridentata Tree 4 ft Sun Medium Zone 3a
blanketflower Gaillardia aristata Wildflower (forb) 2 ft Sun Medium Zone 4a
Blue Mountain buckwheat Eriogonum strictum Wildflower (forb) 2.2 ft Sun Low Zone 5a
bluebunch wheatgrass Pseudoroegneria spicata Grass or grass-like 3 ft Sun Low Zone 3b
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
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
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
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
common juniper Juniperus communis Tree 10 ft Sun Low Zone 3a
common snowberry Symphoricarpos albus Shrub 3 ft Sun Medium Zone 3b
common spikerush Eleocharis palustris Grass or grass-like 1.3 ft Sun High Zone 3b
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
dotted blazing star Liatris punctata Wildflower (forb) 2 ft Sun Medium Zone 3a
downy paintedcup Castilleja sessiliflora Wildflower (forb) 1.3 ft Sun Low Zone 3b
eastern cottonwood Populus deltoides Tree 190 ft Sun High Zone 3a
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
foothill arnica Arnica fulgens Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4b
fowl bluegrass Poa palustris Grass or grass-like 4 ft Sun–part shade Medium Zone 3b
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 currant Ribes aureum Shrub 10 ft Sun–part shade Low Zone 3b
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
hairy false goldenaster Heterotheca villosa Wildflower (forb) 3 ft Sun Low Zone 4a
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
Indian ricegrass Achnatherum hymenoides Grass or grass-like 2 ft Sun Low Zone 3a
kinnikinnick Arctostaphylos uva-ursi Shrub 6 in Sun–part shade Low Zone 4a
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
Lewis flax Linum lewisii Wildflower (forb) 2.5 ft Sun Medium Zone 3b
meadow barley Hordeum brachyantherum Grass or grass-like 2 ft Sun Medium Zone 3a
Missouri goldenrod Solidago missouriensis Wildflower (forb) 3 ft Sun–part shade Low Zone 3b
narrowleaf cottonwood Populus angustifolia Tree 60 ft Sun High Zone 4b
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
nineleaf biscuitroot Lomatium triternatum Wildflower (forb) 2.2 ft Sun–part shade Medium Zone 4a
northern bedstraw Galium boreale Wildflower (forb) 3 ft Sun–part shade Medium Zone 4a
Nuttall's povertyweed Monolepis nuttalliana Wildflower (forb) 10 in Sun Medium Zone 12a
old man's whiskers Geum triflorum Wildflower (forb) 1.5 ft Sun–part shade 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
plains pricklypear Opuntia polyacantha Shrub 2 ft Sun Low Zone 4b
ponderosa pine Pinus ponderosa Tree 223 ft Sun Medium Zone 3b
prairie cordgrass Spartina pectinata Grass or grass-like 8 ft Sun High Zone 3b
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
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
reed canarygrass Phalaris arundinacea Grass or grass-like 5 ft Sun High Zone 3b
Rocky Mountain beeplant Cleome serrulata Wildflower (forb) 3 ft Sun–part shade Medium Zone 12b
Rocky Mountain juniper Juniperus scopulorum Tree 50 ft Sun Low 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
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
sanddune wallflower Erysimum capitatum Wildflower (forb) 2.5 ft Sun Medium Zone 4b
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
shadscale saltbush Atriplex confertifolia Shrub 3 ft Sun Medium 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
silver buffaloberry Shepherdia argentea Tree 18 ft Sun–part shade Medium Zone 3b
silver sagebrush Artemisia cana Shrub 5 ft Sun Low Zone 3a
silverweed cinquefoil Argentina anserina Wildflower (forb) 6 in Shade-tolerant High Zone 5a
skunkbush sumac Rhus trilobata Shrub 4 ft Sun–part shade Low Zone 2a
slender wheatgrass Elymus trachycaulus Grass or grass-like 3 ft Sun Medium Zone 3b
smooth horsetail Equisetum laevigatum Fern 5 ft Sun Low Zone 3b
soapweed yucca Yucca glauca Shrub 1 ft Sun Low Zone 4b
softstem bulrush Schoenoplectus tabernaemontani Grass or grass-like 9 ft Sun High Zone 3b
squirreltail Elymus elymoides Grass or grass-like 1.5 ft Sun Low Zone 3a
sticky cinquefoil Potentilla glandulosa Wildflower (forb) 1.5 ft Sun–part shade Low Zone 4a
stiff goldenrod Oligoneuron rigidum Wildflower (forb) 3.6 ft Sun–part shade Medium Zone 3a
tall cinquefoil Potentilla arguta Wildflower (forb) 3 ft Sun–part shade Medium Zone 3b
tanseyleaf tansyaster Machaeranthera tanacetifolia Wildflower (forb) 2 ft Sun Medium Zone 4a
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
thimbleberry Rubus parviflorus Shrub 4 ft Sun–part shade High Zone 4b
threadleaf sedge Carex filifolia Grass or grass-like 1.2 ft Sun Low Zone 3b
thrift mock goldenweed Stenotus armerioides Wildflower (forb) 1 ft Sun Low Zone 5a
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
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
western snowberry Symphoricarpos occidentalis Shrub 3 ft Sun–part shade Low Zone 3b
western water hemlock Cicuta douglasii Wildflower (forb) 6 ft Sun High Zone 4b
western wheatgrass Pascopyrum smithii Grass or grass-like 2 ft Sun Medium Zone 3a
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
wild bergamot Monarda fistulosa Wildflower (forb) 4.9 ft Sun–part shade High Zone 4a
winterfat Krascheninnikovia lanata Shrub 2 ft Sun Low Zone 2a
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 fritillary Fritillaria pudica Wildflower (forb) 1 ft Sun–part shade Medium Zone 12a
yellow willow Salix lutea Tree 16 ft Sun–part shade High Zone 3a

Other native species recorded here 78

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.

  • annual buckwheat Eriogonum annuum
  • aridland goosefoot Chenopodium desiccatum
  • Aunt Lucy Ellisia nyctelea
  • bastard toadflax Comandra umbellata
  • bigbract verbena Verbena bracteata
  • bluntleaf yellowcress Rorippa curvipes
  • bushy knotweed Polygonum ramosissimum
  • clammy groundcherry Physalis heterophylla
  • clustered broomrape Orobanche fasciculata
  • common starlily Leucocrinum montanum
  • Cuman ragweed Ambrosia psilostachya
  • curlycup gumweed Grindelia squarrosa
  • cutleaf nightshade Solanum triflorum
  • desert biscuitroot Lomatium foeniculaceum
  • desert princesplume Stanleya pinnata
  • Drummond's false pennyroyal Hedeoma drummondii
  • fineleaf hymenopappus Hymenopappus filifolius
  • flatspine stickseed Lappula occidentalis
  • fleshy hawthorn Crataegus succulenta
  • Flodman's thistle Cirsium flodmanii
  • foothill bladderpod Lesquerella ludoviciana
  • foxtail barley Hordeum jubatum
  • great ragweed Ambrosia trifida
  • green comet milkweed Asclepias viridiflora
  • groundplum milkvetch Astragalus crassicarpus
  • hairy evening primrose Oenothera villosa
  • Jersey tea Ceanothus herbaceus
  • large Indian breadroot Pediomelum esculentum
  • Laxmann's milkvetch Astragalus laxmannii
  • lilac penstemon Penstemon gracilis
  • long-stolon sedge Carex inops
  • meadow deathcamas Zigadenus venenosus
  • narrowleaf purple coneflower Echinacea angustifolia
  • narrowleaf stoneseed Lithospermum incisum
  • Northern Idaho biscuitroot Lomatium orientale
  • Oregon cliff fern Woodsia oregana
  • Paradox cinquefoil Potentilla paradoxa
  • povertyweed Iva axillaris
  • prairie false dandelion Nothocalais cuspidata
  • prairie groundsel Packera plattensis
  • prairie rose Rosa arkansana
  • prairie spiderwort Tradescantia occidentalis
  • prairie sunflower Helianthus petiolaris
  • Pursh seepweed Suaeda calceoliformis
  • ribseed sandmat Chamaesyce glyptosperma
  • rosy pussytoes Antennaria rosea
  • rough false pennyroyal Hedeoma hispida
  • rush skeletonplant Lygodesmia juncea
  • rusty lupine Lupinus pusillus
  • scarlet beeblossom Oenothera suffrutescens
  • scrambled eggs Corydalis aurea
  • shaggy dwarf morning-glory Evolvulus nuttallianus
  • shaggy fleabane Erigeron pumilus
  • shy wallflower Erysimum inconspicuum
  • silverleaf Indian breadroot Pediomelum argophyllum
  • sixweeks fescue Vulpia octoflora
  • slender phlox Microsteris gracilis
  • slimpod Venus' looking-glass Triodanis leptocarpa
  • small-leaf pussytoes Antennaria parvifolia
  • spinystar Escobaria vivipara
  • spreading dogbane Apocynum androsaemifolium
  • Sprengel's sedge Carex sprengelii
  • starry false lily of the valley Maianthemum stellatum
  • stemless Townsend daisy Townsendia exscapa
  • strict blue-eyed grass Sisyrinchium montanum
  • tiny trumpet Collomia linearis
  • tumblegrass Schedonnardus paniculatus
  • twinflower Linnaea borealis
  • veiny meadow-rue Thalictrum venulosum
  • velvetweed Oenothera curtiflora
  • warty spurge Euphorbia spathulata
  • wavyleaf thistle Cirsium undulatum
  • western tansymustard Descurainia pinnata
  • whitest evening primrose Oenothera albicaulis
  • wood lily Lilium philadelphicum
  • woodland draba Draba nemorosa
  • woodland pinedrops Pterospora andromedea
  • woolly sedge Carex pellita
Also listed as native and introduced here 2

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.

Compared with Montana

The typical county is the median of the 56 Montana 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, Powder River County and Montana
MeasurePowder River CountyTypical countyStatewide
Native species 193 161 1,086
Garden-ready natives 115 104 606
Tree 17 — 71
Shrub 25 — 98
Wildflower (forb) 115 — 609
Grass or grass-like 32 — 246
Vine 1 — 18
Fern 3 — 44

Neighboring counties

Counties that share a ZIP code with Powder River County.

Look up another ZIP

Matches your ZIP to the county it mostly lies in, then lists the plants recorded as native to your state (Kew’s World Checklist and USDA PLANTS) and recorded in that county by USDA PLANTS.

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
Powder River County (county FIPS 30075), Montana. 193 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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