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Native plants · Idaho

Native plants of Oneida County

137 plant species are recorded as native to Idaho in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Oneida County by USDA PLANTS. 103 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

Oneida County, Idaho

Native species
137 Typical Idaho county: 302 (median of 44 counties)
Garden-ready natives
103 Typical Idaho county: 211
Share by type (all 137 native species)
Percent of the 137 native species in each growth type
Tree 15% (20)
Shrub 14% (19)
Wildflower (forb) 50% (68)
Grass or grass-like 20% (28)
Vine <1% (1)
Fern <1% (1)

Wildflowers make up the largest share of the native list (50%), followed by grasses and grass-like plants (20%).

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 zone 6a (2023 map).

The native plant list

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

Garden-ready natives 103

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

Garden-ready native plants of Oneida County, Idaho
PlantType HeightLight Water useHardy to
alkali sacaton Sporobolus airoides Grass or grass-like 3 ft Sun Low Zone 3b
American licorice Glycyrrhiza lepidota Wildflower (forb) 4 ft Sun–part shade High Zone 3b
ballhead waterleaf Hydrophyllum capitatum Wildflower (forb) 1 ft Shade-tolerant High Zone 4b
beardless wildrye Leymus triticoides Grass or grass-like 3 ft Sun High Zone 3a
big sagebrush Artemisia tridentata Tree 4 ft Sun Medium Zone 3a
bigtooth maple Acer grandidentatum Tree 38 ft Sun–part shade Medium Zone 4a
black hawthorn Crataegus douglasii Tree 15 ft Sun–part shade High Zone 2b
black sagebrush Artemisia nova Shrub 2 ft Sun Low Zone 5a
bluebunch wheatgrass Pseudoroegneria spicata Grass or grass-like 3 ft Sun Low Zone 3b
Booth's willow Salix boothii Shrub 24 ft Shade-tolerant High Zone 8b
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
broom snakeweed Gutierrezia sarothrae Shrub 1.5 ft Sun Medium Zone 3b
bushy bird's beak Cordylanthus ramosus Wildflower (forb) 1 ft Sun–part shade Medium Zone 12b
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
Columbia needlegrass Achnatherum nelsonii Grass or grass-like 3 ft Sun Low Zone 4b
curl-leaf mountain mahogany Cercocarpus ledifolius Tree 20 ft Sun–part shade Low Zone 2b
cutleaf balsamroot Balsamorhiza macrophylla Wildflower (forb) 2 ft Sun–part shade High Zone 5a
Douglas' dustymaiden Chaenactis douglasii Wildflower (forb) 1.6 ft Sun–part shade Low Zone 3b
fernleaf biscuitroot Lomatium dissectum Wildflower (forb) 15 ft Sun–part shade Low Zone 8a
fourwing saltbush Atriplex canescens Shrub 4 ft Sun Medium Zone 3a
freckled milkvetch Astragalus lentiginosus Shrub 1.4 ft Sun Low Zone 4b
Geyer willow Salix geyeriana Tree 15 ft Shade-tolerant High 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 molly Bassia americana Shrub 2 ft Sun Low Zone 4a
heartleaf arnica Arnica cordifolia Wildflower (forb) 1.5 ft Shade-tolerant High Zone 4b
Hooker's balsamroot Balsamorhiza hookeri Wildflower (forb) 1 ft Sun–part shade Medium Zone 5b
largeflower hawksbeard Crepis occidentalis Wildflower (forb) 11 in Sun Low Zone 5a
Letterman's needlegrass Achnatherum lettermanii Grass or grass-like 2 ft Sun Low Zone 4b
Lewis flax Linum lewisii Wildflower (forb) 2.5 ft Sun Medium Zone 3b
longleaf phlox Phlox longifolia Wildflower (forb) 1.2 ft Sun–part shade Low Zone 6a
low pussytoes Antennaria dimorpha Wildflower (forb) 4 in Sun–part shade Low Zone 3b
maiden blue eyed Mary Collinsia parviflora Wildflower (forb) 1 ft Shade-tolerant Medium Zone 4a
mat muhly Muhlenbergia richardsonis Grass or grass-like 6 in Sun High Zone 4b
meadow barley Hordeum brachyantherum Grass or grass-like 2 ft Sun Medium Zone 3a
mountain brome Bromus marginatus Grass or grass-like 4 ft Sun High Zone 4b
mule-ears Wyethia amplexicaulis Wildflower (forb) 2.5 ft Sun Medium Zone 3b
Munro's globemallow Sphaeralcea munroana Wildflower (forb) 2.5 ft Sun Low Zone 4b
muttongrass Poa fendleriana Grass or grass-like 2 ft Sun 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
nodding microseris Microseris nutans Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4b
Nootka rose Rosa nutkana Shrub 10 ft Shade-tolerant High Zone 8a
northwestern Indian paintbrush Castilleja angustifolia Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 4a
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
oneflower helianthella Helianthella uniflora Wildflower (forb) 2 ft Sun–part shade Low Zone 5a
oniongrass Melica bulbosa Grass or grass-like 1.8 ft Sun–part shade Low Zone 3a
pale agoseris Agoseris glauca Shrub 1 ft Sun Medium Zone 4a
pale evening primrose Oenothera pallida Wildflower (forb) 2 ft Sun Low Zone 3b
panicled bulrush Scirpus microcarpus Grass or grass-like 5.5 ft Sun Medium Zone 3b
peachleaf willow Salix amygdaloides Tree 60 ft Sun High Zone 4a
pinegrass Calamagrostis rubescens Grass or grass-like 3 ft Shade-tolerant Medium Zone 4b
plains pricklypear Opuntia polyacantha Shrub 2 ft Sun Low Zone 4b
prairie cordgrass Spartina pectinata Grass or grass-like 8 ft Sun High Zone 3b
purple milkvetch Astragalus agrestis Wildflower (forb) 1 ft Sun Low Zone 4a
red swampfire Salicornia rubra Wildflower (forb) 1 ft Sun Medium Zone 12b
Richardson's geranium Geranium richardsonii Wildflower (forb) 3 ft Sun–part shade 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
Rocky Mountain maple Acer glabrum Tree 30 ft Sun–part shade Low Zone 3a
rubber rabbitbrush Ericameria nauseosa Shrub 4 ft Sun Medium Zone 3b
russet buffaloberry Shepherdia canadensis Shrub 6 ft Sun–part shade Medium Zone 1a
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
Sandberg bluegrass Poa secunda Grass or grass-like 1.4 ft Sun–part shade Low Zone 3b
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
scarlet gilia Ipomopsis aggregata Wildflower (forb) 3 ft Sun Low Zone 5b
sea milkwort Glaux maritima Wildflower (forb) 11 in Sun High Zone 4a
sharpleaf penstemon Penstemon acuminatus Wildflower (forb) 2 ft Sun Low Zone 4a
shortawn foxtail Alopecurus aequalis Grass or grass-like 2.5 ft Sun–part shade High Zone 3b
silky lupine Lupinus sericeus Wildflower (forb) 6 ft Sun Low Zone 4b
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
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 wheatgrass Elymus trachycaulus Grass or grass-like 3 ft Sun Medium Zone 3b
smooth sumac Rhus glabra Tree 12 ft Sun Low Zone 4a
snowbrush ceanothus Ceanothus velutinus Tree 10 ft Sun Medium Zone 5a
spineless horsebrush Tetradymia canescens Shrub 4 ft Sun Low Zone 9a
sticky purple geranium Geranium viscosissimum Wildflower (forb) 3 ft Shade-tolerant Low Zone 6a
sulphur-flower buckwheat Eriogonum umbellatum Shrub 1 ft Sun Low Zone 8a
tailcup lupine Lupinus caudatus Wildflower (forb) 5 ft Sun Low Zone 4b
tapertip hawksbeard Crepis acuminata Wildflower (forb) 3 ft Sun–part shade Low Zone 3b
tapertip onion Allium acuminatum Wildflower (forb) 1 ft Sun Low Zone 4b
thickspike wheatgrass Elymus lanceolatus Grass or grass-like 2.3 ft Sun Low Zone 3b
threetip sagebrush Artemisia tripartita Shrub 4 ft Sun Low Zone 3a
tufted evening primrose Oenothera caespitosa Wildflower (forb) 6 in Sun Low Zone 6a
Utah juniper Juniperus osteosperma Tree 26 ft Sun Low Zone 4b
Utah serviceberry Amelanchier utahensis Tree 15 ft Sun–part shade Medium Zone 4b
Wasatch beardtongue Penstemon cyananthus Wildflower (forb) 2.5 ft Sun Medium Zone 5a
water birch Betula occidentalis Tree 25 ft Sun–part shade High Zone 1a
wavyleaf Indian paintbrush Castilleja applegatei Wildflower (forb) 1.5 ft Sun Low Zone 4b
western needlegrass Achnatherum occidentale Grass or grass-like 2 ft Sun–part shade Low Zone 4b
western stoneseed Lithospermum ruderale Wildflower (forb) 1.5 ft Sun Low Zone 4b
western waterleaf Hydrophyllum occidentale Wildflower (forb) 1.5 ft Shade-tolerant Medium Zone 5b
yellow fritillary Fritillaria pudica Wildflower (forb) 1 ft Sun–part shade Medium Zone 12a
yellow rabbitbrush Chrysothamnus viscidiflorus Shrub 3 ft Sun Low Zone 5a
yellow willow Salix lutea Tree 16 ft Sun–part shade High Zone 3a

Other native species recorded here 34

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.

  • American mannagrass Glyceria grandis
  • Bebb willow Salix bebbiana
  • bigbract verbena Verbena bracteata
  • brook cinquefoil Potentilla rivalis
  • bushy knotweed Polygonum ramosissimum
  • carelessweed Cyclachaena xanthiifolia
  • curlycup gumweed Grindelia squarrosa
  • desert princesplume Stanleya pinnata
  • Douglas' knotweed Polygonum douglasii
  • elkweed Frasera speciosa
  • entireleaved thelypody Thelypodium integrifolium
  • feathery false lily of the valley Maianthemum racemosum
  • foxtail barley Hordeum jubatum
  • hairy evening primrose Oenothera villosa
  • hoary tansyaster Machaeranthera canescens
  • hookedspur violet Viola adunca
  • horned pondweed Zannichellia palustris
  • narrowleaf goosefoot Chenopodium leptophyllum
  • nodding buckwheat Eriogonum cernuum
  • pullup muhly Muhlenbergia filiformis
  • Rocky Mountain rush Juncus saximontanus
  • rough barnyardgrass Echinochloa muricata
  • Scouler's popcornflower Plagiobothrys scouleri
  • slender-spire orchid Piperia unalascensis
  • spiny phlox Phlox hoodii
  • spreading fleabane Erigeron divergens
  • sweetcicely Osmorhiza berteroi
  • tall annual willowherb Epilobium brachycarpum
  • tarragon Artemisia dracunculus
  • variegated scouringrush Equisetum variegatum
  • white violet Viola renifolia
  • wild cucumber Echinocystis lobata
  • witchgrass Panicum capillare
  • woodland strawberry Fragaria vesca
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 Idaho

The typical county is the median of the 44 Idaho 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, Oneida County and Idaho
MeasureOneida CountyTypical countyStatewide
Native species 137 302 975
Garden-ready natives 103 211 591
Tree 20 — 65
Shrub 19 — 97
Wildflower (forb) 68 — 552
Grass or grass-like 28 — 206
Vine 1 — 14
Fern 1 — 41

Neighboring counties

Counties that share a ZIP code with Oneida 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
Oneida County (county FIPS 16071), Idaho. 137 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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