Natives by ZIP

Native plants recorded in your state and county

Native plants · State

Native plants of Idaho

975 species are recorded as native to Idaho in Kew’s World Checklist of Vascular Plants and USDA PLANTS and recorded in the state by USDA PLANTS, 591 of them with growing traits. County lists cover 44 of the state’s 44 counties; the typical county has 302.

State summary · USDA PLANTS and Kew WCVP

Idaho at a glance

Native species statewide
975 Of 2,448 species Kew’s World Checklist records as native to Idaho (before this site’s scope)
Garden-ready natives
591 With PLANTS growing records
Typical county
302 Median native species per county; 211 garden-ready
Share by type (all 975 native species)
Percent of the 975 native species in each growth type
Tree 7% (65)
Shrub 10% (97)
Wildflower (forb) 57% (552)
Grass or grass-like 21% (206)
Vine 1% (14)
Fern 4% (41)

Wildflowers: 552 · grasses and grass-like: 206 · trees: 65 · shrubs: 97 · vines: 14 · ferns: 41.

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.

Native plants by county

44 Idaho counties with PLANTS county records
CountyNative speciesGarden-readyHardiness zones
Ada County 350 242 7a
Adams County 376 266 6a
Bannock County 372 253 5b–6b
Bear Lake County 264 184 5a–5b
Benewah County 203 137 6b
Bingham County 199 137 5b
Blaine County 385 266 5b–6a
Boise County 388 276 6a–7a
Bonner County 472 298 6a–6b
Bonneville County 326 221 5a–6a
Boundary County 305 189 6a–6b
Butte County 303 208 5a
Camas County 164 120 5a–6a
Canyon County 238 157 7a
Caribou County 292 202 5a–5b
Cassia County 395 274 6a–6b
Clark County 327 230 5b
Clearwater County 310 213 6a–7a
Custer County 499 337 5a–5b
Elmore County 419 300 5a–7a
Franklin County 204 142 6a–6b
Fremont County 460 303 4a–5a
Gem County 172 136 7a
Gooding County 195 137 6b–7a
Idaho County 553 385 5b–7a
Jefferson County 105 78 4b–5b
Jerome County 22 14 6b
Kootenai County 405 263 6b
Latah County 379 256 6a–7a
Lemhi County 447 308 5a–6a
Lewis County 71 52 6b
Lincoln County 125 96 6a
Madison County 92 58 5a
Minidoka County 46 35 6a–6b
Nez Perce County 304 218 6b–7b
Oneida County 137 103 6a
Owyhee County 468 326 7a
Payette County 85 66 6b–7a
Power County 154 116 6a
Shoshone County 301 215 6a–6b
Teton County 146 104 5a
Twin Falls County 300 216 6a–7a
Valley County 450 317 5a
Washington County 267 192 6a–7a

Garden-ready natives of Idaho

Statewide list. A species native somewhere in Idaho may not be native in your county: use the county lists above to narrow it.

Tree 61

Shrub 85

Wildflower (forb) 282

Grass or grass-like 148

Vine 5

Fern 10

Also listed as native and introduced here 8

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.

Look up a Idaho 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.

Territories: Puerto Rico · U.S. Virgin Islands

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
Idaho: 975 native species in this site’s scope; county lists for 44 counties.
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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