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Native plants · Idaho

Native plants of Fremont County

460 plant species are recorded as native to Idaho in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Fremont County by USDA PLANTS. 303 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 3 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Fremont County, Idaho

Native species
460 Typical Idaho county: 302 (median of 44 counties)
Garden-ready natives
303 Typical Idaho county: 211
Share by type (all 460 native species)
Percent of the 460 native species in each growth type
Tree 6% (29)
Shrub 9% (43)
Wildflower (forb) 60% (276)
Grass or grass-like 22% (100)
Vine <1% (3)
Fern 2% (9)

Wildflowers make up the largest share of the native list (60%), 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 4a 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 303

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

Garden-ready native plants of Fremont County, Idaho
PlantType HeightLight Water useHardy to
alkali buttercup Ranunculus cymbalaria Wildflower (forb) 1 ft Shade-tolerant High Zone 3b
alkali sacaton Sporobolus airoides Grass or grass-like 3 ft Sun Low Zone 3b
alpine bistort Polygonum viviparum Wildflower (forb) 1 ft Sun High Zone 3b
alpine leafybract aster Symphyotrichum foliaceum Wildflower (forb) 2 ft Sun Medium Zone 3b
Alpine Meadow-Foxtail Alopecurus magellanicus Grass or grass-like 6 in Sun–part shade High Zone 4a
alpine mountainsorrel Oxyria digyna Wildflower (forb) 1 ft Sun–part shade Medium Zone 3a
alpine timothy Phleum alpinum Grass or grass-like 1.4 ft Sun–part shade Medium Zone 3a
American bistort Polygonum bistortoides Wildflower (forb) 1.5 ft Sun High Zone 3b
American licorice Glycyrrhiza lepidota Wildflower (forb) 4 ft Sun–part shade High Zone 3b
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
analogue sedge Carex simulata Grass or grass-like 1.5 ft Sun–part shade High Zone 3b
Anderson's larkspur Delphinium andersonii Wildflower (forb) 2 ft Shade-tolerant Low Zone 5b
antelope bitterbrush Purshia tridentata Shrub 6 ft Sun–part shade Low Zone 3b
arrowleaf balsamroot Balsamorhiza sagittata Wildflower (forb) 2 ft Sun–part shade Medium Zone 3b
arrowleaf ragwort Senecio triangularis Wildflower (forb) 4 ft Sun–part shade High Zone 4a
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
ballhead waterleaf Hydrophyllum capitatum Wildflower (forb) 1 ft Shade-tolerant High Zone 4b
Barclay's willow Salix barclayi Tree 15 ft Sun High Zone 3a
basalt milkvetch Astragalus filipes Wildflower (forb) 2 ft Sun Low Zone 5a
basin wildrye Leymus cinereus Grass or grass-like 5 ft Sun High Zone 3a
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 sagebrush Artemisia tridentata Tree 4 ft Sun Medium Zone 3a
bigseed biscuitroot Lomatium macrocarpum Wildflower (forb) 6 in Sun Low Zone 4b
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
blanketflower Gaillardia aristata Wildflower (forb) 2 ft Sun Medium Zone 4a
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
Booth's willow Salix boothii Shrub 24 ft Shade-tolerant High Zone 8b
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
broadleaf arnica Arnica latifolia Wildflower (forb) 2 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
Brown's peony Paeonia brownii Wildflower (forb) 1.5 ft Sun–part shade Medium Zone 5a
buckbean Menyanthes trifoliata Wildflower (forb) 10 in Sun–part shade High Zone 4a
bush penstemon Penstemon fruticosus Shrub 2 ft Sun Medium Zone 6a
bushy bird's beak Cordylanthus ramosus Wildflower (forb) 1 ft Sun–part shade Medium Zone 12b
California oatgrass Danthonia californica Grass or grass-like 2 ft Sun Medium Zone 9a
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
Canadian waterweed Elodea canadensis Wildflower (forb) — Sun High Zone 4a
Carolina foxtail Alopecurus carolinianus Grass or grass-like 1.7 ft Sun Low Zone 3a
Chamisso arnica Arnica chamissonis Wildflower (forb) 2.5 ft Sun–part shade High Zone 4a
chamisso sedge Carex pachystachya Grass or grass-like 3.5 ft Shade-tolerant Medium Zone 3b
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
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
Columbian sedge Carex aperta Grass or grass-like 2 ft Sun High Zone 5b
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 reed Phragmites australis Shrub 13 ft Sun Medium Zone 3b
common selfheal Prunella vulgaris Wildflower (forb) 1.5 ft Sun–part shade Medium Zone 3b
common sneezeweed Helenium autumnale Wildflower (forb) 4.9 ft Sun Medium Zone 3a
common snowberry Symphoricarpos albus Shrub 3 ft Sun Medium Zone 3b
cous biscuitroot Lomatium cous Wildflower (forb) 10 in Sun Low Zone 4b
creeping barberry Mahonia repens Shrub 2 ft Shade-tolerant Medium Zone 5a
curvepod yellowcress Rorippa curvisiliqua Wildflower (forb) 1 ft Shade-tolerant High Zone 12b
cutleaf balsamroot Balsamorhiza macrophylla Wildflower (forb) 2 ft Sun–part shade High Zone 5a
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
diamondleaf willow Salix planifolia Tree 8 ft Sun Medium Zone 3b
Douglas' dustymaiden Chaenactis douglasii Wildflower (forb) 1.6 ft Sun–part shade Low Zone 3b
Douglas' grasswidow Olsynium douglasii Wildflower (forb) 1 ft Sun Medium Zone 5a
Douglas' sedge Carex douglasii Grass or grass-like 1.5 ft Sun Medium Zone 4a
Drummond's rockcress Arabis drummondii Wildflower (forb) 2 ft Sun–part shade Medium Zone 3b
Drummond's rush Juncus drummondii Grass or grass-like 1.5 ft Sun–part shade Medium Zone 3b
Drummond's willow Salix drummondiana Shrub 12 ft Sun–part shade High Zone 4b
dwarf bilberry Vaccinium cespitosum Shrub 1 ft Shade-tolerant High Zone 4a
dwarf purple monkeyflower Mimulus nanus Wildflower (forb) 6 in Sun Low Zone 10b
elephanthead lousewort Pedicularis groenlandica Wildflower (forb) 2.5 ft Sun–part shade High Zone 4a
Engelmann's aster Eucephalus engelmannii Wildflower (forb) 6 ft Shade-tolerant Medium Zone 4a
Eschscholtz's buttercup Ranunculus eschscholtzii Wildflower (forb) 1 ft Sun Medium Zone 4a
fernleaf biscuitroot Lomatium dissectum Wildflower (forb) 15 ft Sun–part shade Low Zone 8a
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
fineleaf pondweed Stuckenia filiformis Wildflower (forb) — Sun High Zone 3b
fireweed Chamerion angustifolium Wildflower (forb) 5.5 ft Sun–part shade High Zone 3b
flat-top pussytoes Antennaria corymbosa Wildflower (forb) 1 ft Shade-tolerant High Zone 5b
foothill arnica Arnica fulgens Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4b
fowl mannagrass Glyceria striata Grass or grass-like 5.7 ft Shade-tolerant Medium Zone 3b
freckled milkvetch Astragalus lentiginosus Shrub 1.4 ft Sun Low Zone 4b
fringed brome Bromus ciliatus Grass or grass-like 4 ft Shade-tolerant Medium Zone 7a
fringed grass of Parnassus Parnassia fimbriata Wildflower (forb) 1.2 ft Sun–part shade High Zone 4b
Geyer willow Salix geyeriana Tree 15 ft Shade-tolerant High Zone 3b
Geyer's sedge Carex geyeri Grass or grass-like 1.5 ft Sun–part shade Low Zone 4b
giant goldenrod Solidago gigantea Wildflower (forb) 8.2 ft Sun–part shade Medium Zone 4a
giant mountain aster Canadanthus modestus Wildflower (forb) 3 ft Sun Medium Zone 3b
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
gooseberry currant Ribes montigenum Shrub 1 ft Sun–part shade Medium Zone 7a
grand fir Abies grandis Tree 150 ft Shade-tolerant Medium Zone 4a
granite prickly phlox Linanthus pungens Wildflower (forb) 2 ft Shade-tolerant Low Zone 4a
gray alder Alnus incana Tree 25 ft Sun–part shade High Zone 4a
Great Basin lupine Lupinus ×alpestris Wildflower (forb) 2.2 ft Sun Low Zone 3b
greater creeping spearwort Ranunculus flammula Wildflower (forb) 1.5 ft Shade-tolerant High Zone 4a
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
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
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
Indianhemp Apocynum cannabinum Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
inland sedge Carex interior Grass or grass-like 1.5 ft Sun–part shade High Zone 3b
King's sandwort Arenaria kingii Wildflower (forb) 8 in Sun Low Zone 4b
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 triteleia Triteleia grandiflora Wildflower (forb) 2 ft Sun–part shade Medium Zone 4a
largeleaf avens Geum macrophyllum Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4a
Lemmon's needlegrass Achnatherum lemmonii Grass or grass-like 3 ft Sun Low Zone 4b
Lewis flax Linum lewisii Wildflower (forb) 2.5 ft Sun Medium Zone 3b
little green sedge Carex viridula Grass or grass-like 1.5 ft Sun High Zone 3b
little sagebrush Artemisia arbuscula Shrub 2 ft Sun Low Zone 3a
little western bittercress Cardamine oligosperma Wildflower (forb) 1.7 ft Shade-tolerant Medium Zone 5a
littleleaf pussytoes Antennaria microphylla Wildflower (forb) 1 ft Sun Low Zone 3b
lodgepole pine Pinus contorta Tree 99 ft Sun Medium Zone 1a
longbeak buttercup Ranunculus longirostris Wildflower (forb) 1 ft Shade-tolerant High Zone 4b
longleaf phlox Phlox longifolia Wildflower (forb) 1.2 ft Sun–part shade Low Zone 6a
longleaf starwort Stellaria longifolia Wildflower (forb) 1.5 ft Shade-tolerant High Zone 3b
longstalk clover Trifolium longipes Wildflower (forb) 6 in Sun–part shade Medium Zone 8a
longstalk starwort Stellaria longipes Wildflower (forb) 11 in Sun–part shade High Zone 4a
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
Lyall's angelica Angelica arguta Wildflower (forb) 6 ft Sun–part shade High Zone 5b
maiden blue eyed Mary Collinsia parviflora Wildflower (forb) 1 ft Shade-tolerant Medium Zone 4a
marsh muhly Muhlenbergia racemosa Grass or grass-like 3 ft Shade-tolerant Medium Zone 3b
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
Mertens' rush Juncus mertensianus Grass or grass-like 11 in Sun–part shade High Zone 4a
Missouri goldenrod Solidago missouriensis Wildflower (forb) 3 ft Sun–part shade Low Zone 3b
mountain brome Bromus marginatus Grass or grass-like 4 ft Sun High Zone 4b
mountain pepperweed Lepidium montanum Wildflower (forb) 10 in Sun–part shade Low Zone 4a
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
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
needle spikerush Eleocharis acicularis Grass or grass-like 8 in Sun Medium Zone 5a
nineleaf biscuitroot Lomatium triternatum Wildflower (forb) 2.2 ft Sun–part shade Medium Zone 4a
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
Nootka rose Rosa nutkana Shrub 10 ft Shade-tolerant High Zone 8a
northern bedstraw Galium boreale Wildflower (forb) 3 ft Sun–part shade Medium Zone 4a
northern black currant Ribes hudsonianum Shrub 5 ft Sun–part shade High Zone 4a
northern singlespike sedge Carex scirpoidea Grass or grass-like 1.5 ft Shade-tolerant Medium Zone 3b
northwestern Indian paintbrush Castilleja angustifolia Wildflower (forb) 2.5 ft Shade-tolerant Medium Zone 4a
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
oneflower helianthella Helianthella uniflora Wildflower (forb) 2 ft Sun–part shade Low Zone 5a
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
pale evening primrose Oenothera pallida Wildflower (forb) 2 ft Sun Low Zone 3b
Parry's rush Juncus parryi Grass or grass-like 1 ft Sun–part shade Low Zone 4a
peachleaf willow Salix amygdaloides Tree 60 ft Sun High Zone 4a
pearly pussytoes Antennaria anaphaloides Wildflower (forb) 2.5 ft Sun–part shade Medium Zone 4a
Pennsylvania buttercup Ranunculus pensylvanicus Wildflower (forb) 3.9 ft Shade-tolerant High Zone 4b
pinegrass Calamagrostis rubescens Grass or grass-like 3 ft Shade-tolerant Medium Zone 4b
pipsissewa Chimaphila umbellata Shrub 1.5 ft Shade-tolerant Low Zone 3b
plains pricklypear Opuntia polyacantha Shrub 2 ft Sun Low Zone 4b
plantainleaf buttercup Ranunculus alismifolius Wildflower (forb) 2 ft Sun–part shade High Zone 4a
poverty rush Juncus tenuis Grass or grass-like 1.5 ft Sun–part shade Medium Zone 3b
prairie fleabane Erigeron strigosus Wildflower (forb) 3 ft Sun Medium Zone 4b
prickly currant Ribes lacustre Shrub 3 ft Shade-tolerant — Zone 1a
purple oniongrass Melica spectabilis Grass or grass-like 2.5 ft Sun–part shade Low 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
Raynolds' sedge Carex raynoldsii Grass or grass-like 2 ft Shade-tolerant Medium Zone 4a
red elderberry Sambucus racemosa Tree 18 ft Sun–part shade High Zone 4a
redosier dogwood Cornus sericea Tree 12 ft Sun High Zone 3b
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 goldenrod Solidago multiradiata Wildflower (forb) 1 ft Sun — Zone 1a
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
Rocky Mountain maple Acer glabrum Tree 30 ft Sun–part shade Low Zone 3a
rough bentgrass Agrostis scabra Grass or grass-like 2.5 ft Sun Medium Zone 3b
roundleaf alumroot Heuchera cylindrica Wildflower (forb) 6 ft Sun–part shade Low Zone 6a
royal penstemon Penstemon speciosus Wildflower (forb) 2.5 ft Sun Low Zone 4a
rubber rabbitbrush Ericameria nauseosa Shrub 4 ft Sun Medium Zone 3b
rush pussytoes Antennaria luzuloides Wildflower (forb) 2 ft Sun Medium Zone 4a
russet buffaloberry Shepherdia canadensis Shrub 6 ft Sun–part shade Medium Zone 1a
Rydberg's penstemon Penstemon rydbergii Wildflower (forb) 3 ft Sun Low Zone 3b
sageleaf willow Salix candida Shrub 6 ft Sun–part shade High Zone 4a
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
scabland penstemon Penstemon deustus Wildflower (forb) 2 ft Sun Low Zone 4a
scarlet gilia Ipomopsis aggregata Wildflower (forb) 3 ft Sun Low Zone 5b
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
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 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
silvery sedge Carex canescens Grass or grass-like 2 ft Sun–part shade High Zone 4a
slender cinquefoil Potentilla gracilis Wildflower (forb) 2.4 ft Sun Low Zone 3a
slender hairgrass Deschampsia elongata Grass or grass-like 3 ft Sun Low Zone 3b
slender wheatgrass Elymus trachycaulus Grass or grass-like 3 ft Sun Medium Zone 3b
slenderbeak sedge Carex athrostachya Grass or grass-like 2 ft Sun–part shade High Zone 4a
slimstem reedgrass Calamagrostis stricta Grass or grass-like 3 ft Sun–part shade High Zone 3a
small camas Camassia quamash Wildflower (forb) 2.3 ft Shade-tolerant High Zone 4b
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
smallflowered woodrush Luzula parviflora Grass or grass-like 2 ft Shade-tolerant High Zone 4a
smallwing sedge Carex microptera Grass or grass-like 2 ft Sun High Zone 4a
smooth horsetail Equisetum laevigatum Fern 5 ft Sun Low Zone 3b
snowbrush ceanothus Ceanothus velutinus Tree 10 ft Sun Medium Zone 5a
softleaf sedge Carex disperma Grass or grass-like 2 ft Sun–part shade High Zone 3b
spearleaf arnica Arnica longifolia Wildflower (forb) 2 ft Shade-tolerant High Zone 4a
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
spineless horsebrush Tetradymia canescens Shrub 4 ft Sun Low Zone 9a
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
sticky cinquefoil Potentilla glandulosa Wildflower (forb) 1.5 ft Sun–part shade Low Zone 4a
sticky currant Ribes viscosissimum Shrub 3.5 ft Sun — Zone 3b
sticky purple geranium Geranium viscosissimum Wildflower (forb) 3 ft Shade-tolerant Low Zone 6a
streambank wild hollyhock Iliamna rivularis Wildflower (forb) 6 ft Sun–part shade Medium Zone 4a
subalpine fir Abies lasiocarpa Tree 90 ft Shade-tolerant Medium Zone 2a
sulphur-flower buckwheat Eriogonum umbellatum Shrub 1 ft Sun Low Zone 8a
swamp smartweed Polygonum hydropiperoides Wildflower (forb) — Sun Medium Zone 10b
swordleaf rush Juncus ensifolius Grass or grass-like 2 ft Sun–part shade High Zone 3b
tailcup lupine Lupinus caudatus Wildflower (forb) 5 ft Sun Low Zone 4b
tall fringed bluebells Mertensia ciliata Wildflower (forb) 2 ft Sun–part shade High Zone 5a
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
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
thickstem aster Eurybia integrifolia Wildflower (forb) 3 ft Sun Low Zone 5a
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
threepetal bedstraw Galium trifidum Vine 10 in Sun–part shade High Zone 3b
threetip sagebrush Artemisia tripartita Shrub 4 ft Sun Low Zone 3a
Thurber's needlegrass Achnatherum thurberianum Grass or grass-like 2 ft Sun Low Zone 5a
timber oatgrass Danthonia intermedia Grass or grass-like 1.5 ft Sun–part shade Low Zone 4a
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
tufted loosestrife Lysimachia thyrsiflora Wildflower (forb) 2 ft Sun–part shade High Zone 4a
twinberry honeysuckle Lonicera involucrata Shrub 10 ft Shade-tolerant High Zone 3a
undergreen willow Salix commutata Shrub 3 ft — — Zone 3b
Utah honeysuckle Lonicera utahensis Shrub 5 ft Shade-tolerant High Zone 5a
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
Wasatch beardtongue Penstemon cyananthus Wildflower (forb) 2.5 ft Sun Medium Zone 5a
water knotweed Polygonum amphibium Wildflower (forb) 1 in Sun High Zone 5a
water sedge Carex aquatilis Grass or grass-like 2.9 ft Sun High Zone 3b
wax currant Ribes cereum Shrub 3 ft Sun Low Zone 5a
western goldentop Euthamia occidentalis Wildflower (forb) 6 ft Sun Medium Zone 4b
western needlegrass Achnatherum occidentale Grass or grass-like 2 ft Sun–part shade Low Zone 4b
western pearly everlasting Anaphalis margaritacea Wildflower (forb) 3 ft Sun–part shade Medium Zone 3a
western polemonium Polemonium occidentale Wildflower (forb) 3 ft Shade-tolerant High Zone 3a
western stoneseed Lithospermum ruderale Wildflower (forb) 1.5 ft Sun Low Zone 4b
western sweetroot Osmorhiza occidentalis Wildflower (forb) 4 ft Shade-tolerant Medium Zone 3b
western valerian Valeriana occidentalis Wildflower (forb) 3 ft Sun High Zone 4b
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
wheat sedge Carex atherodes Grass or grass-like 5 ft Sun High Zone 3b
Whipple's penstemon Penstemon whippleanus Wildflower (forb) 3 ft Sun–part shade Medium Zone 4a
white hawkweed Hieracium albiflorum Wildflower (forb) 3 ft Sun–part shade Low Zone 4a
white marsh marigold Caltha leptosepala Wildflower (forb) 1 ft Sun High Zone 4a
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
white sweetvetch Hedysarum sulphurescens Wildflower (forb) 1.5 ft Sun–part shade Low Zone 4a
whitebark pine Pinus albicaulis Tree 65 ft Sun–part shade Medium Zone 1b
whitestem gooseberry Ribes inerme Shrub 8 ft Shade-tolerant Medium Zone 4b
woodrush sedge Carex luzulina Grass or grass-like 2 ft Sun High Zone 4a
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 evening primrose Oenothera flava Wildflower (forb) 2.5 ft Sun–part shade Medium Zone 4a
yellow fritillary Fritillaria pudica Wildflower (forb) 1 ft Sun–part shade Medium Zone 12a
yellow owl's-clover Orthocarpus luteus Wildflower (forb) 1.5 ft Sun Low Zone 12b
yellow rabbitbrush Chrysothamnus viscidiflorus Shrub 3 ft Sun Low Zone 5a
yellow wildrye Leymus flavescens Grass or grass-like 3 ft Sun Medium Zone 5b
yellow willow Salix lutea Tree 16 ft Sun–part shade High Zone 3a

Other native species recorded here 157

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 bluegrass Poa alpina
  • alpine milkvetch Astragalus alpinus
  • American dragonhead Dracocephalum parviflorum
  • American mannagrass Glyceria grandis
  • American rockbrake Cryptogramma acrostichoides
  • American sloughgrass Beckmannia syzigachne
  • American yellowrocket Barbarea orthoceras
  • Apocynum ×floribundum Apocynum ×floribundum
  • Aunt Lucy Ellisia nyctelea
  • ballhead ipomopsis Ipomopsis congesta
  • bastard toadflax Comandra umbellata
  • bay forget-me-not Myosotis laxa
  • beautiful sandwort Minuartia rubella
  • Bebb willow Salix bebbiana
  • bigbract verbena Verbena bracteata
  • blite goosefoot Chenopodium capitatum
  • bluntleaf sandwort Moehringia lateriflora
  • bluntleaf yellowcress Rorippa curvipes
  • bog yellowcress Rorippa palustris
  • box knotweed Polygonum buxiforme
  • brittle bladderfern Cystopteris fragilis
  • brittle pricklypear Opuntia fragilis
  • bulblet-bearing water hemlock Cicuta bulbifera
  • Buxbaum's sedge Carex buxbaumii
  • Canadian gooseberry Ribes oxyacanthoides
  • carelessweed Cyclachaena xanthiifolia
  • clustered broomrape Orobanche fasciculata
  • common bladderwort Utricularia macrorhiza
  • Crawford's sedge Carex crawfordii
  • curlycup gumweed Grindelia squarrosa
  • cutleaf nightshade Solanum triflorum
  • Douglas' knotweed Polygonum douglasii
  • Drummond's campion Silene drummondii
  • elkweed Frasera speciosa
  • fairy slipper Calypso bulbosa
  • false mermaidweed Floerkea proserpinacoides
  • falsegold groundsel Packera pseudaurea
  • feathery false lily of the valley Maianthemum racemosum
  • flatspine bur ragweed Ambrosia acanthicarpa
  • flatspine stickseed Lappula occidentalis
  • foxtail barley Hordeum jubatum
  • foxtail muhly Muhlenbergia andina
  • fragrant bedstraw Galium triflorum
  • fringed willowherb Epilobium ciliatum
  • giant red Indian paintbrush Castilleja miniata
  • hairy evening primrose Oenothera villosa
  • hairy waterclover Marsilea vestita
  • heartleaf twayblade Listera cordata
  • hemlock waterparsnip Sium suave
  • hoary tansyaster Machaeranthera canescens
  • hooded coralroot Corallorhiza striata
  • hookedspur violet Viola adunca
  • inundated clubmoss Lycopodiella inundata
  • lanceleaf figwort Scrophularia lanceolata
  • leathery knotweed Polygonum achoreum
  • lemon scurfpea Psoralidium lanceolatum
  • lesser spikemoss Selaginella densa
  • Macoun's cudweed Pseudognaphalium macounii
  • manybranched pepperweed Lepidium ramosissimum
  • manyflower stickseed Hackelia floribunda
  • manyflowered monkeyflower Mimulus floribundus
  • marsh skullcap Scutellaria galericulata
  • marsh violet Viola palustris
  • marsh willowherb Epilobium palustre
  • meadow deathcamas Zigadenus venenosus
  • meadow zizia Zizia aptera
  • Menzies' campion Silene menziesii
  • Menzies' fiddleneck Amsinckia menziesii
  • Mojave seablite Suaeda moquinii
  • moss campion Silene acaulis
  • mountain deathcamas Zigadenus elegans
  • mountain tansymustard Descurainia incana
  • mountain tarweed Madia glomerata
  • muskflower Mimulus moschatus
  • narrowleaf goosefoot Chenopodium leptophyllum
  • narrowleaf minerslettuce Montia linearis
  • neckweed Veronica peregrina
  • needleleaf navarretia Navarretia intertexta
  • nodding buckwheat Eriogonum cernuum
  • nodding onion Allium cernuum
  • northern bog aster Symphyotrichum boreale
  • northern green orchid Platanthera aquilonis
  • northern water plantain Alisma triviale
  • Norwegian cinquefoil Potentilla norvegica
  • Oregon cliff fern Woodsia oregana
  • pale false mannagrass Torreyochloa pallida
  • pale spikerush Eleocharis macrostachya
  • Paradox cinquefoil Potentilla paradoxa
  • pitseed goosefoot Chenopodium berlandieri
  • pleated gentian Gentiana affinis
  • povertyweed Iva axillaris
  • pullup muhly Muhlenbergia filiformis
  • purple marshlocks Comarum palustre
  • purple meadow-rue Thalictrum dasycarpum
  • purple reedgrass Calamagrostis purpurascens
  • pygmyflower rockjasmine Androsace septentrionalis
  • rannoch-rush Scheuchzeria palustris
  • redwool plantain Plantago eriopoda
  • resin birch Betula glandulosa
  • Richardson's pondweed Potamogeton richardsonii
  • Rocky Mountain fescue Festuca saximontana
  • Rocky Mountain rush Juncus saximontanus
  • rosy pussytoes Antennaria rosea
  • roughfruit fairybells Prosartes trachycarpa
  • rush skeletonplant Lygodesmia juncea
  • sanddune cryptantha Cryptantha fendleri
  • scentbottle Platanthera dilatata
  • Scouler's popcornflower Plagiobothrys scouleri
  • scrambled eggs Corydalis aurea
  • shaggy fleabane Erigeron pumilus
  • shortbeak sedge Carex brevior
  • shortray fleabane Erigeron lonchophyllus
  • shortspike watermilfoil Myriophyllum sibiricum
  • shy wallflower Erysimum inconspicuum
  • sixweeks fescue Vulpia octoflora
  • skullcap speedwell Veronica scutellata
  • slender-spire orchid Piperia unalascensis
  • spearleaf stonecrop Sedum lanceolatum
  • spiny milkvetch Astragalus kentrophyta
  • spotted fritillary Fritillaria atropurpurea
  • spotted water hemlock Cicuta maculata
  • spreading dogbane Apocynum androsaemifolium
  • spreading fleabane Erigeron divergens
  • spring coralroot Corallorhiza wisteriana
  • starry false lily of the valley Maianthemum stellatum
  • strict blue-eyed grass Sisyrinchium montanum
  • summer coralroot Corallorhiza maculata
  • swamp verbena Verbena hastata
  • swaying bulrush Schoenoplectus subterminalis
  • sweetcicely Osmorhiza berteroi
  • tall annual willowherb Epilobium brachycarpum
  • tarragon Artemisia dracunculus
  • thinleaf cottonsedge Eriophorum viridicarinatum
  • threadleaf crowfoot Ranunculus trichophyllus
  • tiny trumpet Collomia linearis
  • tobacco root Valeriana edulis
  • tower rockcress Arabis glabra
  • twoleaf waterweed Elodea bifoliata
  • veiny dock Rumex venosus
  • veiny meadow-rue Thalictrum venulosum
  • Virginia pepperweed Lepidium virginicum
  • Virginia strawberry Fragaria virginiana
  • water mudwort Limosella aquatica
  • water whorlgrass Catabrosa aquatica
  • wavyleaf thistle Cirsium undulatum
  • western marsh cudweed Gnaphalium palustre
  • western tansymustard Descurainia pinnata
  • whitestem blazingstar Mentzelia albicaulis
  • witchgrass Panicum capillare
  • wood bluegrass Poa nemoralis
  • woodland draba Draba nemorosa
  • woodland pinedrops Pterospora andromedea
  • woodland strawberry Fragaria vesca
  • woolly sedge Carex pellita
  • woollyfruit sedge Carex lasiocarpa
  • Wright's cudweed Pseudognaphalium canescens
  • yellow coralroot Corallorhiza trifida
Also listed as native and introduced here 3

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.

  • biennial wormwoodArtemisia biennis
  • claspleaf twistedstalkStreptopus amplexifolius
  • Kentucky bluegrassPoa pratensis

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, Fremont County and Idaho
MeasureFremont CountyTypical countyStatewide
Native species 460 302 975
Garden-ready natives 303 211 591
Tree 29 — 65
Shrub 43 — 97
Wildflower (forb) 276 — 552
Grass or grass-like 100 — 206
Vine 3 — 14
Fern 9 — 41

Neighboring counties

Counties that share a ZIP code with Fremont 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
Fremont County (county FIPS 16043), Idaho. 460 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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