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Native plants · Idaho

Native plants of Caribou County

292 plant species are recorded as native to Idaho in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Caribou County by USDA PLANTS. 202 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 1 more species is listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Caribou County, Idaho

Native species
292 Typical Idaho county: 302 (median of 44 counties)
Garden-ready natives
202 Typical Idaho county: 211
Share by type (all 292 native species)
Percent of the 292 native species in each growth type
Tree 9% (25)
Shrub 11% (32)
Wildflower (forb) 61% (177)
Grass or grass-like 18% (53)
Vine <1% (2)
Fern 1% (3)

Wildflowers make up the largest share of the native list (61%), followed by grasses and grass-like plants (18%).

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 5a to 5b (2023 map).

The native plant list

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

Garden-ready natives 202

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

Garden-ready native plants of Caribou County, Idaho
PlantType HeightLight Water useHardy to
alderleaf buckthorn Rhamnus alnifolia Shrub 3 ft Shade-tolerant High Zone 4a
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 leafybract aster Symphyotrichum foliaceum Wildflower (forb) 2 ft Sun Medium Zone 3b
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 speedwell Veronica americana Wildflower (forb) 10 in Shade-tolerant High Zone 3b
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
ballhead waterleaf Hydrophyllum capitatum Wildflower (forb) 1 ft Shade-tolerant High Zone 4b
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
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
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
Booth's willow Salix boothii Shrub 24 ft Shade-tolerant High Zone 8b
broadfruit bur-reed Sparganium eurycarpum Wildflower (forb) 4.9 ft Sun–part shade High Zone 4a
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
California false hellebore Veratrum californicum Wildflower (forb) 6 ft Shade-tolerant High Zone 3b
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
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
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
common cowparsnip Heracleum maximum Wildflower (forb) 8 ft 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 sneezeweed Helenium autumnale Wildflower (forb) 4.9 ft Sun Medium Zone 3a
creeping barberry Mahonia repens Shrub 2 ft Shade-tolerant Medium Zone 5a
curl-leaf mountain mahogany Cercocarpus ledifolius Tree 20 ft Sun–part shade Low Zone 2b
cursed buttercup Ranunculus sceleratus Wildflower (forb) 2 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
doublehorn calicoflower Downingia bicornuta Wildflower (forb) 10 in Sun Medium Zone 12a
Douglas-fir Pseudotsuga menziesii Tree 200 ft Sun–part shade Medium Zone 4a
Douglas' dustymaiden Chaenactis douglasii Wildflower (forb) 1.6 ft Sun–part shade Low Zone 3b
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 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 rose Rosa gymnocarpa Shrub 3 ft Shade-tolerant Medium Zone 5b
Eaton's fleabane Erigeron eatonii Wildflower (forb) 10 in Sun Low Zone 5b
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
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
freckled milkvetch Astragalus lentiginosus Shrub 1.4 ft Sun Low Zone 4b
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 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
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
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
heartleaf arnica Arnica cordifolia Wildflower (forb) 1.5 ft Shade-tolerant High Zone 4b
hooded lady's tresses Spiranthes romanzoffiana Wildflower (forb) 2.5 ft Sun–part shade High Zone 3b
Idaho bentgrass Agrostis idahoensis Grass or grass-like 1.4 ft Sun Medium 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
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
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
limber pine Pinus flexilis Tree 66 ft Sun Low Zone 3a
little sagebrush Artemisia arbuscula Shrub 2 ft Sun Low Zone 3a
littleleaf pussytoes Antennaria microphylla Wildflower (forb) 1 ft Sun Low Zone 3b
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
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 grass of Parnassus Parnassia palustris Wildflower (forb) 2.2 ft Sun High Zone 3b
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
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
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
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
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
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
pale agoseris Agoseris glauca Shrub 1 ft Sun Medium Zone 4a
pale evening primrose Oenothera pallida Wildflower (forb) 2 ft Sun Low Zone 3b
pearly pussytoes Antennaria anaphaloides Wildflower (forb) 2.5 ft Sun–part shade Medium Zone 4a
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
purple milkvetch Astragalus agrestis Wildflower (forb) 1 ft Sun Low Zone 4a
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
rayless arnica Arnica ×diversifolia Wildflower (forb) 1.3 ft Sun–part shade High Zone 5a
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
red goosefoot Chenopodium rubrum Wildflower (forb) 3 ft Sun High Zone 12b
red swampfire Salicornia rubra Wildflower (forb) 1 ft Sun Medium Zone 12b
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 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
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
sago pondweed Stuckenia pectinata Wildflower (forb) — Sun High 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
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
sea milkwort Glaux maritima Wildflower (forb) 11 in Sun High Zone 4a
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
shrubby cinquefoil Dasiphora fruticosa Shrub 2.5 ft Sun–part shade Low Zone 4b
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
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 floating mannagrass Glyceria borealis Grass or grass-like 4.9 ft Sun High Zone 4a
snowbrush ceanothus Ceanothus velutinus Tree 10 ft Sun Medium Zone 5a
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
star duckweed Lemna trisulca Wildflower (forb) 4 in Sun High Zone 3b
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
subalpine fir Abies lasiocarpa Tree 90 ft Shade-tolerant Medium Zone 2a
swordleaf rush Juncus ensifolius Grass or grass-like 2 ft Sun–part shade High Zone 3b
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
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
threepetal bedstraw Galium trifidum Vine 10 in Sun–part shade High 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
tufted hairgrass Deschampsia cespitosa Grass or grass-like 3.4 ft Sun Low Zone 3b
twinberry honeysuckle Lonicera involucrata Shrub 10 ft Shade-tolerant High Zone 3a
twoheaded water-starwort Callitriche heterophylla Wildflower (forb) — Sun High Zone 4a
Utah honeysuckle Lonicera utahensis Shrub 5 ft Shade-tolerant High Zone 5a
Utah serviceberry Amelanchier utahensis Tree 15 ft Sun–part shade Medium Zone 4b
Utah sweetvetch Hedysarum boreale Wildflower (forb) 2 ft Sun Medium 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 birch Betula occidentalis Tree 25 ft Sun–part shade High Zone 1a
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
wavyleaf Indian paintbrush Castilleja applegatei Wildflower (forb) 1.5 ft Sun Low Zone 4b
wax currant Ribes cereum Shrub 3 ft Sun Low Zone 5a
western juniper Juniperus occidentalis Tree 33 ft Sun Low Zone 4a
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 valerian Valeriana occidentalis Wildflower (forb) 3 ft Sun High Zone 4b
white hawkweed Hieracium albiflorum Wildflower (forb) 3 ft Sun–part shade Low Zone 4a
white sagebrush Artemisia ludoviciana Wildflower (forb) 3 ft Sun Low Zone 4a
whitestem gooseberry Ribes inerme Shrub 8 ft Shade-tolerant Medium Zone 4b
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

Other native species recorded here 90

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 sloughgrass Beckmannia syzigachne
  • American yellowrocket Barbarea orthoceras
  • autumn dwarf gentian Gentianella amarella
  • balsam groundsel Packera paupercula
  • bastard toadflax Comandra umbellata
  • bearded flatsedge Cyperus squarrosus
  • beautiful cinquefoil Potentilla pulcherrima
  • Bebb willow Salix bebbiana
  • bitter fleabane Erigeron acris
  • blite goosefoot Chenopodium capitatum
  • bluntleaf sandwort Moehringia lateriflora
  • brittle bladderfern Cystopteris fragilis
  • carelessweed Cyclachaena xanthiifolia
  • clustered broomrape Orobanche fasciculata
  • common bladderwort Utricularia macrorhiza
  • curlycup gumweed Grindelia squarrosa
  • Douglas' knotweed Polygonum douglasii
  • elkweed Frasera speciosa
  • entireleaved thelypody Thelypodium integrifolium
  • falsegold groundsel Packera pseudaurea
  • feathery false lily of the valley Maianthemum racemosum
  • flatspine stickseed Lappula occidentalis
  • floating bur-reed Sparganium fluctuans
  • foxtail barley Hordeum jubatum
  • fragrant bedstraw Galium triflorum
  • Fremont's goosefoot Chenopodium fremontii
  • fringed willowherb Epilobium ciliatum
  • giant red Indian paintbrush Castilleja miniata
  • Gmelin's buttercup Ranunculus gmelinii
  • hairy evening primrose Oenothera villosa
  • hemlock waterparsnip Sium suave
  • hoary tansyaster Machaeranthera canescens
  • hooded coralroot Corallorhiza striata
  • hookedspur violet Viola adunca
  • lanceleaf figwort Scrophularia lanceolata
  • manybranched pepperweed Lepidium ramosissimum
  • manyflower stickseed Hackelia floribunda
  • marsh skullcap Scutellaria galericulata
  • meadow deathcamas Zigadenus venenosus
  • meadow zizia Zizia aptera
  • Menzies' campion Silene menziesii
  • mountain tarweed Madia glomerata
  • narrowleaf goosefoot Chenopodium leptophyllum
  • needleleaf navarretia Navarretia intertexta
  • nodding chickweed Cerastium nutans
  • northern bog violet Viola nephrophylla
  • northern green orchid Platanthera aquilonis
  • northern hollyfern Polystichum lonchitis
  • pinyon goosefoot Chenopodium atrovirens
  • pleated gentian Gentiana affinis
  • pullup muhly Muhlenbergia filiformis
  • pygmyflower rockjasmine Androsace septentrionalis
  • rayless alkali aster Symphyotrichum ciliatum
  • redwool plantain Plantago eriopoda
  • resin birch Betula glandulosa
  • Richardson's pondweed Potamogeton richardsonii
  • rosy pussytoes Antennaria rosea
  • roughfruit fairybells Prosartes trachycarpa
  • scentbottle Platanthera dilatata
  • Scouler's popcornflower Plagiobothrys scouleri
  • scrambled eggs Corydalis aurea
  • shaggy fleabane Erigeron pumilus
  • shortray fleabane Erigeron lonchophyllus
  • shortspike watermilfoil Myriophyllum sibiricum
  • shy wallflower Erysimum inconspicuum
  • slender-spire orchid Piperia unalascensis
  • small pondweed Potamogeton pusillus
  • spearleaf stonecrop Sedum lanceolatum
  • spiny milkvetch Astragalus kentrophyta
  • spiny phlox Phlox hoodii
  • spotted fritillary Fritillaria atropurpurea
  • spring coralroot Corallorhiza wisteriana
  • starry false lily of the valley Maianthemum stellatum
  • stemless four-nerve daisy Tetraneuris acaulis
  • summer coralroot Corallorhiza maculata
  • sweetcicely Osmorhiza berteroi
  • tall annual willowherb Epilobium brachycarpum
  • tarragon Artemisia dracunculus
  • threadleaf crowfoot Ranunculus trichophyllus
  • tiny trumpet Collomia linearis
  • tobacco root Valeriana edulis
  • tower rockcress Arabis glabra
  • water mudwort Limosella aquatica
  • western marsh cudweed Gnaphalium palustre
  • western tansymustard Descurainia pinnata
  • wood bluegrass Poa nemoralis
  • woodland draba Draba nemorosa
  • woodland strawberry Fragaria vesca
  • woolly sedge Carex pellita
  • yellow water buttercup Ranunculus flabellaris
Also listed as native and introduced here 1

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, Caribou County and Idaho
MeasureCaribou CountyTypical countyStatewide
Native species 292 302 975
Garden-ready natives 202 211 591
Tree 25 — 65
Shrub 32 — 97
Wildflower (forb) 177 — 552
Grass or grass-like 53 — 206
Vine 2 — 14
Fern 3 — 41

Neighboring counties

Counties that share a ZIP code with Caribou 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
Caribou County (county FIPS 16029), Idaho. 292 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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