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Native plants · Idaho

Native plants of Boundary County

305 plant species are recorded as native to Idaho in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Boundary County by USDA PLANTS. 189 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 4 more species are listed as both native and introduced and kept in a separate section.

County summary · USDA PLANTS and Kew WCVP

Boundary County, Idaho

Native species
305 Typical Idaho county: 302 (median of 44 counties)
Garden-ready natives
189 Typical Idaho county: 211
Share by type (all 305 native species)
Percent of the 305 native species in each growth type
Tree 11% (33)
Shrub 11% (35)
Wildflower (forb) 48% (145)
Grass or grass-like 22% (67)
Vine 1% (4)
Fern 7% (21)

Wildflowers make up the largest share of the native list (48%), 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 6a to 6b (2023 map).

The native plant list

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

Garden-ready natives 189

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

Garden-ready native plants of Boundary County, Idaho
PlantType HeightLight Water useHardy to
alkali buttercup Ranunculus cymbalaria Wildflower (forb) 1 ft Shade-tolerant High Zone 3b
alpine laurel Kalmia microphylla Shrub 1 ft Shade-tolerant Medium Zone 4b
alpine mountainsorrel Oxyria digyna Wildflower (forb) 1 ft Sun–part shade Medium Zone 3a
American alpine speedwell Veronica wormskjoldii Wildflower (forb) 1 ft Sun–part shade High Zone 4b
American bistort Polygonum bistortoides Wildflower (forb) 1.5 ft Sun High Zone 3b
American red raspberry Rubus idaeus Shrub 6 ft Shade-tolerant — Zone 1a
American speedwell Veronica americana Wildflower (forb) 10 in Shade-tolerant High Zone 3b
American water horehound Lycopus americanus Wildflower (forb) 1.8 ft Shade-tolerant High Zone 3b
arctic sweet coltsfoot Petasites frigidus Wildflower (forb) 10 in Sun–part shade High 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
beaked hazelnut Corylus cornuta Tree 15 ft Shade-tolerant Medium Zone 2b
bitter cherry Prunus emarginata Tree 80 ft Sun Medium Zone 5a
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
bog birch Betula pumila Shrub 20 ft Sun Medium Zone 3b
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
bristlystalked sedge Carex leptalea Grass or grass-like 1.5 ft Shade-tolerant High Zone 4a
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
buckbean Menyanthes trifoliata Wildflower (forb) 10 in Sun–part shade High Zone 4a
bunchberry dogwood Cornus canadensis Shrub 6 in Shade-tolerant High Zone 4b
bush penstemon Penstemon fruticosus Shrub 2 ft Sun Medium Zone 6a
Canada goldenrod Solidago canadensis Wildflower (forb) 3.5 ft Sun 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
Cascade azalea Rhododendron albiflorum Shrub 6 ft Sun–part shade High Zone 8a
Cascara buckthorn Frangula purshiana Tree 35 ft Shade-tolerant Medium Zone 7a
chokecherry Prunus virginiana Tree 25 ft Sun Medium Zone 3a
Columbia brome Bromus vulgaris Grass or grass-like 1 ft Shade-tolerant Low Zone 5a
common beargrass Xerophyllum tenax Wildflower (forb) 5 ft Sun–part shade Low Zone 8a
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 rush Juncus effusus Grass or grass-like 6.6 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
coon's tail Ceratophyllum demersum Wildflower (forb) — Sun–part shade High Zone 3b
creeping snowberry Gaultheria hispidula Shrub 6 in Shade-tolerant Medium Zone 4b
crested woodfern Dryopteris cristata Fern 1.6 ft Shade-tolerant High Zone 4a
cutleaf daisy Erigeron compositus Wildflower (forb) 1 ft Sun Low Zone 4a
deer fern Blechnum spicant Fern 3.5 ft Sun–part shade High Zone 6b
Douglas aster Symphyotrichum subspicatum Wildflower (forb) 4 in Sun–part shade High Zone 6b
drooping woodreed Cinna latifolia Grass or grass-like 4.5 ft Sun–part shade High Zone 3b
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 rose Rosa gymnocarpa Shrub 3 ft Shade-tolerant Medium Zone 5b
elephanthead lousewort Pedicularis groenlandica Wildflower (forb) 2.5 ft Sun–part shade High Zone 4a
Engelmann spruce Picea engelmannii Tree 120 ft Shade-tolerant Medium Zone 2a
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
field horsetail Equisetum arvense Fern 11 in Sun–part shade High Zone 3a
floating pondweed Potamogeton natans Wildflower (forb) — Sun High Zone 3b
fowl mannagrass Glyceria striata Grass or grass-like 5.7 ft Shade-tolerant Medium Zone 3b
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'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
glaucus willowherb Epilobium glaberrimum Wildflower (forb) 2 ft Shade-tolerant Medium Zone 6b
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
gray alder Alnus incana Tree 25 ft Sun–part shade High Zone 4a
green alder Alnus viridis Tree 10 ft Sun–part shade High Zone 1a
Greene's mountain ash Sorbus scopulina Tree 12 ft Sun–part shade Medium Zone 7a
greenleaf fescue Festuca viridula Grass or grass-like 2.5 ft Sun–part shade Medium Zone 4a
hairy arnica Arnica mollis Wildflower (forb) 2 ft Sun–part shade High Zone 4a
hairy sedge Carex lacustris Grass or grass-like 5 ft Shade-tolerant High Zone 4b
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
harsh Indian paintbrush Castilleja hispida Wildflower (forb) 1.5 ft Sun Low Zone 5a
hollyleaved barberry Mahonia aquifolium Shrub 8 ft Shade-tolerant Low Zone 3a
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
inland sedge Carex interior Grass or grass-like 1.5 ft Sun–part shade High Zone 3b
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
lanceleaf grapefern Botrychium lanceolatum Fern 11 in Shade-tolerant 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
lesser bladderwort Utricularia minor Wildflower (forb) 2 in Sun High Zone 3a
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
Lewis' mock orange Philadelphus lewisii Shrub 12 ft Sun Low Zone 8a
little green sedge Carex viridula Grass or grass-like 1.5 ft Sun High Zone 3b
littleleaf buttercup Ranunculus abortivus Wildflower (forb) 2.8 ft Shade-tolerant Medium Zone 3a
lodgepole pine Pinus contorta Tree 99 ft Sun Medium Zone 1a
longhair sedge Carex comosa Grass or grass-like 5 ft Sun–part shade High Zone 4b
Lyall's angelica Angelica arguta Wildflower (forb) 6 ft Sun–part shade High Zone 5b
Lyall's beardtongue Penstemon lyallii Wildflower (forb) 2.5 ft Sun Medium Zone 5a
MacKenzie's willow Salix prolixa Tree 45 ft Sun Low Zone 2a
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
mountain sedge Carex scopulorum Grass or grass-like 1.3 ft Sun–part shade High Zone 3b
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
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
nodding waternymph Najas flexilis Wildflower (forb) 2.5 ft Sun–part shade High Zone 12a
Nootka rose Rosa nutkana Shrub 10 ft Shade-tolerant High Zone 8a
Nuttall's sunflower Helianthus nuttallii Wildflower (forb) 10 ft Sun Medium Zone 3b
oceanspray Holodiscus discolor Shrub 12 ft Sun High Zone 8a
oval-leaf blueberry Vaccinium ovalifolium Shrub 8 ft Sun–part shade Medium Zone 4a
paper birch Betula papyrifera Tree 70 ft Sun High Zone 1a
Parry's rush Juncus parryi Grass or grass-like 1 ft Sun–part shade Low 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
Philadelphia fleabane Erigeron philadelphicus Wildflower (forb) 2.8 ft Sun–part shade Medium Zone 4b
pinkfairies Clarkia pulchella Wildflower (forb) 2 ft Sun–part shade Medium Zone 12a
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
rattlesnake fern Botrychium virginianum Fern 1.4 ft Shade-tolerant Medium Zone 3b
rayless arnica Arnica ×diversifolia Wildflower (forb) 1.3 ft Sun–part shade High Zone 5a
red alder Alnus rubra Tree 90 ft Sun High Zone 5a
red elderberry Sambucus racemosa Tree 18 ft Sun–part shade High Zone 4a
redosier dogwood Cornus sericea Tree 12 ft Sun High Zone 3b
redstem ceanothus Ceanothus sanguineus Shrub 10 ft Sun–part shade High Zone 6a
Robbins' pondweed Potamogeton robbinsii Wildflower (forb) — Sun High Zone 3b
Rocky Mountain goldenrod Solidago multiradiata Wildflower (forb) 1 ft Sun — Zone 1a
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
rose spirea Spiraea douglasii Shrub 7 ft Sun Low Zone 5a
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
russet buffaloberry Shepherdia canadensis Shrub 6 ft Sun–part shade Medium Zone 1a
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
Saskatoon serviceberry Amelanchier alnifolia Tree 15 ft Sun–part shade Medium Zone 1a
Scouler's willow Salix scouleriana Tree 50 ft Sun–part shade High Zone 6a
Scouler's woollyweed Hieracium scouleri Wildflower (forb) 2 ft Sun Medium Zone 4a
seep monkeyflower Mimulus guttatus Wildflower (forb) 2.5 ft Shade-tolerant High Zone 3b
silky lupine Lupinus sericeus Wildflower (forb) 6 ft Sun Low Zone 4b
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
Sitka willow Salix sitchensis Tree 23 ft Sun High Zone 5b
slimstem reedgrass Calamagrostis stricta Grass or grass-like 3 ft Sun–part shade High Zone 3a
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 blue aster Symphyotrichum laeve Wildflower (forb) 4 ft Sun Medium Zone 3a
snowbrush ceanothus Ceanothus velutinus Tree 10 ft Sun Medium Zone 5a
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
spiked woodrush Luzula spicata Grass or grass-like 1.3 ft Shade-tolerant High Zone 4a
squashberry Viburnum edule Shrub 2 ft Shade-tolerant — Zone 1a
sticky currant Ribes viscosissimum Shrub 3.5 ft Sun — Zone 3b
stiff clubmoss Lycopodium annotinum Fern 1 ft Shade-tolerant High Zone 3a
subalpine larch Larix lyallii Tree 40 ft Sun Low Zone 1b
swordleaf rush Juncus ensifolius Grass or grass-like 2 ft Sun–part shade High Zone 3b
tall trisetum Trisetum canescens Grass or grass-like 3.5 ft Sun–part shade Medium Zone 4a
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
three-way sedge Dulichium arundinaceum Grass or grass-like 2.6 ft Sun–part shade High Zone 3b
threepetal bedstraw Galium trifidum Vine 10 in Sun–part shade High Zone 3b
timber oatgrass Danthonia intermedia Grass or grass-like 1.5 ft Sun–part shade Low Zone 4a
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
undergreen willow Salix commutata Shrub 3 ft — — Zone 3b
Utah honeysuckle Lonicera utahensis Shrub 5 ft Shade-tolerant High Zone 5a
variableleaf pondweed Potamogeton gramineus Wildflower (forb) — Sun High Zone 3b
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
western fescue Festuca occidentalis Grass or grass-like 3 ft Shade-tolerant Low Zone 3a
western mountain ash Sorbus sitchensis Tree 15 ft Sun Medium Zone 4b
western pearly everlasting Anaphalis margaritacea Wildflower (forb) 3 ft Sun–part shade Medium Zone 3a
western redcedar Thuja plicata Tree 150 ft Shade-tolerant Medium Zone 4a
western white clematis Clematis ligusticifolia Vine 1 ft Sun–part shade Medium Zone 3b
wheat sedge Carex atherodes Grass or grass-like 5 ft Sun High Zone 3b
white spruce Picea glauca Tree 100 ft Sun–part shade Medium Zone 1a
whitebark pine Pinus albicaulis Tree 65 ft Sun–part shade Medium Zone 1b
whitebark raspberry Rubus leucodermis Vine 1 ft Sun Medium Zone 8a
whitestem gooseberry Ribes inerme Shrub 8 ft Shade-tolerant Medium Zone 4b
wild bergamot Monarda fistulosa Wildflower (forb) 4.9 ft Sun–part shade High Zone 4a
wild sarsaparilla Aralia nudicaulis Wildflower (forb) 1.5 ft Shade-tolerant Medium Zone 3b
woodland horsetail Equisetum sylvaticum Fern 11 in Shade-tolerant Low Zone 3a
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
yellow penstemon Penstemon confertus Wildflower (forb) 2 ft Shade-tolerant Medium Zone 5a
yellow willow Salix lutea Tree 16 ft Sun–part shade High Zone 3a

Other native species recorded here 116

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.

  • Aleutian maidenhair Adiantum aleuticum
  • alpine fescue Festuca brachyphylla
  • American mannagrass Glyceria grandis
  • American rockbrake Cryptogramma acrostichoides
  • American sloughgrass Beckmannia syzigachne
  • autumn dwarf gentian Gentianella amarella
  • balsam groundsel Packera paupercula
  • bastard toadflax Comandra umbellata
  • Bebb willow Salix bebbiana
  • bitter fleabane Erigeron acris
  • bog rosemary Andromeda polifolia
  • bog willow Salix pedicellaris
  • bog yellowcress Rorippa palustris
  • boreal bog sedge Carex magellanica
  • box knotweed Polygonum buxiforme
  • brownish sedge Carex brunnescens
  • bulblet-bearing water hemlock Cicuta bulbifera
  • Buxbaum's sedge Carex buxbaumii
  • carelessweed Cyclachaena xanthiifolia
  • chairmaker's bulrush Schoenoplectus americanus
  • common bladderwort Utricularia macrorhiza
  • Crawford's sedge Carex crawfordii
  • English sundew Drosera anglica
  • flatleaf bladderwort Utricularia intermedia
  • flatspine stickseed Lappula occidentalis
  • fringed loosestrife Lysimachia ciliata
  • fringed willowherb Epilobium ciliatum
  • Gmelin's buttercup Ranunculus gmelinii
  • green false hellebore Veratrum viride
  • groundcedar Lycopodium complanatum
  • hairy evening primrose Oenothera villosa
  • heartleaf twayblade Listera cordata
  • hemlock waterparsnip Sium suave
  • hookedspur violet Viola adunca
  • Hornemann's willowherb Epilobium hornemannii
  • inundated clubmoss Lycopodiella inundata
  • knotsheath sedge Carex retrorsa
  • large St. Johnswort Hypericum majus
  • lesser spikemoss Selaginella densa
  • little grapefern Botrychium simplex
  • long beechfern Phegopteris connectilis
  • Macoun's cudweed Pseudognaphalium macounii
  • maidenhair spleenwort Asplenium trichomanes
  • mapleleaf goosefoot Chenopodium simplex
  • marsh skullcap Scutellaria galericulata
  • marsh violet Viola palustris
  • marsh willowherb Epilobium palustre
  • Maryland sanicle Sanicula marilandica
  • meadow deathcamas Zigadenus venenosus
  • Menzies' campion Silene menziesii
  • Menzies' fiddleneck Amsinckia menziesii
  • milkflower willowherb Epilobium lactiflorum
  • Mingan moonwort Botrychium minganense
  • moss campion Silene acaulis
  • mountain deathcamas Zigadenus elegans
  • mountain tarweed Madia glomerata
  • muskflower Mimulus moschatus
  • narrowleaf bur-reed Sparganium angustifolium
  • narrowleaf cowwheat Melampyrum lineare
  • nodding onion Allium cernuum
  • northern bog aster Symphyotrichum boreale
  • northern bugleweed Lycopus uniflorus
  • northern cluster sedge Carex arcta
  • northern green orchid Platanthera aquilonis
  • northern hollyfern Polystichum lonchitis
  • oneflowered broomrape Orobanche uniflora
  • Oregon cliff fern Woodsia oregana
  • pinesap Monotropa hypopitys
  • poverty oatgrass Danthonia spicata
  • purple marshlocks Comarum palustre
  • purple meadow-rue Thalictrum dasycarpum
  • rannoch-rush Scheuchzeria palustris
  • resin birch Betula glandulosa
  • Rocky Mountain fescue Festuca saximontana
  • Rocky Mountain rush Juncus saximontanus
  • Rocky Mountain woodsia Woodsia scopulina
  • rosy pussytoes Antennaria rosea
  • roughleaf ricegrass Oryzopsis asperifolia
  • roundleaf sundew Drosera rotundifolia
  • running clubmoss Lycopodium clavatum
  • scentbottle Platanthera dilatata
  • scrambled eggs Corydalis aurea
  • shaggy fleabane Erigeron pumilus
  • shortspike watermilfoil Myriophyllum sibiricum
  • sixweeks fescue Vulpia octoflora
  • slender bog orchid Platanthera stricta
  • small bur-reed Sparganium natans
  • small cranberry Vaccinium oxycoccos
  • small pondweed Potamogeton pusillus
  • spearleaf stonecrop Sedum lanceolatum
  • spinulose woodfern Dryopteris carthusiana
  • spreading dogbane Apocynum androsaemifolium
  • starry false lily of the valley Maianthemum stellatum
  • stream orchid Epipactis gigantea
  • summer coralroot Corallorhiza maculata
  • swaying bulrush Schoenoplectus subterminalis
  • tall blue lettuce Lactuca biennis
  • tarragon Artemisia dracunculus
  • thinleaf cottonsedge Eriophorum viridicarinatum
  • twinflower Linnaea borealis
  • Virginia strawberry Fragaria virginiana
  • water mudwort Limosella aquatica
  • watershield Brasenia schreberi
  • western marsh cudweed Gnaphalium palustre
  • western poison ivy Toxicodendron rydbergii
  • western tansymustard Descurainia pinnata
  • white beaksedge Rhynchospora alba
  • white heath aster Symphyotrichum ericoides
  • witchgrass Panicum capillare
  • wood bluegrass Poa nemoralis
  • woodland draba Draba nemorosa
  • woodland strawberry Fragaria vesca
  • woolly sedge Carex pellita
  • woollyfruit sedge Carex lasiocarpa
  • yellow sedge Carex flava
  • yellow water buttercup Ranunculus flabellaris
Also listed as native and introduced here 4

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.

  • annual ragweedAmbrosia artemisiifolia
  • claspleaf twistedstalkStreptopus amplexifolius
  • common pepperweedLepidium densiflorum
  • 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, Boundary County and Idaho
MeasureBoundary CountyTypical countyStatewide
Native species 305 302 975
Garden-ready natives 189 211 591
Tree 33 — 65
Shrub 35 — 97
Wildflower (forb) 145 — 552
Grass or grass-like 67 — 206
Vine 4 — 14
Fern 21 — 41

Neighboring counties

Counties that share a ZIP code with Boundary 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
Boundary County (county FIPS 16021), Idaho. 305 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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