Native plants · Utah

Native plants of Washington County

531 plant species are recorded as native to Utah in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Washington County by USDA PLANTS. 333 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

Washington County, Utah

Native species: 531 Typical Utah county: 434 (median of 29 counties)
Garden-ready natives: 333 Typical Utah county: 290
Share by type (all 531 native species): Percent of the 531 native species in each growth type

Tree 9% (48)
Shrub 13% (70)
Wildflower (forb) 52% (278)
Grass or grass-like 21% (110)
Vine 2% (9)
Fern 3% (16)

Wildflowers make up the largest share of the native list (52%), followed by grasses and grass-like plants (21%).

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 6b to 8b (2023 map).

The native plant list

Garden-ready natives 333

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

Garden-ready native plants of Washington County, Utah
Plant	Type	Height	Light	Water use	Hardy to
alderleaf mountain mahogany Cercocarpus montanus	Tree	15 ft	Sun–part shade	Low	Zone 3a
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
alkali sacaton Sporobolus airoides	Grass or grass-like	3 ft	Sun	Low	Zone 3b
alpine leafybract aster Symphyotrichum foliaceum	Wildflower (forb)	2 ft	Sun	Medium	Zone 3b
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 licorice Glycyrrhiza lepidota	Wildflower (forb)	4 ft	Sun–part shade	High	Zone 3b
American plum Prunus americana	Tree	24 ft	Sun	Medium	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
antelope bitterbrush Purshia tridentata	Shrub	6 ft	Sun–part shade	Low	Zone 3b
Apache plume Fallugia paradoxa	Shrub	6 ft	Sun	Low	Zone 5a
arctic pearlwort Sagina saginoides	Wildflower (forb)	4 in	Sun–part shade	High	Zone 4a
arrowleaf balsamroot Balsamorhiza sagittata	Wildflower (forb)	2 ft	Sun–part shade	Medium	Zone 3b
banana yucca Yucca baccata	Shrub	4 ft	Sun	Low	Zone 7a
basin wildrye Leymus cinereus	Grass or grass-like	5 ft	Sun	High	Zone 3a
bastardsage Eriogonum wrightii	Shrub	2 ft	Sun–part shade	Low	Zone 6a
big bluestem Andropogon gerardii	Grass or grass-like	6 ft	Sun	Low	Zone 2b
big sacaton Sporobolus wrightii	Grass or grass-like	5.5 ft	Sun	Medium	Zone 6a
big sagebrush Artemisia tridentata	Tree	4 ft	Sun	Medium	Zone 3a
big saltbush Atriplex lentiformis	Shrub	10 ft	Sun	Low	Zone 8a
Bigelow's tansyaster Machaeranthera bigelovii	Wildflower (forb)	4 ft	Sun	Low	Zone 10b
bigtooth maple Acer grandidentatum	Tree	38 ft	Sun–part shade	Medium	Zone 4a
bitter cherry Prunus emarginata	Tree	80 ft	Sun	Medium	Zone 5a
black grama Bouteloua eriopoda	Grass or grass-like	2 ft	Sun	Low	Zone 5a
black sagebrush Artemisia nova	Shrub	2 ft	Sun	Low	Zone 5a
blackbrush Coleogyne ramosissima	Shrub	6 ft	Sun	Low	Zone 5b
blue grama Bouteloua gracilis	Grass or grass-like	1 ft	Sun	Medium	Zone 3a
blue spruce Picea pungens	Tree	100 ft	Sun–part shade	Medium	Zone 3b
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
boxelder Acer negundo	Tree	60 ft	Shade-tolerant	Medium	Zone 2b
broadleaf lupine Lupinus latifolius	Wildflower (forb)	25 ft	Shade-tolerant	High	Zone 5b
broadlipped twayblade Listera convallarioides	Wildflower (forb)	1 ft	Shade-tolerant	High	Zone 3b
broom snakeweed Gutierrezia sarothrae	Shrub	1.5 ft	Sun	Medium	Zone 3b
burrobush Ambrosia dumosa	Shrub	2 ft	Sun	Low	Zone 6a
bush muhly Muhlenbergia porteri	Grass or grass-like	2.8 ft	Sun–part shade	Medium	Zone 8b
butterfly milkweed Asclepias tuberosa	Wildflower (forb)	2 ft	Sun	Low	Zone 4a
California poppy Eschscholzia californica	Wildflower (forb)	1.2 ft	Sun–part shade	Low	Zone 8a
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
cane bluestem Bothriochloa barbinodis	Grass or grass-like	4 ft	Sun	Medium	Zone 7b
cardinalflower Lobelia cardinalis	Wildflower (forb)	5.9 ft	Shade-tolerant	Low	Zone 4a
Chamisso arnica Arnica chamissonis	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 4a
chokecherry Prunus virginiana	Tree	25 ft	Sun	Medium	Zone 3a
cloaked bulrush Scirpus pallidus	Grass or grass-like	5 ft	Sun	Medium	Zone 3b
clustered field sedge Carex praegracilis	Grass or grass-like	2 ft	Sun–part shade	Medium	Zone 3b
Colorado blue columbine Aquilegia coerulea	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 4b
Colorado four o'clock Mirabilis multiflora	Wildflower (forb)	2 ft	Sun	Low	Zone 5b
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
common hoptree Ptelea trifoliata	Tree	25 ft	Sun–part shade	High	Zone 4a
common juniper Juniperus communis	Tree	10 ft	Sun	Low	Zone 3a
common maidenhair Adiantum capillus-veneris	Fern	1.7 ft	Shade-tolerant	High	Zone 4a
common reed Phragmites australis	Shrub	13 ft	Sun	Medium	Zone 3b
common spikerush Eleocharis palustris	Grass or grass-like	1.3 ft	Sun	High	Zone 3b
common threesquare Schoenoplectus pungens	Grass or grass-like	4.9 ft	Sun	High	Zone 3b
cosmopolitan bulrush Bolboschoenus maritimus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 5a
cous biscuitroot Lomatium cous	Wildflower (forb)	10 in	Sun	Low	Zone 4b
creeping barberry Mahonia repens	Shrub	2 ft	Shade-tolerant	Medium	Zone 5a
creosote bush Larrea tridentata	Shrub	10 ft	Sun	Low	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 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
desert almond Prunus fasciculata	Shrub	6 ft	Sun	Low	Zone 8b
desert bitterbrush Purshia glandulosa	Shrub	5 ft	Sun	Low	Zone 6a
desert ceanothus Ceanothus greggii	Shrub	7 ft	Sun	Low	Zone 6a
desert centaury Centaurium exaltatum	Wildflower (forb)	1.5 ft	Sun	Medium	Zone 12b
desert globemallow Sphaeralcea ambigua	Wildflower (forb)	5 ft	Sun	Low	Zone 6b
desert needlegrass Achnatherum speciosum	Grass or grass-like	2 ft	Sun	Low	Zone 6a
desert sweet Chamaebatiaria millefolium	Shrub	6 ft	Sun	Low	Zone 5a
desert willow Chilopsis linearis	Tree	25 ft	Sun–part shade	Low	Zone 5a
devil's beggartick Bidens frondosa	Wildflower (forb)	4 ft	Sun–part shade	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
Eastern Mojave buckwheat Eriogonum fasciculatum	Shrub	3 ft	Sun	Low	Zone 8a
Eaton's fleabane Erigeron eatonii	Wildflower (forb)	10 in	Sun	Low	Zone 5b
Engelmann spruce Picea engelmannii	Tree	120 ft	Shade-tolerant	Medium	Zone 2a
false indigo bush Amorpha fruticosa	Shrub	15 ft	Sun	Low	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
firecracker penstemon Penstemon eatonii	Wildflower (forb)	4 ft	Sun–part shade	Low	Zone 4a
fireweed Chamerion angustifolium	Wildflower (forb)	5.5 ft	Sun–part shade	High	Zone 3b
fivepetal cliffbush Jamesia americana	Shrub	6 ft	Sun	Medium	Zone 5a
foothill deathcamas Zigadenus paniculatus	Wildflower (forb)	1.6 ft	Sun	Medium	Zone 4a
fourwing saltbush Atriplex canescens	Shrub	4 ft	Sun	Medium	Zone 3a
fowl bluegrass Poa palustris	Grass or grass-like	4 ft	Sun–part shade	Medium	Zone 3b
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
Fremont cottonwood Populus fremontii	Tree	90 ft	Sun	High	Zone 6a
fringed brome Bromus ciliatus	Grass or grass-like	4 ft	Shade-tolerant	Medium	Zone 7a
Gambel oak Quercus gambelii	Tree	40 ft	Sun	Low	Zone 3a
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
glaucous bluegrass Poa glauca	Grass or grass-like	2 ft	Sun	—	Zone 3a
glaucus willowherb Epilobium glaberrimum	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 6b
golden crownbeard Verbesina encelioides	Wildflower (forb)	2 ft	Sun	Medium	Zone 5a
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
Goodding's willow Salix gooddingii	Tree	40 ft	Sun	High	Zone 5a
gooseberry currant Ribes montigenum	Shrub	1 ft	Sun–part shade	Medium	Zone 7a
gooseberryleaf globemallow Sphaeralcea grossulariifolia	Wildflower (forb)	2 ft	Sun–part shade	Low	Zone 5a
granite prickly phlox Linanthus pungens	Wildflower (forb)	2 ft	Shade-tolerant	Low	Zone 4a
gray aster Eurybia glauca	Wildflower (forb)	2 ft	Sun	Medium	Zone 3a
greasewood Sarcobatus vermiculatus	Shrub	10 ft	Sun	Low	Zone 3b
green ash Fraxinus pennsylvanica	Tree	80 ft	Shade-tolerant	Medium	Zone 2b
Greene's mountain ash Sorbus scopulina	Tree	12 ft	Sun–part shade	Medium	Zone 7a
greenleaf manzanita Arctostaphylos patula	Shrub	6 ft	Sun–part shade	Medium	Zone 4b
hairy grama Bouteloua hirsuta	Grass or grass-like	6 in	Sun	Low	Zone 3b
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
heartleaf bittercress Cardamine cordifolia	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4b
honeylocust Gleditsia triacanthos	Tree	70 ft	Sun	Medium	Zone 3b
hooded lady's tresses Spiranthes romanzoffiana	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 3b
Hooker's balsamroot Balsamorhiza hookeri	Wildflower (forb)	1 ft	Sun–part shade	Medium	Zone 5b
Hooker's evening primrose Oenothera elata	Wildflower (forb)	5 ft	Sun	High	Zone 5a
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
Indiangrass Sorghastrum nutans	Grass or grass-like	6 ft	Sun	Medium	Zone 3b
Indianhemp Apocynum cannabinum	Wildflower (forb)	3.3 ft	Sun–part shade	High	Zone 3a
James' galleta Pleuraphis jamesii	Grass or grass-like	2 ft	Sun	Low	Zone 5a
jojoba Simmondsia chinensis	Shrub	7 ft	Sun	Low	Zone 7a
King's sandwort Arenaria kingii	Wildflower (forb)	8 in	Sun	Low	Zone 4b
knotgrass Paspalum distichum	Grass or grass-like	11 in	Sun	High	Zone 6a
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 hawksbeard Crepis occidentalis	Wildflower (forb)	11 in	Sun	Low	Zone 5a
largeleaf avens Geum macrophyllum	Wildflower (forb)	2 ft	Shade-tolerant	Medium	Zone 4a
leafy pondweed Potamogeton foliosus	Wildflower (forb)	—	Sun	High	Zone 3b
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 barley Hordeum pusillum	Grass or grass-like	1.2 ft	Sun	Medium	Zone 10b
little bluestem Schizachyrium scoparium	Grass or grass-like	3 ft	Sun	Low	Zone 3b
littleleaf mock orange Philadelphus microphyllus	Shrub	15 ft	Sun	Low	Zone 5a
littleleaf pussytoes Antennaria microphylla	Wildflower (forb)	1 ft	Sun	Low	Zone 3b
littleleaf ratany Krameria erecta	Shrub	2 ft	Sun	Low	Zone 6a
littleseed ricegrass Piptatheropsis micrantha	Grass or grass-like	2.5 ft	Sun	Low	Zone 3b
longleaf phlox Phlox longifolia	Wildflower (forb)	1.2 ft	Sun–part shade	Low	Zone 6a
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
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
Malabar sprangletop Leptochloa fusca	Grass or grass-like	3.3 ft	Sun	High	Zone 3a
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
Mertens' rush Juncus mertensianus	Grass or grass-like	11 in	Sun–part shade	High	Zone 4a
mesa dropseed Sporobolus flexuosus	Grass or grass-like	3 ft	Sun	Low	Zone 7a
miner's lettuce Claytonia perfoliata	Wildflower (forb)	1 ft	Shade-tolerant	Medium	Zone 12b
Missouri goldenrod Solidago missouriensis	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 3b
Missouri gourd Cucurbita foetidissima	Vine	1 ft	Sun	Low	Zone 5a
mormon tea Ephedra viridis	Shrub	3 ft	Sun–part shade	Low	Zone 5b
mountain brome Bromus marginatus	Grass or grass-like	4 ft	Sun	High	Zone 4b
mountain muhly Muhlenbergia montana	Grass or grass-like	1.5 ft	Sun	Medium	Zone 3b
mountain pepperweed Lepidium montanum	Wildflower (forb)	10 in	Sun–part shade	Low	Zone 4a
mountain snowberry Symphoricarpos oreophilus	Shrub	5 ft	Sun–part shade	Low	Zone 4a
mule-ears Wyethia amplexicaulis	Wildflower (forb)	2.5 ft	Sun	Medium	Zone 3b
mule-fat Baccharis salicifolia	Shrub	10 ft	Sun	Medium	Zone 7a
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
nettleleaf giant hyssop Agastache urticifolia	Wildflower (forb)	5 ft	Sun–part shade	Medium	Zone 4a
Nevada jointfir Ephedra nevadensis	Shrub	3 ft	Sun	Low	Zone 6a
New Mexico locust Robinia neomexicana	Tree	25 ft	Sun	Medium	Zone 5a
nimblewill Muhlenbergia schreberi	Grass or grass-like	3.2 ft	Shade-tolerant	Low	Zone 4a
Nootka rose Rosa nutkana	Shrub	10 ft	Shade-tolerant	High	Zone 8a
northern catalpa Catalpa speciosa	Tree	60 ft	Sun	Low	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
oceanspray Holodiscus discolor	Shrub	12 ft	Sun	High	Zone 8a
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
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 desert-thorn Lycium pallidum	Shrub	6 ft	Sun	Medium	Zone 6a
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
pine dropseed Blepharoneuron tricholepis	Grass or grass-like	3 ft	Sun–part shade	Low	Zone 5a
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
pointleaf manzanita Arctostaphylos pungens	Shrub	12 ft	Sun–part shade	Low	Zone 9b
prairie Junegrass Koeleria macrantha	Grass or grass-like	1.5 ft	Shade-tolerant	High	Zone 3b
prairie sagewort Artemisia frigida	Shrub	2 ft	Sun–part shade	Low	Zone 3a
prairie wedgescale Sphenopholis obtusata	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 3a
primrose monkeyflower Mimulus primuloides	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 4a
purple sage Salvia dorrii	Shrub	2.5 ft	Sun	Medium	Zone 5a
purple threeawn Aristida purpurea	Grass or grass-like	1.4 ft	Sun	Low	Zone 4a
quaking aspen Populus tremuloides	Tree	65 ft	Sun	High	Zone 1a
Rainier pleated gentian Gentiana calycosa	Wildflower (forb)	7 in	Shade-tolerant	Medium	Zone 8a
red elderberry Sambucus racemosa	Tree	18 ft	Sun–part shade	High	Zone 4a
redosier dogwood Cornus sericea	Tree	12 ft	Sun	High	Zone 3b
redroot flatsedge Cyperus erythrorhizos	Grass or grass-like	2.5 ft	Sun	Medium	Zone 11a
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
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
rough menodora Menodora scabra	Wildflower (forb)	1 ft	Sun	Low	Zone 9a
rubber rabbitbrush Ericameria nauseosa	Shrub	4 ft	Sun	Medium	Zone 3b
Rydberg's penstemon Penstemon rydbergii	Wildflower (forb)	3 ft	Sun	Low	Zone 3b
sago pondweed Stuckenia pectinata	Wildflower (forb)	—	Sun	High	Zone 3b
salt heliotrope Heliotropium curassavicum	Wildflower (forb)	1.2 ft	Sun	Medium	Zone 4b
salt spring checkerbloom Sidalcea neomexicana	Wildflower (forb)	2.5 ft	Shade-tolerant	High	Zone 5a
saltgrass Distichlis spicata	Grass or grass-like	1.1 ft	Sun	Medium	Zone 3b
saltmarsh bird's-beak Cordylanthus maritimus	Wildflower (forb)	1.7 ft	Sun	Medium	Zone 8a
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
sandhill muhly Muhlenbergia pungens	Grass or grass-like	1.5 ft	Sun	Low	Zone 5a
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
scarlet globemallow Sphaeralcea coccinea	Wildflower (forb)	1.5 ft	Sun	Low	Zone 5a
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
screwbean mesquite Prosopis pubescens	Tree	25 ft	Sun–part shade	Medium	Zone 7a
seep monkeyflower Mimulus guttatus	Wildflower (forb)	2.5 ft	Shade-tolerant	High	Zone 3b
shadscale saltbush Atriplex confertifolia	Shrub	3 ft	Sun	Medium	Zone 3b
shining willow Salix lucida	Tree	13 ft	Sun–part shade	High	Zone 3a
shiny chickweed Stellaria nitens	Wildflower (forb)	10 in	Shade-tolerant	Medium	Zone 12a
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
sideoats grama Bouteloua curtipendula	Grass or grass-like	3 ft	Sun	Medium	Zone 3a
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
silvery lupine Lupinus argenteus	Wildflower (forb)	1.5 ft	Sun	Low	Zone 3a
singleleaf ash Fraxinus anomala	Tree	20 ft	Sun	Medium	Zone 5a
singleleaf pinyon Pinus monophylla	Tree	50 ft	Sun	Low	Zone 5a
skunkbush sumac Rhus trilobata	Shrub	4 ft	Sun–part shade	Low	Zone 2a
slender cinquefoil Potentilla gracilis	Wildflower (forb)	2.4 ft	Sun	Low	Zone 3a
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 enchanter's nightshade Circaea alpina	Wildflower (forb)	11 in	Shade-tolerant	Medium	Zone 3b
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
smooth sumac Rhus glabra	Tree	12 ft	Sun	Low	Zone 4a
softleaf sedge Carex disperma	Grass or grass-like	2 ft	Sun–part shade	High	Zone 3b
southwestern showy sedge Carex bella	Grass or grass-like	2 ft	Sun–part shade	High	Zone 5b
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
spiny hopsage Grayia spinosa	Shrub	3 ft	Sun	Low	Zone 4a
spreading alkaliweed Cressa truxillensis	Wildflower (forb)	10 in	Sun	Medium	Zone 6a
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
strawcolored flatsedge Cyperus strigosus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 4a
streambank wild hollyhock Iliamna rivularis	Wildflower (forb)	6 ft	Sun–part shade	Medium	Zone 4a
Suksdorf's monkeyflower Mimulus suksdorfii	Wildflower (forb)	7 in	Shade-tolerant	Medium	Zone 12b
sulphur-flower buckwheat Eriogonum umbellatum	Shrub	1 ft	Sun	Low	Zone 8a
sweetscent Pluchea odorata	Wildflower (forb)	4.9 ft	Sun	Medium	Zone 6a
tanseyleaf tansyaster Machaeranthera tanacetifolia	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
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
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
tinker's penny Hypericum anagalloides	Wildflower (forb)	10 in	Sun–part shade	High	Zone 12a
Torrey's jointfir Ephedra torreyana	Shrub	1 ft	Sun	Low	Zone 4b
Torrey's rush Juncus torreyi	Grass or grass-like	3.1 ft	Sun	Medium	Zone 3b
trumpet creeper Campsis radicans	Vine	2 ft	Sun	Low	Zone 6a
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
turkey tangle fogfruit Phyla nodiflora	Wildflower (forb)	2 in	Sun–part shade	Low	Zone 5b
turpentinebroom Thamnosma montana	Shrub	2 ft	Sun	Low	Zone 7a
twinberry honeysuckle Lonicera involucrata	Shrub	10 ft	Shade-tolerant	High	Zone 3a
twoneedle pinyon Pinus edulis	Tree	50 ft	Sun	Low	Zone 4a
upright prairie coneflower Ratibida columnifera	Wildflower (forb)	3.1 ft	Sun	Medium	Zone 3a
Utah agave Agave utahensis	Shrub	1 ft	Sun	Low	Zone 5a
Utah honeysuckle Lonicera utahensis	Shrub	5 ft	Shade-tolerant	High	Zone 5a
Utah juniper Juniperus osteosperma	Tree	26 ft	Sun	Low	Zone 4b
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
valdivia duckweed Lemna valdiviana	Wildflower (forb)	1 in	Sun	High	Zone 4a
velvet ash Fraxinus velutina	Tree	40 ft	Sun	Low	Zone 6a
vernal water-starwort Callitriche palustris	Wildflower (forb)	10 in	Sun	Medium	Zone 4a
vine mesquite Panicum obtusum	Grass or grass-like	2 ft	Sun–part shade	High	Zone 5a
water birch Betula occidentalis	Tree	25 ft	Sun–part shade	High	Zone 1a
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 columbine Aquilegia formosa	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 5a
western goldentop Euthamia occidentalis	Wildflower (forb)	6 ft	Sun	Medium	Zone 4b
western Labrador tea Ledum glandulosum	Shrub	4.5 ft	Shade-tolerant	Medium	Zone 4b
western pearly everlasting Anaphalis margaritacea	Wildflower (forb)	3 ft	Sun–part shade	Medium	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 waterleaf Hydrophyllum occidentale	Wildflower (forb)	1.5 ft	Shade-tolerant	Medium	Zone 5b
western wheatgrass Pascopyrum smithii	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
western white clematis Clematis ligusticifolia	Vine	1 ft	Sun–part shade	Medium	Zone 3b
white fir Abies concolor	Tree	120 ft	Sun–part shade	Medium	Zone 3b
white panicle aster Symphyotrichum lanceolatum	Wildflower (forb)	6 ft	Sun–part shade	High	Zone 3b
white sagebrush Artemisia ludoviciana	Wildflower (forb)	3 ft	Sun	Low	Zone 4a
whitebark raspberry Rubus leucodermis	Vine	1 ft	Sun	Medium	Zone 8a
whitestem gooseberry Ribes inerme	Shrub	8 ft	Shade-tolerant	Medium	Zone 4b
winterfat Krascheninnikovia lanata	Shrub	2 ft	Sun	Low	Zone 2a
Woods' rose Rosa woodsii	Shrub	3 ft	Sun–part shade	Medium	Zone 3a
woolly locoweed Astragalus mollissimus	Wildflower (forb)	2 ft	Sun	Low	Zone 4b
woolly plantain Plantago patagonica	Wildflower (forb)	6 in	Sun	Low	Zone 12b
yellow evening primrose Oenothera flava	Wildflower (forb)	2.5 ft	Sun–part shade	Medium	Zone 4a
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 spiderflower Cleome lutea	Wildflower (forb)	2.7 ft	Sun	Low	Zone 12a
yellow willow Salix lutea	Tree	16 ft	Sun–part shade	High	Zone 3a
yerba mansa Anemopsis californica	Wildflower (forb)	1.5 ft	Sun	High	Zone 9b

Other native species recorded here 198

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 lewisia Lewisia pygmaea
American bugseed Corispermum americanum
American dragonhead Dracocephalum parviflorum
American yellowrocket Barbarea orthoceras
aridland goosefoot Chenopodium desiccatum
arroyo willow Salix lasiolepis
autumn dwarf gentian Gentianella amarella
ballhead ipomopsis Ipomopsis congesta
bastard toadflax Comandra umbellata
bearded flatsedge Cyperus squarrosus
beautiful cinquefoil Potentilla pulcherrima
Bebb willow Salix bebbiana
bigbract verbena Verbena bracteata
blackstem spleenwort Asplenium resiliens
bluntleaf yellowcress Rorippa curvipes
bog yellowcress Rorippa palustris
bottlebrush sedge Carex hystericina
brittle bladderfern Cystopteris fragilis
buffalobur nightshade Solanum rostratum
bulblet bladderfern Cystopteris bulbifera
camphorweed Heterotheca subaxillaris
Carolina draba Draba reptans
Carruth's sagewort Artemisia carruthii
chairmaker's bulrush Schoenoplectus americanus
clasping Venus' looking-glass Triodanis perfoliata
clustered broomrape Orobanche fasciculata
common starlily Leucocrinum montanum
Cuman ragweed Ambrosia psilostachya
curlycup gumweed Grindelia squarrosa
curlytop knotweed Polygonum lapathifolium
cutleaf nightshade Solanum triflorum
desert horsepurslane Trianthema portulacastrum
desert princesplume Stanleya pinnata
Douglas' knotweed Polygonum douglasii
Drummond's false pennyroyal Hedeoma drummondii
dryspike sedge Carex siccata
elkweed Frasera speciosa
entireleaved thelypody Thelypodium integrifolium
false buffalograss Munroa squarrosa
feather fingergrass Chloris virgata
feathery false lily of the valley Maianthemum racemosum
fineleaf hymenopappus Hymenopappus filifolius
fire on the mountain Euphorbia cyathophora
flatspine bur ragweed Ambrosia acanthicarpa
flatspine stickseed Lappula occidentalis
foxtail barley Hordeum jubatum
foxtail muhly Muhlenbergia andina
fragrant bedstraw Galium triflorum
Fremont's goosefoot Chenopodium fremontii
fringed willowherb Epilobium ciliatum
giant red Indian paintbrush Castilleja miniata
greenflowered wintergreen Pyrola chlorantha
hairy evening primrose Oenothera villosa
hairy waterclover Marsilea vestita
hoary tansyaster Machaeranthera canescens
hooded coralroot Corallorhiza striata
Hopi tea greenthread Thelesperma megapotamicum
horned pondweed Zannichellia palustris
Hornemann's willowherb Epilobium hornemannii
husk tomato Physalis pubescens
hyssopleaf sandmat Chamaesyce hyssopifolia
ivyleaf groundcherry Physalis hederifolia
James' cryptantha Cryptantha cinerea
lacy tansyaster Machaeranthera pinnatifida
lanceleaf figwort Scrophularia lanceolata
least duckweed Lemna minuta
lemon scurfpea Psoralidium lanceolatum
lesser wirelettuce Stephanomeria minor
little grapefern Botrychium simplex
liverleaf wintergreen Pyrola asarifolia
longleaf groundcherry Physalis longifolia
Louisiana vetch Vicia ludoviciana
male fern Dryopteris filix-mas
manyflowered monkeyflower Mimulus floribundus
mat sandbur Cenchrus longispinus
meadow deathcamas Zigadenus venenosus
mealy goosefoot Chenopodium incanum
Menzies' fiddleneck Amsinckia menziesii
Modoc yellowcress Rorippa tenerrima
Mojave seablite Suaeda moquinii
mountain deathcamas Zigadenus elegans
mountain tansymustard Descurainia incana
mountain tarweed Madia glomerata
mucronate sprangletop Leptochloa panicea
narrowleaf four o'clock Mirabilis linearis
narrowleaf goosefoot Chenopodium leptophyllum
narrowleaf stoneseed Lithospermum incisum
neckweed Veronica peregrina
needleleaf navarretia Navarretia intertexta
nodding buckwheat Eriogonum cernuum
northern bog violet Viola nephrophylla
northern green orchid Platanthera aquilonis
northern hollyfern Polystichum lonchitis
northern water plantain Alisma triviale
oneflowered broomrape Orobanche uniflora
Oregon cliff fern Woodsia oregana
painted milkvetch Astragalus ceramicus
Palmer's penstemon Penstemon palmeri
Pennsylvania pellitory Parietaria pensylvanica
pinyon goosefoot Chenopodium atrovirens
pleated gentian Gentiana affinis
pony beebalm Monarda pectinata
Porter brome Bromus porteri
povertyweed Iva axillaris
Powell's amaranth Amaranthus powellii
prairie cupgrass Eriochloa contracta
prairie spiderwort Tradescantia occidentalis
prairie sunflower Helianthus petiolaris
purple cliffbrake Pellaea atropurpurea
Pursh seepweed Suaeda calceoliformis
pygmyflower rockjasmine Androsace septentrionalis
red baneberry Actaea rubra
ribseed sandmat Chamaesyce glyptosperma
Richardson's pondweed Potamogeton richardsonii
Rocky Mountain fescue Festuca saximontana
Rocky Mountain rush Juncus saximontanus
rosy pussytoes Antennaria rosea
roughfruit fairybells Prosartes trachycarpa
rusty lupine Lupinus pusillus
saline saltbush Atriplex subspicata
salt sandspurry Spergularia salina
sand sagebrush Artemisia filifolia
sanddune cryptantha Cryptantha fendleri
scarlet beeblossom Oenothera suffrutescens
scentbottle Platanthera dilatata
Scouler's popcornflower Plagiobothrys scouleri
scrambled eggs Corydalis aurea
seaside arrowgrass Triglochin maritima
shaggy fleabane Erigeron pumilus
sheathed pondweed Stuckenia vaginata
shortray fleabane Erigeron lonchophyllus
shortspike watermilfoil Myriophyllum sibiricum
shy wallflower Erysimum inconspicuum
sidebells wintergreen Orthilia secunda
silverleaf nightshade Solanum elaeagnifolium
silverscale saltbush Atriplex argentea
sixweeks fescue Vulpia octoflora
sixweeks threeawn Aristida adscensionis
sleepy silene Silene antirrhina
slender lipfern Cheilanthes feei
slender phlox Microsteris gracilis
slimflower scurfpea Psoralidium tenuiflorum
small-leaf pussytoes Antennaria parvifolia
smooth cliffbrake Pellaea glabella
snowball sand verbena Abronia fragrans
snowline wintergreen Pyrola minor
southern cattail Typha domingensis
southwestern waterwort Elatine rubella
spearleaf stonecrop Sedum lanceolatum
spike dropseed Sporobolus contractus
spinystar Escobaria vivipara
spotted fritillary Fritillaria atropurpurea
spreading dogbane Apocynum androsaemifolium
spreading fleabane Erigeron divergens
spreading sandwort Arenaria lanuginosa
spring coralroot Corallorhiza wisteriana
starry false lily of the valley Maianthemum stellatum
stemless four-nerve daisy Tetraneuris acaulis
stemless Townsend daisy Townsendia exscapa
stream orchid Epipactis gigantea
summer coralroot Corallorhiza maculata
sweetcicely Osmorhiza berteroi
tall annual willowherb Epilobium brachycarpum
tarragon Artemisia dracunculus
tasselflower brickellbush Brickellia grandiflora
Texas toadflax Nuttallanthus texanus
threadleaf crowfoot Ranunculus trichophyllus
tiny trumpet Collomia linearis
tobacco root Valeriana edulis
trailing fleabane Erigeron flagellaris
tufted lovegrass Eragrostis pectinacea
twistspine pricklypear Opuntia macrorhiza
variegated scouringrush Equisetum variegatum
veiny dock Rumex venosus
velvetweed Oenothera curtiflora
Virginia pepperweed Lepidium virginicum
warty caltrop Kallstroemia parviflora
warty spurge Euphorbia spathulata
water minerslettuce Montia chamissoi
water mudwort Limosella aquatica
water whorlgrass Catabrosa aquatica
wedgeleaf draba Draba cuneifolia
western marsh cudweed Gnaphalium palustre
western poison ivy Toxicodendron rydbergii
western rattlesnake plantain Goodyera oblongifolia
western tansymustard Descurainia pinnata
white heath aster Symphyotrichum ericoides
white prairie aster Symphyotrichum falcatum
whitest evening primrose Oenothera albicaulis
whitestem blazingstar Mentzelia albicaulis
whorled marshpennywort Hydrocotyle prolifera
witchgrass Panicum capillare
woodland pinedrops Pterospora andromedea
woodland strawberry Fragaria vesca
woolly sedge Carex pellita
woolly tidestromia Tidestromia lanuginosa
Wright's cudweed Pseudognaphalium canescens

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.

American red raspberryRubus idaeus
annual ragweedAmbrosia artemisiifolia
biennial wormwoodArtemisia biennis
Kentucky bluegrassPoa pratensis

Compared with Utah

The typical county is the median of the 29 Utah 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, Washington County and Utah
Measure	Washington County	Typical county	Statewide
Native species	531	434	959
Garden-ready natives	333	290	572
Tree	48	—	58
Shrub	70	—	102
Wildflower (forb)	278	—	524
Grass or grass-like	110	—	228
Vine	9	—	16
Fern	16	—	31

Neighboring counties

Counties that share a ZIP code with Washington County.

Iron County, UT 250 garden-ready

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: Washington County (county FIPS 49053), Utah. 531 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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