Native plants · Colorado

Native plants of Delta County

248 plant species are recorded as native to Colorado in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Delta County by USDA PLANTS. 169 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

Delta County, Colorado

Native species: 248 Typical Colorado county: 237 (median of 63 counties)
Garden-ready natives: 169 Typical Colorado county: 148
Share by type (all 248 native species): Percent of the 248 native species in each growth type

Tree 9% (22)
Shrub 13% (32)
Wildflower (forb) 54% (134)
Grass or grass-like 21% (52)
Vine 2% (4)
Fern 2% (4)

Wildflowers make up the largest share of the native list (54%), 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 5b to 6b (2023 map).

The native plant list

Garden-ready natives 169

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

Garden-ready native plants of Delta County, Colorado
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
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 licorice Glycyrrhiza lepidota	Wildflower (forb)	4 ft	Sun–part shade	High	Zone 3b
American red raspberry Rubus idaeus	Shrub	6 ft	Shade-tolerant	—	Zone 1a
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
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
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
beaked spikerush Eleocharis rostellata	Grass or grass-like	3 ft	Sun	High	Zone 4b
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
broom snakeweed Gutierrezia sarothrae	Shrub	1.5 ft	Sun	Medium	Zone 3b
bud sagebrush Picrothamnus desertorum	Shrub	2 ft	Sun	Low	Zone 3a
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
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
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
Columbia needlegrass Achnatherum nelsonii	Grass or grass-like	3 ft	Sun	Low	Zone 4b
common duckweed Lemna minor	Wildflower (forb)	—	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 spikerush Eleocharis palustris	Grass or grass-like	1.3 ft	Sun	High	Zone 3b
creeping barberry Mahonia repens	Shrub	2 ft	Shade-tolerant	Medium	Zone 5a
cutleaf coneflower Rudbeckia laciniata	Wildflower (forb)	8.2 ft	Shade-tolerant	Low	Zone 3b
diamondleaf willow Salix planifolia	Tree	8 ft	Sun	Medium	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
eastern cottonwood Populus deltoides	Tree	190 ft	Sun	High	Zone 3a
elephanthead lousewort Pedicularis groenlandica	Wildflower (forb)	2.5 ft	Sun–part shade	High	Zone 4a
fiddleleaf hawksbeard Crepis runcinata	Wildflower (forb)	1 ft	Sun	Medium	Zone 3b
fourwing saltbush Atriplex canescens	Shrub	4 ft	Sun	Medium	Zone 3a
fowl mannagrass Glyceria striata	Grass or grass-like	5.7 ft	Shade-tolerant	Medium	Zone 3b
fringed grass of Parnassus Parnassia fimbriata	Wildflower (forb)	1.2 ft	Sun–part shade	High	Zone 4b
Gambel oak Quercus gambelii	Tree	40 ft	Sun	Low	Zone 3a
Gardner's saltbush Atriplex gardneri	Shrub	4 ft	Sun	Low	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
gray alder Alnus incana	Tree	25 ft	Sun–part shade	High	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 molly Bassia americana	Shrub	2 ft	Sun	Low	Zone 4a
hairy false goldenaster Heterotheca villosa	Wildflower (forb)	3 ft	Sun	Low	Zone 4a
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
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
James' galleta Pleuraphis jamesii	Grass or grass-like	2 ft	Sun	Low	Zone 5a
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
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
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
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
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
meadow barley Hordeum brachyantherum	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
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
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
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
northern bedstraw Galium boreale	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 4a
Northwest Territory sedge Carex utriculata	Grass or grass-like	3.5 ft	Sun	High	Zone 3a
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
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
park willow Salix monticola	Tree	12 ft	Sun	Low	Zone 3b
pine dropseed Blepharoneuron tricholepis	Grass or grass-like	3 ft	Sun–part shade	Low	Zone 5a
plantainleaf buttercup Ranunculus alismifolius	Wildflower (forb)	2 ft	Sun–part shade	High	Zone 4a
prickly rose Rosa acicularis	Shrub	4 ft	Shade-tolerant	High	Zone 3b
quaking aspen Populus tremuloides	Tree	65 ft	Sun	High	Zone 1a
red elderberry Sambucus racemosa	Tree	18 ft	Sun–part shade	High	Zone 4a
redosier dogwood Cornus sericea	Tree	12 ft	Sun	High	Zone 3b
reed canarygrass Phalaris arundinacea	Grass or grass-like	5 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
Rocky Mountain penstemon Penstemon strictus	Wildflower (forb)	2 ft	Sun	Low	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
Rydberg's penstemon Penstemon rydbergii	Wildflower (forb)	3 ft	Sun	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
scarlet globemallow Sphaeralcea coccinea	Wildflower (forb)	1.5 ft	Sun	Low	Zone 5a
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
shortawn foxtail Alopecurus aequalis	Grass or grass-like	2.5 ft	Sun–part shade	High	Zone 3b
shortfruit willow Salix brachycarpa	Shrub	3.6 ft	—	—	Zone 5a
shortspine horsebrush Tetradymia spinosa	Shrub	3.2 ft	Sun	Low	Zone 4b
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 fumewort Corydalis caseana	Wildflower (forb)	3 ft	Shade-tolerant	Medium	Zone 2b
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 buffaloberry Shepherdia argentea	Tree	18 ft	Sun–part shade	Medium	Zone 3b
silvery lupine Lupinus argenteus	Wildflower (forb)	1.5 ft	Sun	Low	Zone 3a
skunkbush sumac Rhus trilobata	Shrub	4 ft	Sun–part shade	Low	Zone 2a
slender wheatgrass Elymus trachycaulus	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
small white violet Viola macloskeyi	Wildflower (forb)	6 in	Shade-tolerant	High	Zone 4b
smallflowered woodrush Luzula parviflora	Grass or grass-like	2 ft	Shade-tolerant	High	Zone 4a
smooth blue aster Symphyotrichum laeve	Wildflower (forb)	4 ft	Sun	Medium	Zone 3a
smooth horsetail Equisetum laevigatum	Fern	5 ft	Sun	Low	Zone 3b
southwestern showy sedge Carex bella	Grass or grass-like	2 ft	Sun–part shade	High	Zone 5b
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
spiny hopsage Grayia spinosa	Shrub	3 ft	Sun	Low	Zone 4a
squirreltail Elymus elymoides	Grass or grass-like	1.5 ft	Sun	Low	Zone 3a
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
sulphur-flower buckwheat Eriogonum umbellatum	Shrub	1 ft	Sun	Low	Zone 8a
switchgrass Panicum virgatum	Grass or grass-like	5 ft	Sun	Medium	Zone 3a
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
thimbleberry Rubus parviflorus	Shrub	4 ft	Sun–part shade	High	Zone 4b
thrift mock goldenweed Stenotus armerioides	Wildflower (forb)	1 ft	Sun	Low	Zone 5a
Thurber's fescue Festuca thurberi	Grass or grass-like	2 ft	Sun	Low	Zone 4a
Torrey's jointfir Ephedra torreyana	Shrub	1 ft	Sun	Low	Zone 4b
twinberry honeysuckle Lonicera involucrata	Shrub	10 ft	Shade-tolerant	High	Zone 3a
twoneedle pinyon Pinus edulis	Tree	50 ft	Sun	Low	Zone 4a
umbrella starwort Stellaria umbellata	Wildflower (forb)	1 ft	Shade-tolerant	High	Zone 4b
Utah juniper Juniperus osteosperma	Tree	26 ft	Sun	Low	Zone 4b
vernal water-starwort Callitriche palustris	Wildflower (forb)	10 in	Sun	Medium	Zone 4a
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
western goldentop Euthamia occidentalis	Wildflower (forb)	6 ft	Sun	Medium	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 wheatgrass Pascopyrum smithii	Grass or grass-like	2 ft	Sun	Medium	Zone 3a
Whipple's penstemon Penstemon whippleanus	Wildflower (forb)	3 ft	Sun–part shade	Medium	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
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

Other native species recorded here 79

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 milkvetch Astragalus alpinus
American dragonhead Dracocephalum parviflorum
American mannagrass Glyceria grandis
American rockbrake Cryptogramma acrostichoides
American yellowrocket Barbarea orthoceras
Apocynum ×floribundum Apocynum ×floribundum
autumn dwarf gentian Gentianella amarella
bastard toadflax Comandra umbellata
beautiful cinquefoil Potentilla pulcherrima
bigbract verbena Verbena bracteata
bluntleaf yellowcress Rorippa curvipes
brittle bladderfern Cystopteris fragilis
carelessweed Cyclachaena xanthiifolia
Carruth's sagewort Artemisia carruthii
curlycup gumweed Grindelia squarrosa
desert princesplume Stanleya pinnata
Douglas' knotweed Polygonum douglasii
entireleaved thelypody Thelypodium integrifolium
feathery false lily of the valley Maianthemum racemosum
fineleaf hymenopappus Hymenopappus filifolius
flatspine stickseed Lappula occidentalis
foxtail barley Hordeum jubatum
foxtail muhly Muhlenbergia andina
fragrant bedstraw Galium triflorum
fringed willowherb Epilobium ciliatum
hoary tansyaster Machaeranthera canescens
hookedspur violet Viola adunca
Hornemann's willowherb Epilobium hornemannii
lacy tansyaster Machaeranthera pinnatifida
lanceleaf sage Salvia reflexa
lesser spikemoss Selaginella densa
Louisiana vetch Vicia ludoviciana
meadow deathcamas Zigadenus venenosus
mealy goosefoot Chenopodium incanum
Menzies' campion Silene menziesii
milkflower willowherb Epilobium lactiflorum
mountain tansymustard Descurainia incana
mountain tarweed Madia glomerata
narrowleaf four o'clock Mirabilis linearis
Norway sedge Carex norvegica
pinyon goosefoot Chenopodium atrovirens
plains springparsley Cymopterus acaulis
pleated gentian Gentiana affinis
Porter brome Bromus porteri
povertyweed Iva axillaris
purple reedgrass Calamagrostis purpurascens
pygmyflower rockjasmine Androsace septentrionalis
redwhisker clammyweed Polanisia dodecandra
ribseed sandmat Chamaesyce glyptosperma
Rocky Mountain fescue Festuca saximontana
rosy pussytoes Antennaria rosea
sagebrush violet Viola vallicola
scrambled eggs Corydalis aurea
shaggy fleabane Erigeron pumilus
sidebells wintergreen Orthilia secunda
single delight Moneses uniflora
slender phlox Microsteris gracilis
small-leaf pussytoes Antennaria parvifolia
snowline wintergreen Pyrola minor
spearleaf stonecrop Sedum lanceolatum
spreading fleabane Erigeron divergens
starry false lily of the valley Maianthemum stellatum
stream orchid Epipactis gigantea
tall annual willowherb Epilobium brachycarpum
tarragon Artemisia dracunculus
tiny trumpet Collomia linearis
tobacco root Valeriana edulis
tower rockcress Arabis glabra
trailing fleabane Erigeron flagellaris
Virginia groundcherry Physalis virginiana
Virginia strawberry Fragaria virginiana
wedgeleaf draba Draba cuneifolia
western poison ivy Toxicodendron rydbergii
western tansymustard Descurainia pinnata
whitest evening primrose Oenothera albicaulis
whitestem blazingstar Mentzelia albicaulis
witchgrass Panicum capillare
wood bluegrass Poa nemoralis
woolly cinquefoil Potentilla hippiana

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.

claspleaf twistedstalkStreptopus amplexifolius
common reedPhragmites australis
Kentucky bluegrassPoa pratensis

Compared with Colorado

The typical county is the median of the 63 Colorado 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, Delta County and Colorado
Measure	Delta County	Typical county	Statewide
Native species	248	237	1,119
Garden-ready natives	169	148	585
Tree	22	—	66
Shrub	32	—	92
Wildflower (forb)	134	—	626
Grass or grass-like	52	—	278
Vine	4	—	20
Fern	4	—	37

Neighboring counties

Counties that share a ZIP code with Delta County.

Gunnison County, CO 271 garden-ready
Montrose County, CO 220 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: Delta County (county FIPS 08029), Colorado. 248 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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