Native plants · Colorado
Native plants of Weld County
332 plant species are recorded as native to Colorado in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Weld County by USDA PLANTS. 159 of them have growing records you can filter by light, moisture, height and estimated cold hardiness. 2 more species are listed as both native and introduced and kept in a separate section.
County summary · USDA PLANTS and Kew WCVP
Weld County, Colorado
- Native species
- 332 Typical Colorado county: 237 (median of 63 counties)
- Garden-ready natives
- 159 Typical Colorado county: 148
- Share by type (all 332 native species)
-
Percent of the 332 native species in each growth type
Wildflowers make up the largest share of the native list (63%), followed by grasses and grass-like plants (25%).
The native plant list
Garden-ready natives 159
Native species with PLANTS growing records (height, light, moisture, minimum temperature). “—” means PLANTS has no value.
| 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 |
| American licorice Glycyrrhiza lepidota | Wildflower (forb) | 4 ft | Sun–part shade | High | Zone 3b |
| American vetch Vicia americana | Vine | 1.3 ft | Sun | Low | Zone 3b |
| American water horehound Lycopus americanus | Wildflower (forb) | 1.8 ft | Shade-tolerant | High | Zone 3b |
| analogue sedge Carex simulata | Grass or grass-like | 1.5 ft | Sun–part shade | High | Zone 3b |
| arumleaf arrowhead Sagittaria cuneata | Wildflower (forb) | 2.6 ft | Sun | Medium | Zone 4a |
| Bigelow's tansyaster Machaeranthera bigelovii | Wildflower (forb) | 4 ft | Sun | Low | Zone 10b |
| blue grama Bouteloua gracilis | Grass or grass-like | 1 ft | Sun | Medium | Zone 3a |
| bog willowherb Epilobium leptophyllum | Wildflower (forb) | 3.6 ft | Sun–part shade | High | Zone 4a |
| broadbeard beardtongue Penstemon angustifolius | Wildflower (forb) | 3 ft | Sun | Low | Zone 4b |
| broadleaf arrowhead Sagittaria latifolia | Wildflower (forb) | 4.9 ft | Sun | High | Zone 4a |
| broom snakeweed Gutierrezia sarothrae | Shrub | 1.5 ft | Sun | Medium | Zone 3b |
| buffalograss Bouteloua dactyloides | Grass or grass-like | 6 in | Sun | Medium | Zone 3b |
| Canada germander Teucrium canadense | Wildflower (forb) | 3.3 ft | Sun–part shade | High | Zone 3a |
| Canada goldenrod Solidago altissima | Wildflower (forb) | 5 ft | Sun–part shade | Medium | Zone 4b |
| 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 |
| 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 |
| 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 |
| crested pricklypoppy Argemone polyanthemos | Wildflower (forb) | 3 ft | Sun | Low | Zone 5a |
| 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 |
| devil's beggartick Bidens frondosa | Wildflower (forb) | 4 ft | Sun–part shade | Medium | Zone 12a |
| dotted blazing star Liatris punctata | Wildflower (forb) | 2 ft | Sun | Medium | Zone 3a |
| downy paintedcup Castilleja sessiliflora | Wildflower (forb) | 1.3 ft | Sun | Low | Zone 3b |
| dwarf spikerush Eleocharis parvula | Grass or grass-like | 1.2 ft | Sun | Medium | Zone 3b |
| eastern cottonwood Populus deltoides | Tree | 190 ft | Sun | High | Zone 3a |
| false indigo bush Amorpha fruticosa | Shrub | 15 ft | Sun | Low | Zone 3b |
| fiddleleaf hawksbeard Crepis runcinata | Wildflower (forb) | 1 ft | Sun | Medium | Zone 3b |
| flatstem spikerush Eleocharis compressa | Grass or grass-like | 2 ft | Sun | High | Zone 4a |
| foothill arnica Arnica fulgens | Wildflower (forb) | 2 ft | Shade-tolerant | Medium | Zone 4b |
| 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 |
| Gardner's saltbush Atriplex gardneri | Shrub | 4 ft | Sun | Low | Zone 3b |
| 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 |
| granite prickly phlox Linanthus pungens | Wildflower (forb) | 2 ft | Shade-tolerant | Low | Zone 4a |
| green needlegrass Nassella viridula | Grass or grass-like | 2 ft | Sun | Low | Zone 3b |
| hairy false goldenaster Heterotheca villosa | Wildflower (forb) | 3 ft | Sun | Low | Zone 4a |
| 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 |
| Idaho blue-eyed grass Sisyrinchium idahoense | Wildflower (forb) | 1.7 ft | Shade-tolerant | High | Zone 3b |
| Indian ricegrass Achnatherum hymenoides | Grass or grass-like | 2 ft | Sun | Low | Zone 3a |
| Indianhemp Apocynum cannabinum | Wildflower (forb) | 3.3 ft | Sun–part shade | High | Zone 3a |
| inland rush Juncus interior | Grass or grass-like | 3 ft | Sun–part shade | Medium | Zone 3b |
| knotted rush Juncus nodosus | Grass or grass-like | 2 ft | Sun | Medium | Zone 4b |
| largeflower hawksbeard Crepis occidentalis | Wildflower (forb) | 11 in | Sun | Low | Zone 5a |
| leafy pondweed Potamogeton foliosus | Wildflower (forb) | — | Sun | High | Zone 3b |
| lemonscent Pectis angustifolia | Wildflower (forb) | 8 in | Sun | Low | Zone 5a |
| 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 |
| littleseed ricegrass Piptatheropsis micrantha | Grass or grass-like | 2.5 ft | Sun | Low | Zone 3b |
| longbeak buttercup Ranunculus longirostris | Wildflower (forb) | 1 ft | Shade-tolerant | High | Zone 4b |
| 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 |
| Malabar sprangletop Leptochloa fusca | Grass or grass-like | 3.3 ft | Sun | High | Zone 3a |
| marsh muhly Muhlenbergia racemosa | Grass or grass-like | 3 ft | Shade-tolerant | Medium | Zone 3b |
| Missouri goldenrod Solidago missouriensis | Wildflower (forb) | 3 ft | Sun–part shade | Low | Zone 3b |
| narrowleaf cottonwood Populus angustifolia | Tree | 60 ft | Sun | High | Zone 4b |
| narrowleaf water plantain Alisma gramineum | Wildflower (forb) | 1.5 ft | Sun | High | Zone 3a |
| 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 |
| nodding beggartick Bidens cernua | Wildflower (forb) | 3.2 ft | Sun–part shade | High | Zone 12a |
| Nuttall's povertyweed Monolepis nuttalliana | Wildflower (forb) | 10 in | Sun | Medium | Zone 12a |
| pale agoseris Agoseris glauca | Shrub | 1 ft | Sun | Medium | Zone 4a |
| peachleaf willow Salix amygdaloides | Tree | 60 ft | Sun | High | Zone 4a |
| Pennsylvania smartweed Polygonum pensylvanicum | Wildflower (forb) | 3.9 ft | Sun | Medium | Zone 10b |
| plains pricklypear Opuntia polyacantha | Shrub | 2 ft | Sun | Low | Zone 4b |
| Platte River cinquefoil Potentilla plattensis | Wildflower (forb) | 6 in | Sun–part shade | Medium | Zone 3b |
| poverty rush Juncus tenuis | Grass or grass-like | 1.5 ft | Sun–part shade | Medium | Zone 3b |
| prairie cordgrass Spartina pectinata | Grass or grass-like | 8 ft | Sun | High | Zone 3b |
| 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 sandreed Calamovilfa longifolia | Grass or grass-like | 4.5 ft | Sun | Medium | Zone 3b |
| prairie wedgescale Sphenopholis obtusata | Grass or grass-like | 3.2 ft | Sun–part shade | Medium | Zone 3a |
| purple locoweed Oxytropis lambertii | Wildflower (forb) | 1.4 ft | Sun | Low | Zone 3b |
| purple milkvetch Astragalus agrestis | Wildflower (forb) | 1 ft | Sun | Low | Zone 4a |
| purple prairie clover Dalea purpurea | Wildflower (forb) | 3 ft | Sun | Medium | Zone 3b |
| purple threeawn Aristida purpurea | Grass or grass-like | 1.4 ft | Sun | Low | Zone 4a |
| red goosefoot Chenopodium rubrum | Wildflower (forb) | 3 ft | Sun | High | Zone 12b |
| reed canarygrass Phalaris arundinacea | Grass or grass-like | 5 ft | Sun | High | Zone 3b |
| rice cutgrass Leersia oryzoides | Grass or grass-like | 4.9 ft | Sun | High | Zone 4a |
| 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 |
| 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 bugleweed Lycopus asper | Wildflower (forb) | 2.1 ft | Shade-tolerant | High | Zone 3b |
| rubber rabbitbrush Ericameria nauseosa | Shrub | 4 ft | Sun | Medium | Zone 3b |
| sago pondweed Stuckenia pectinata | Wildflower (forb) | — | Sun | High | Zone 3b |
| saltgrass Distichlis spicata | Grass or grass-like | 1.1 ft | Sun | Medium | Zone 3b |
| sand bluestem Andropogon hallii | Grass or grass-like | 6.1 ft | Sun | Medium | Zone 3b |
| sand dropseed Sporobolus cryptandrus | Grass or grass-like | 3 ft | Sun | Low | Zone 3b |
| sand lovegrass Eragrostis trichodes | Grass or grass-like | 3.5 ft | Sun | Medium | Zone 5a |
| sandcherry Prunus pumila | Shrub | 6 ft | Shade-tolerant | Low | Zone 4a |
| 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 globemallow Sphaeralcea coccinea | Wildflower (forb) | 1.5 ft | Sun | Low | Zone 5a |
| 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 |
| 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 |
| 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 |
| 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 |
| smooth blue aster Symphyotrichum laeve | Wildflower (forb) | 4 ft | Sun | Medium | Zone 3a |
| smooth horsetail Equisetum laevigatum | Fern | 5 ft | Sun | Low | Zone 3b |
| soapweed yucca Yucca glauca | Shrub | 1 ft | Sun | Low | Zone 4b |
| softstem bulrush Schoenoplectus tabernaemontani | Grass or grass-like | 9 ft | Sun | High | Zone 3b |
| spineless horsebrush Tetradymia canescens | Shrub | 4 ft | Sun | Low | Zone 9a |
| spotted joe pye weed Eutrochium maculatum | Wildflower (forb) | 6 ft | Sun–part shade | High | Zone 4b |
| spreading yellowcress Rorippa sinuata | Wildflower (forb) | 1 ft | Sun | Medium | Zone 3b |
| squirreltail Elymus elymoides | Grass or grass-like | 1.5 ft | Sun | Low | Zone 3a |
| stiff goldenrod Oligoneuron rigidum | Wildflower (forb) | 3.6 ft | Sun–part shade | Medium | Zone 3a |
| swamp milkweed Asclepias incarnata | Wildflower (forb) | 4.9 ft | Sun | High | Zone 3b |
| switchgrass Panicum virgatum | Grass or grass-like | 5 ft | Sun | Medium | Zone 3a |
| tall fringed bluebells Mertensia ciliata | Wildflower (forb) | 2 ft | Sun–part shade | High | Zone 5a |
| tanseyleaf tansyaster Machaeranthera tanacetifolia | Wildflower (forb) | 2 ft | Sun | Medium | Zone 4a |
| tapertip flatsedge Cyperus acuminatus | Grass or grass-like | 1.3 ft | Sun–part shade | High | Zone 3b |
| teal lovegrass Eragrostis hypnoides | Grass or grass-like | 4 in | Sun | High | Zone 3b |
| tenpetal blazingstar Mentzelia decapetala | Wildflower (forb) | 3.5 ft | Sun | Medium | Zone 3b |
| textile onion Allium textile | Wildflower (forb) | 1 ft | Sun–part shade | Medium | Zone 3b |
| thickspike wheatgrass Elymus lanceolatus | Grass or grass-like | 2.3 ft | Sun | Low | Zone 3b |
| threadleaf sedge Carex filifolia | Grass or grass-like | 1.2 ft | Sun | Low | Zone 3b |
| threelobe beggarticks Bidens tripartita | Wildflower (forb) | 3.5 ft | Sun–part shade | High | Zone 12a |
| threetooth ragwort Packera tridenticulata | Wildflower (forb) | 3 ft | Sun | Medium | Zone 5a |
| thrift mock goldenweed Stenotus armerioides | Wildflower (forb) | 1 ft | Sun | Low | Zone 5a |
| toad rush Juncus bufonius | Grass or grass-like | 1 ft | Sun | Medium | Zone 12a |
| Torrey's rush Juncus torreyi | Grass or grass-like | 3.1 ft | Sun | Medium | Zone 3b |
| upright prairie coneflower Ratibida columnifera | Wildflower (forb) | 3.1 ft | Sun | Medium | Zone 3a |
| Utah sweetvetch Hedysarum boreale | Wildflower (forb) | 2 ft | Sun | Medium | Zone 3b |
| water knotweed Polygonum amphibium | Wildflower (forb) | 1 in | Sun | High | Zone 5a |
| waterthread pondweed Potamogeton diversifolius | Wildflower (forb) | 3.2 ft | Sun | High | Zone 3b |
| wax currant Ribes cereum | Shrub | 3 ft | Sun | Low | Zone 5a |
| western pearly everlasting Anaphalis margaritacea | Wildflower (forb) | 3 ft | Sun–part shade | Medium | Zone 3a |
| western snowberry Symphoricarpos occidentalis | Shrub | 3 ft | Sun–part shade | Low | Zone 3b |
| 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 panicle aster Symphyotrichum lanceolatum | Wildflower (forb) | 6 ft | Sun–part shade | High | Zone 3b |
| white prairie clover Dalea candida | Wildflower (forb) | 2 ft | Sun–part shade | Medium | Zone 3b |
| white sagebrush Artemisia ludoviciana | Wildflower (forb) | 3 ft | Sun | Low | Zone 4a |
| winterfat Krascheninnikovia lanata | Shrub | 2 ft | Sun | Low | Zone 2a |
| woolly locoweed Astragalus mollissimus | Wildflower (forb) | 2 ft | Sun | Low | Zone 4b |
| woolly plantain Plantago patagonica | Wildflower (forb) | 6 in | Sun | Low | Zone 12b |
| yerba mansa Anemopsis californica | Wildflower (forb) | 1.5 ft | Sun | High | Zone 9b |
No garden-ready natives match these filters. Try clearing one.
Other native species recorded here 173
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.
Hidden while “Garden-ready only” is on.
- American bugseed Corispermum americanum
- American dragonhead Dracocephalum parviflorum
- annual buckwheat Eriogonum annuum
- aridland goosefoot Chenopodium desiccatum
- Aunt Lucy Ellisia nyctelea
- ballhead ipomopsis Ipomopsis congesta
- bearded flatsedge Cyperus squarrosus
- biannual lettuce Lactuca ludoviciana
- big devils beggartick Bidens vulgata
- bigbract verbena Verbena bracteata
- bighead pygmycudweed Evax prolifera
- bigseed alfalfa dodder Cuscuta indecora
- bitter fleabane Erigeron acris
- blowout grass Redfieldia flexuosa
- blue mudplantain Heteranthera limosa
- bluntleaf yellowcress Rorippa curvipes
- bog yellowcress Rorippa palustris
- brittle pricklypear Opuntia fragilis
- brook cinquefoil Potentilla rivalis
- bushy knotweed Polygonum ramosissimum
- Canadian anemone Anemone canadensis
- carelessweed Cyclachaena xanthiifolia
- Carolina draba Draba reptans
- Carolina larkspur Delphinium carolinianum
- chairmaker's bulrush Schoenoplectus americanus
- clustered broomrape Orobanche fasciculata
- common starlily Leucocrinum montanum
- cottonbatting plant Pseudognaphalium stramineum
- Cuman ragweed Ambrosia psilostachya
- curlycup gumweed Grindelia squarrosa
- curlytop knotweed Polygonum lapathifolium
- cutleaf nightshade Solanum triflorum
- desert goosefoot Chenopodium pratericola
- Drummond's false pennyroyal Hedeoma drummondii
- dryspike sedge Carex siccata
- Dudley's rush Juncus dudleyi
- Emory's sedge Carex emoryi
- entireleaved thelypody Thelypodium integrifolium
- false buffalograss Munroa squarrosa
- feather fingergrass Chloris virgata
- fetid marigold Dyssodia papposa
- fineleaf hymenopappus Hymenopappus filifolius
- flatspine bur ragweed Ambrosia acanthicarpa
- flatspine stickseed Lappula occidentalis
- Flodman's thistle Cirsium flodmanii
- foothill bladderpod Lesquerella ludoviciana
- foxtail barley Hordeum jubatum
- Fremont's goosefoot Chenopodium fremontii
- fringed loosestrife Lysimachia ciliata
- fringed willowherb Epilobium ciliatum
- Geyer's sandmat Chamaesyce geyeri
- grand redstem Ammannia robusta
- great blue lobelia Lobelia siphilitica
- green comet milkweed Asclepias viridiflora
- groundplum milkvetch Astragalus crassicarpus
- hairy four o'clock Mirabilis hirsuta
- hairy hedgenettle Stachys pilosa
- hairy waterclover Marsilea vestita
- hedge false bindweed Calystegia sepium
- hoary tansyaster Machaeranthera canescens
- hoary verbena Verbena stricta
- Hopi tea greenthread Thelesperma megapotamicum
- horned pondweed Zannichellia palustris
- ivyleaf groundcherry Physalis hederifolia
- James' cryptantha Cryptantha cinerea
- lacy tansyaster Machaeranthera pinnatifida
- lanceleaf sage Salvia reflexa
- large Indian breadroot Pediomelum esculentum
- Laxmann's milkvetch Astragalus laxmannii
- lemon scurfpea Psoralidium lanceolatum
- long-stolon sedge Carex inops
- Louisiana broomrape Orobanche ludoviciana
- Macoun's barley ×Elyhordeum macounii
- marsh skullcap Scutellaria galericulata
- mat sandbur Cenchrus longispinus
- matted sandmat Chamaesyce serpens
- meadow deathcamas Zigadenus venenosus
- mealy goosefoot Chenopodium incanum
- Modoc yellowcress Rorippa tenerrima
- narrowleaf four o'clock Mirabilis linearis
- narrowleaf goosefoot Chenopodium leptophyllum
- narrowleaf stoneseed Lithospermum incisum
- neckweed Veronica peregrina
- needleleaf sedge Carex duriuscula
- northern bog violet Viola nephrophylla
- Norwegian cinquefoil Potentilla norvegica
- Oregon cliff fern Woodsia oregana
- painted milkvetch Astragalus ceramicus
- pale dock Rumex altissimus
- Paradox cinquefoil Potentilla paradoxa
- Pennsylvania cinquefoil Potentilla pensylvanica
- pinyon goosefoot Chenopodium atrovirens
- pitseed goosefoot Chenopodium berlandieri
- plains bluegrass Poa arida
- plains snakecotton Froelichia floridana
- plains springparsley Cymopterus acaulis
- pony beebalm Monarda pectinata
- povertyweed Iva axillaris
- prairie groundcherry Physalis hispida
- prairie groundsel Packera plattensis
- prairie sandmat Chamaesyce missurica
- prairie spiderwort Tradescantia occidentalis
- prairie sunflower Helianthus petiolaris
- purple meadow-rue Thalictrum dasycarpum
- Pursh seepweed Suaeda calceoliformis
- rayless alkali aster Symphyotrichum ciliatum
- redwhisker clammyweed Polanisia dodecandra
- redwool plantain Plantago eriopoda
- ribseed sandmat Chamaesyce glyptosperma
- River Broom-Rape Orobanche riparia
- rough false pennyroyal Hedeoma hispida
- rush skeletonplant Lygodesmia juncea
- rusty lupine Lupinus pusillus
- sand sagebrush Artemisia filifolia
- sanddune cryptantha Cryptantha fendleri
- sandhill amaranth Amaranthus arenicola
- Sartwell's sedge Carex sartwellii
- scarlet beeblossom Oenothera suffrutescens
- Schweinitz's flatsedge Cyperus schweinitzii
- seaside arrowgrass Triglochin maritima
- shaggy dwarf morning-glory Evolvulus nuttallianus
- shaggy fleabane Erigeron pumilus
- shortbeak sedge Carex brevior
- shortray fleabane Erigeron lonchophyllus
- shortseed waterwort Elatine brachysperma
- silky prairie clover Dalea villosa
- silverleaf Indian breadroot Pediomelum argophyllum
- sixweeks fescue Vulpia octoflora
- skeletonleaf bur ragweed Ambrosia tomentosa
- slender lipfern Cheilanthes feei
- slender phlox Microsteris gracilis
- slenderleaf false foxglove Agalinis tenuifolia
- slickseed fuzzybean Strophostyles leiosperma
- slimflower scurfpea Psoralidium tenuiflorum
- small-leaf pussytoes Antennaria parvifolia
- snowball sand verbena Abronia fragrans
- spiny milkvetch Astragalus kentrophyta
- spiny phlox Phlox hoodii
- spinystar Escobaria vivipara
- spotted water hemlock Cicuta maculata
- starry false lily of the valley Maianthemum stellatum
- stemless four-nerve daisy Tetraneuris acaulis
- stemless Townsend daisy Townsendia exscapa
- stiffstem flax Linum rigidum
- strict blue-eyed grass Sisyrinchium montanum
- summer coralroot Corallorhiza maculata
- swamp verbena Verbena hastata
- tarragon Artemisia dracunculus
- Texas croton Croton texensis
- threenerve goldenrod Solidago velutina
- trailing fleabane Erigeron flagellaris
- tufted lovegrass Eragrostis pectinacea
- tumblegrass Schedonnardus paniculatus
- twistspine pricklypear Opuntia macrorhiza
- variegated scouringrush Equisetum variegatum
- veiny dock Rumex venosus
- velvetweed Oenothera curtiflora
- velvety goldenrod Solidago mollis
- Virginia groundcherry Physalis virginiana
- water mudwort Limosella aquatica
- water whorlgrass Catabrosa aquatica
- wedgeleaf Phyla cuneifolia
- western marsh cudweed Gnaphalium palustre
- western tansymustard Descurainia pinnata
- white heath aster Symphyotrichum ericoides
- white prairie aster Symphyotrichum falcatum
- whitest evening primrose Oenothera albicaulis
- whitestem blazingstar Mentzelia albicaulis
- winged pigweed Cycloloma atriplicifolium
- witchgrass Panicum capillare
- wood bluegrass Poa nemoralis
- woolly cinquefoil Potentilla hippiana
- woolly sedge Carex pellita
Also listed as native and introduced here 2
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
- 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.
| Measure | Weld County | Typical county | Statewide |
|---|---|---|---|
| Native species | 332 | 237 | 1,119 |
| Garden-ready natives | 159 | 148 | 585 |
| Tree | 9 | — | 66 |
| Shrub | 21 | — | 92 |
| Wildflower (forb) | 210 | — | 626 |
| Grass or grass-like | 82 | — | 278 |
| Vine | 5 | — | 20 |
| Fern | 5 | — | 37 |
Neighboring counties
Counties that share a ZIP code with Weld County.
- Adams County, CO 55 garden-ready
- Boulder County, CO 387 garden-ready
- Larimer County, CO 340 garden-ready
- Morgan County, CO 53 garden-ready
- Laramie County, WY 236 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
- Weld County (county FIPS 08123), Colorado. 332 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