Native plants · North Dakota

Native plants of Williams County

390 plant species are recorded as native to North Dakota in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Williams County by USDA PLANTS. 201 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

Williams County, North Dakota

Native species: 390 Typical North Dakota county: 287 (median of 53 counties)
Garden-ready natives: 201 Typical North Dakota county: 143
Share by type (all 390 native species): Percent of the 390 native species in each growth type

Tree 6% (22)
Shrub 7% (28)
Wildflower (forb) 58% (228)
Grass or grass-like 25% (97)
Vine 2% (9)
Fern 2% (6)

Wildflowers make up the largest share of the native list (58%), followed by grasses and grass-like plants (25%).

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 3b to 4a (2023 map).

The native plant list

Garden-ready natives 201

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

Garden-ready native plants of Williams County, North Dakota
Plant	Type	Height	Light	Water use	Hardy to
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
American bittersweet Celastrus scandens	Vine	15 ft	Shade-tolerant	High	Zone 3b
American black currant Ribes americanum	Shrub	3 ft	—	—	Zone 2b
American elm Ulmus americana	Tree	120 ft	Sun–part shade	High	Zone 2b
American hazelnut Corylus americana	Shrub	10 ft	Sun–part shade	Medium	Zone 4a
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 red raspberry Rubus idaeus	Shrub	6 ft	Shade-tolerant	—	Zone 1a
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
arumleaf arrowhead Sagittaria cuneata	Wildflower (forb)	2.6 ft	Sun	Medium	Zone 4a
balsam poplar Populus balsamifera	Tree	80 ft	Sun	High	Zone 1a
big bluestem Andropogon gerardii	Grass or grass-like	6 ft	Sun	Low	Zone 2b
bigseed biscuitroot Lomatium macrocarpum	Wildflower (forb)	6 in	Sun	Low	Zone 4b
blanketflower Gaillardia aristata	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
blue grama Bouteloua gracilis	Grass or grass-like	1 ft	Sun	Medium	Zone 3a
bluebunch wheatgrass Pseudoroegneria spicata	Grass or grass-like	3 ft	Sun	Low	Zone 3b
bog willowherb Epilobium leptophyllum	Wildflower (forb)	3.6 ft	Sun–part shade	High	Zone 4a
boxelder Acer negundo	Tree	60 ft	Shade-tolerant	Medium	Zone 2b
broadfruit bur-reed Sparganium eurycarpum	Wildflower (forb)	4.9 ft	Sun–part shade	High	Zone 4a
broadleaf arrowhead Sagittaria latifolia	Wildflower (forb)	4.9 ft	Sun	High	Zone 4a
broadleaf cattail Typha latifolia	Wildflower (forb)	5 ft	Sun–part shade	High	Zone 3b
broom snakeweed Gutierrezia sarothrae	Shrub	1.5 ft	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 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 mare's-tail Hippuris vulgaris	Wildflower (forb)	2.8 ft	Sun	High	Zone 3b
common rivergrass Scolochloa festucacea	Grass or grass-like	4.9 ft	Sun	High	Zone 3b
common sneezeweed Helenium autumnale	Wildflower (forb)	4.9 ft	Sun	Medium	Zone 3a
common snowberry Symphoricarpos albus	Shrub	3 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
coon's tail Ceratophyllum demersum	Wildflower (forb)	—	Sun–part shade	High	Zone 3b
cosmopolitan bulrush Bolboschoenus maritimus	Grass or grass-like	3.2 ft	Sun	Medium	Zone 5a
creeping juniper Juniperus horizontalis	Shrub	4 ft	Sun	High	Zone 3a
crested sedge Carex cristatella	Grass or grass-like	3 ft	Shade-tolerant	High	Zone 4a
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
drooping woodreed Cinna latifolia	Grass or grass-like	4.5 ft	Sun–part shade	High	Zone 3b
eastern cottonwood Populus deltoides	Tree	190 ft	Sun	High	Zone 3a
fiddleleaf hawksbeard Crepis runcinata	Wildflower (forb)	1 ft	Sun	Medium	Zone 3b
field horsetail Equisetum arvense	Fern	11 in	Sun–part shade	High	Zone 3a
field pussytoes Antennaria neglecta	Wildflower (forb)	1 ft	Sun	Low	Zone 3b
fireweed Chamerion angustifolium	Wildflower (forb)	5.5 ft	Sun–part shade	High	Zone 3b
flatstem pondweed Potamogeton zosteriformis	Wildflower (forb)	—	Sun	High	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
fowl bluegrass Poa palustris	Grass or grass-like	4 ft	Sun–part shade	Medium	Zone 3b
fox sedge Carex vulpinoidea	Grass or grass-like	3.2 ft	Sun–part shade	Medium	Zone 3b
fringed brome Bromus ciliatus	Grass or grass-like	4 ft	Shade-tolerant	Medium	Zone 7a
Gardner's saltbush Atriplex gardneri	Shrub	4 ft	Sun	Low	Zone 3b
giant goldenrod Solidago gigantea	Wildflower (forb)	8.2 ft	Sun–part shade	Medium	Zone 4a
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
gray goldenrod Solidago nemoralis	Wildflower (forb)	2 ft	Sun	Medium	Zone 4a
greasewood Sarcobatus vermiculatus	Shrub	10 ft	Sun	Low	Zone 3b
green ash Fraxinus pennsylvanica	Tree	80 ft	Shade-tolerant	Medium	Zone 2b
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
hardstem bulrush Schoenoplectus acutus	Grass or grass-like	9.8 ft	Sun	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
lambstongue ragwort Senecio integerrimus	Wildflower (forb)	1.1 ft	Sun–part shade	Medium	Zone 3b
Lewis flax Linum lewisii	Wildflower (forb)	2.5 ft	Sun	Medium	Zone 3b
little bluestem Schizachyrium scoparium	Grass or grass-like	3 ft	Sun	Low	Zone 3b
littleleaf buttercup Ranunculus abortivus	Wildflower (forb)	2.8 ft	Shade-tolerant	Medium	Zone 3a
littleseed ricegrass Piptatheropsis micrantha	Grass or grass-like	2.5 ft	Sun	Low	Zone 3b
longleaf starwort Stellaria longifolia	Wildflower (forb)	1.5 ft	Shade-tolerant	High	Zone 3b
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
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
Missouri goldenrod Solidago missouriensis	Wildflower (forb)	3 ft	Sun–part shade	Low	Zone 3b
Missouri River willow Salix eriocephala	Tree	52 ft	Shade-tolerant	High	Zone 3b
narrowleaf water plantain Alisma gramineum	Wildflower (forb)	1.5 ft	Sun	High	Zone 3a
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
northern bedstraw Galium boreale	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 4a
Nuttall's alkaligrass Puccinellia nuttalliana	Grass or grass-like	10 in	Sun	Medium	Zone 3b
Nuttall's povertyweed Monolepis nuttalliana	Wildflower (forb)	10 in	Sun	Medium	Zone 12a
Nuttall's sunflower Helianthus nuttallii	Wildflower (forb)	10 ft	Sun	Medium	Zone 3b
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
peachleaf willow Salix amygdaloides	Tree	60 ft	Sun	High	Zone 4a
Philadelphia fleabane Erigeron philadelphicus	Wildflower (forb)	2.8 ft	Sun–part shade	Medium	Zone 4b
pin cherry Prunus pensylvanica	Tree	30 ft	Sun	Medium	Zone 3b
plains muhly Muhlenbergia cuspidata	Grass or grass-like	1.4 ft	Sun	Low	Zone 3b
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
porcupinegrass Hesperostipa spartea	Grass or grass-like	4 ft	Sun	Medium	Zone 3b
prairie cordgrass Spartina pectinata	Grass or grass-like	8 ft	Sun	High	Zone 3b
prairie dropseed Sporobolus heterolepis	Grass or grass-like	2.3 ft	Sun–part shade	Low	Zone 3b
prairie fleabane Erigeron strigosus	Wildflower (forb)	3 ft	Sun	Medium	Zone 4b
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
quaking aspen Populus tremuloides	Tree	65 ft	Sun	High	Zone 1a
red goosefoot Chenopodium rubrum	Wildflower (forb)	3 ft	Sun	High	Zone 12b
red swampfire Salicornia rubra	Wildflower (forb)	1 ft	Sun	Medium	Zone 12b
redosier dogwood Cornus sericea	Tree	12 ft	Sun	High	Zone 3b
reed canarygrass Phalaris arundinacea	Grass or grass-like	5 ft	Sun	High	Zone 3b
river bulrush Bolboschoenus fluviatilis	Grass or grass-like	6.6 ft	Sun	Medium	Zone 3b
riverbank grape Vitis riparia	Vine	45 ft	Sun–part shade	Medium	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
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
roundleaf serviceberry Amelanchier sanguinea	Tree	10 ft	Shade-tolerant	Medium	Zone 3a
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
sandbar willow Salix interior	Tree	30 ft	Sun	—	Zone 1a
Sandberg bluegrass Poa secunda	Grass or grass-like	1.4 ft	Sun–part shade	Low	Zone 3b
sandcherry Prunus pumila	Shrub	6 ft	Shade-tolerant	Low	Zone 4a
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
shining willow Salix lucida	Tree	13 ft	Sun–part shade	High	Zone 3a
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
sideoats grama Bouteloua curtipendula	Grass or grass-like	3 ft	Sun	Medium	Zone 3a
silver buffaloberry Shepherdia argentea	Tree	18 ft	Sun–part shade	Medium	Zone 3b
silver sagebrush Artemisia cana	Shrub	5 ft	Sun	Low	Zone 3a
silverberry Elaeagnus commutata	Shrub	12 ft	Sun	Low	Zone 3b
silverweed cinquefoil Argentina anserina	Wildflower (forb)	6 in	Shade-tolerant	High	Zone 5a
silvery lupine Lupinus argenteus	Wildflower (forb)	1.5 ft	Sun	Low	Zone 3a
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 floating mannagrass Glyceria borealis	Grass or grass-like	4.9 ft	Sun	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
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
spreading yellowcress Rorippa sinuata	Wildflower (forb)	1 ft	Sun	Medium	Zone 3b
star duckweed Lemna trisulca	Wildflower (forb)	4 in	Sun	High	Zone 3b
stiff goldenrod Oligoneuron rigidum	Wildflower (forb)	3.6 ft	Sun–part shade	Medium	Zone 3a
sweet woodreed Cinna arundinacea	Grass or grass-like	4.9 ft	Shade-tolerant	Low	Zone 4a
switchgrass Panicum virgatum	Grass or grass-like	5 ft	Sun	Medium	Zone 3a
tall cinquefoil Potentilla arguta	Wildflower (forb)	3 ft	Sun–part shade	Medium	Zone 3b
tall cottongrass Eriophorum angustifolium	Grass or grass-like	2 ft	Sun	High	Zone 3a
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
threepetal bedstraw Galium trifidum	Vine	10 in	Sun–part shade	High	Zone 3b
thrift mock goldenweed Stenotus armerioides	Wildflower (forb)	1 ft	Sun	Low	Zone 5a
tiny mousetail Myosurus minimus	Wildflower (forb)	5 in	Sun–part shade	Medium	Zone 12b
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
troublesome sedge Carex molesta	Grass or grass-like	3 ft	Sun	Medium	Zone 3b
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
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
variableleaf pondweed Potamogeton gramineus	Wildflower (forb)	—	Sun	High	Zone 3b
Virginia wildrye Elymus virginicus	Grass or grass-like	2.5 ft	Shade-tolerant	Medium	Zone 4b
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 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
wheat sedge Carex atherodes	Grass or grass-like	5 ft	Sun	High	Zone 3b
white doll's daisy Boltonia asteroides	Wildflower (forb)	8 ft	Sun–part shade	Medium	Zone 3b
white meadowsweet Spiraea alba	Shrub	3 ft	Sun–part shade	Medium	Zone 4a
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
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
winterfat Krascheninnikovia lanata	Shrub	2 ft	Sun	Low	Zone 2a
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
woolly plantain Plantago patagonica	Wildflower (forb)	6 in	Sun	Low	Zone 12b
yellow owl's-clover Orthocarpus luteus	Wildflower (forb)	1.5 ft	Sun	Low	Zone 12b

Other native species recorded here 189

PLANTS has no growing records for these, so light, moisture, height and zone filters cannot include them. Many are wild species seldom sold by nurseries.

American bird's-foot trefoil Lotus unifoliolatus
American mannagrass Glyceria grandis
American sloughgrass Beckmannia syzigachne
aromatic aster Symphyotrichum oblongifolium
Aunt Lucy Ellisia nyctelea
autumn dwarf gentian Gentianella amarella
bald spikerush Eleocharis erythropoda
ballhead ipomopsis Ipomopsis congesta
bastard toadflax Comandra umbellata
bearded flatsedge Cyperus squarrosus
Bebb willow Salix bebbiana
biannual lettuce Lactuca ludoviciana
big devils beggartick Bidens vulgata
bigbract verbena Verbena bracteata
blue giant hyssop Agastache foeniculum
bluntleaf sandwort Moehringia lateriflora
bog yellowcress Rorippa palustris
brittle bladderfern Cystopteris fragilis
brittle pricklypear Opuntia fragilis
brook cinquefoil Potentilla rivalis
bushy knotweed Polygonum ramosissimum
Canadian anemone Anemone canadensis
Canadian gooseberry Ribes oxyacanthoides
candle anemone Anemone cylindrica
carelessweed Cyclachaena xanthiifolia
clammy groundcherry Physalis heterophylla
clammy hedgehyssop Gratiola neglecta
clustered broomrape Orobanche fasciculata
common bladderwort Utricularia macrorhiza
common yellow oxalis Oxalis stricta
Cuman ragweed Ambrosia psilostachya
curlycup gumweed Grindelia squarrosa
curlytop knotweed Polygonum lapathifolium
cutleaf nightshade Solanum triflorum
desert biscuitroot Lomatium foeniculaceum
desert goosefoot Chenopodium pratericola
Drummond's campion Silene drummondii
Drummond's false pennyroyal Hedeoma drummondii
Dudley's rush Juncus dudleyi
Equisetum ×ferrissii Equisetum ×ferrissii
false melic Schizachne purpurascens
fineleaf hymenopappus Hymenopappus filifolius
fireberry hawthorn Crataegus chrysocarpa
flatspine stickseed Lappula occidentalis
fleshy starwort Stellaria crassifolia
Flodman's thistle Cirsium flodmanii
foothill bladderpod Lesquerella ludoviciana
foxtail barley Hordeum jubatum
fragrant bedstraw Galium triflorum
Fremont's goosefoot Chenopodium fremontii
fringed loosestrife Lysimachia ciliata
fringed willowherb Epilobium ciliatum
great ragweed Ambrosia trifida
green comet milkweed Asclepias viridiflora
groundplum milkvetch Astragalus crassicarpus
hairy evening primrose Oenothera villosa
hairy four o'clock Mirabilis hirsuta
hairy waterclover Marsilea vestita
hairy wildrye Elymus villosus
hairystem gooseberry Ribes hirtellum
hedge false bindweed Calystegia sepium
hemlock waterparsnip Sium suave
hoary tansyaster Machaeranthera canescens
horned pondweed Zannichellia palustris
lacy tansyaster Machaeranthera pinnatifida
lanceleaf sage Salvia reflexa
large Indian breadroot Pediomelum esculentum
Laxmann's milkvetch Astragalus laxmannii
leathery knotweed Polygonum achoreum
lemon scurfpea Psoralidium lanceolatum
lesser spikemoss Selaginella densa
lilac penstemon Penstemon gracilis
limber honeysuckle Lonicera dioica
long-stolon sedge Carex inops
longstyle sweetroot Osmorhiza longistylis
Louisiana broomrape Orobanche ludoviciana
lowland yellow loosestrife Lysimachia hybrida
Macoun's barley ×Elyhordeum macounii
manybranched pepperweed Lepidium ramosissimum
mapleleaf goosefoot Chenopodium simplex
marsh arrowgrass Triglochin palustris
marsh skullcap Scutellaria galericulata
Maryland sanicle Sanicula marilandica
Maximilian sunflower Helianthus maximiliani
meadow deathcamas Zigadenus venenosus
meadow willow Salix petiolaris
meadow zizia Zizia aptera
Mojave seablite Suaeda moquinii
mountain deathcamas Zigadenus elegans
mountain tarweed Madia glomerata
narrowleaf four o'clock Mirabilis linearis
narrowleaf purple coneflower Echinacea angustifolia
narrowleaf stoneseed Lithospermum incisum
neckweed Veronica peregrina
needleleaf sedge Carex duriuscula
nodding chickweed Cerastium nutans
nodding stickseed Hackelia deflexa
northern bog violet Viola nephrophylla
Northern Idaho biscuitroot Lomatium orientale
northern sweetgrass Hierochloe hirta
northern water plantain Alisma triviale
Norwegian cinquefoil Potentilla norvegica
pale spikerush Eleocharis macrostachya
palespike lobelia Lobelia spicata
Paradox cinquefoil Potentilla paradoxa
Pennsylvania cinquefoil Potentilla pensylvanica
Pennsylvania pellitory Parietaria pensylvanica
pitseed goosefoot Chenopodium berlandieri
plains bluegrass Poa arida
pleated gentian Gentiana affinis
Porter brome Bromus porteri
poverty oatgrass Danthonia spicata
povertyweed Iva axillaris
prairie false dandelion Nothocalais cuspidata
prairie rose Rosa arkansana
prairie sunflower Helianthus petiolaris
puffsheath dropseed Sporobolus neglectus
purple meadow-rue Thalictrum dasycarpum
Pursh seepweed Suaeda calceoliformis
pygmyflower rockjasmine Androsace septentrionalis
rayless alkali aster Symphyotrichum ciliatum
redwhisker clammyweed Polanisia dodecandra
redwool plantain Plantago eriopoda
ribseed sandmat Chamaesyce glyptosperma
Richardson's alumroot Heuchera richardsonii
Richardson's pondweed Potamogeton richardsonii
Rocky Mountain fescue Festuca saximontana
Rocky Mountain sedge Carex saximontana
rosy pussytoes Antennaria rosea
rough false pennyroyal Hedeoma hispida
roughfruit fairybells Prosartes trachycarpa
rush skeletonplant Lygodesmia juncea
Sartwell's sedge Carex sartwellii
scarlet beeblossom Oenothera suffrutescens
Scouler's popcornflower Plagiobothrys scouleri
seaside arrowgrass Triglochin maritima
shaggy fleabane Erigeron pumilus
shortbeak sedge Carex brevior
shortray fleabane Erigeron lonchophyllus
shortstalk chickweed Cerastium brachypodum
shy wallflower Erysimum inconspicuum
silverleaf Indian breadroot Pediomelum argophyllum
silverscale saltbush Atriplex argentea
sixweeks fescue Vulpia octoflora
skullcap speedwell Veronica scutellata
slender wedgescale Sphenopholis intermedia
small pondweed Potamogeton pusillus
small-leaf pussytoes Antennaria parvifolia
smooth Solomon's seal Polygonatum biflorum
spiny phlox Phlox hoodii
spinystar Escobaria vivipara
spiral ditchgrass Ruppia cirrhosa
spotted fritillary Fritillaria atropurpurea
spotted water hemlock Cicuta maculata
Sprengel's sedge Carex sprengelii
Standley's goosefoot Chenopodium standleyanum
starry false lily of the valley Maianthemum stellatum
stemless four-nerve daisy Tetraneuris acaulis
stemless Townsend daisy Townsendia exscapa
stiff sunflower Helianthus pauciflorus
strict blue-eyed grass Sisyrinchium montanum
tall annual willowherb Epilobium brachycarpum
tall thimbleweed Anemone virginiana
tarragon Artemisia dracunculus
thinleaf cottonsedge Eriophorum viridicarinatum
tiny trumpet Collomia linearis
tower rockcress Arabis glabra
tumblegrass Schedonnardus paniculatus
veiny dock Rumex venosus
veiny meadow-rue Thalictrum venulosum
velvety goldenrod Solidago mollis
Virginia strawberry Fragaria virginiana
water whorlgrass Catabrosa aquatica
wavyleaf thistle Cirsium undulatum
western marsh cudweed Gnaphalium palustre
western rockjasmine Androsace occidentalis
western tansymustard Descurainia pinnata
white heath aster Symphyotrichum ericoides
whitest evening primrose Oenothera albicaulis
whorled milkweed Asclepias verticillata
wild cucumber Echinocystis lobata
witchgrass Panicum capillare
wood anemone Anemone quinquefolia
wood bluegrass Poa nemoralis
wood lily Lilium philadelphicum
woodland draba Draba nemorosa
woolly cinquefoil Potentilla hippiana
woolly sedge Carex pellita
yellow avens Geum aleppicum

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.

annual ragweedAmbrosia artemisiifolia
common reedPhragmites australis
Kentucky bluegrassPoa pratensis

Compared with North Dakota

The typical county is the median of the 53 North Dakota 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, Williams County and North Dakota
Measure	Williams County	Typical county	Statewide
Native species	390	287	890
Garden-ready natives	201	143	386
Tree	22	—	50
Shrub	28	—	62
Wildflower (forb)	228	—	513
Grass or grass-like	97	—	203
Vine	9	—	31
Fern	6	—	31

Neighboring counties

Counties that share a ZIP code with Williams County.

Burke County, ND 195 garden-ready
Divide County, ND 173 garden-ready
Mountrail County, ND 193 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: Williams County (county FIPS 38105), North Dakota. 390 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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