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Native plants · California

Native plants of Glenn County

324 plant species are recorded as native to California in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Glenn County by USDA PLANTS. 230 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

Glenn County, California

Native species
324 Typical California county: 333 (median of 58 counties)
Garden-ready natives
230 Typical California county: 239
Share by type (all 324 native species)
Percent of the 324 native species in each growth type
Tree 12% (39)
Shrub 9% (30)
Wildflower (forb) 53% (172)
Grass or grass-like 22% (71)
Vine <1% (3)
Fern 3% (9)

Wildflowers make up the largest share of the native list (53%), followed by grasses and grass-like plants (22%).

Recorded native ranges can include long-established populations that spread from gardens; check your state’s native plant society list for local guidance. How native status is decided.

ZIP codes mainly in this county fall in USDA hardiness zones 9a to 9b (2023 map).

The native plant list

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

Garden-ready natives 230

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

Garden-ready native plants of Glenn County, California
PlantType HeightLight Water useHardy to
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 speedwell Veronica americana Wildflower (forb) 10 in Shade-tolerant 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
annual hairgrass Deschampsia danthonioides Grass or grass-like 1.5 ft Sun–part shade Medium Zone 12b
antelope bitterbrush Purshia tridentata Shrub 6 ft Sun–part shade Low Zone 3b
arctic pearlwort Sagina saginoides Wildflower (forb) 4 in Sun–part shade High Zone 4a
arrowleaf ragwort Senecio triangularis Wildflower (forb) 4 ft Sun–part shade High Zone 4a
beaked hazelnut Corylus cornuta Tree 15 ft Shade-tolerant Medium Zone 2b
bearded fescue Festuca subulata Grass or grass-like 1.2 ft Shade-tolerant High Zone 3b
beardless wildrye Leymus triticoides Grass or grass-like 3 ft Sun High Zone 3a
big deervetch Lotus crassifolius Wildflower (forb) 3.5 ft Sun Medium Zone 7a
big saltbush Atriplex lentiformis Shrub 10 ft Sun Low Zone 8a
bigflower agoseris Agoseris grandiflora Wildflower (forb) 1.8 ft Sun Medium Zone 6a
bigleaf maple Acer macrophyllum Tree 60 ft Sun–part shade Medium Zone 6a
bigseed biscuitroot Lomatium macrocarpum Wildflower (forb) 6 in Sun Low Zone 4b
bitter cherry Prunus emarginata Tree 80 ft Sun Medium Zone 5a
blue oak Quercus douglasii Tree 60 ft Sun Low Zone 8a
blue wildrye Elymus glaucus Grass or grass-like 3.3 ft Shade-tolerant Low Zone 3b
bluejoint Calamagrostis canadensis Grass or grass-like 4.9 ft Sun Medium Zone 4a
blunt spikerush Eleocharis obtusa Grass or grass-like 1.6 ft Sun Medium Zone 11a
boxelder Acer negundo Tree 60 ft Shade-tolerant Medium Zone 2b
brickellbush aster Eucephalus brickellioides Wildflower (forb) 2 ft Sun Low Zone 8a
broadleaf cattail Typha latifolia Wildflower (forb) 5 ft Sun–part shade High Zone 3b
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
buckbrush Ceanothus cuneatus Shrub 11 ft Sun Medium Zone 6a
bunchleaf penstemon Penstemon heterophyllus Wildflower (forb) 2 ft Sun Medium Zone 9a
California amaranth Amaranthus californicus Wildflower (forb) 1 ft Sun Medium Zone 7a
California black oak Quercus kelloggii Tree 85 ft Sun Medium Zone 7a
California blackberry Rubus ursinus Shrub 2 ft Sun Medium Zone 8a
California brome Bromus carinatus Grass or grass-like 4 ft Sun Low Zone 9a
California buckeye Aesculus californica Tree 25 ft Sun–part shade Medium Zone 7b
California buckthorn Frangula californica Tree 5 ft Sun Medium Zone 8a
California damsonium Damasonium californicum Wildflower (forb) 1.5 ft Sun High Zone 5a
California false hellebore Veratrum californicum Wildflower (forb) 6 ft Shade-tolerant High Zone 3b
California fescue Festuca californica Grass or grass-like 4 ft Sun Medium Zone 8a
California flannelbush Fremontodendron californicum Tree 10 ft Sun Low Zone 9b
California foothill pine Pinus sabiniana Tree 80 ft Sun Low Zone 8b
California laurel Umbellularia californica Tree 80 ft Shade-tolerant High Zone 6a
California melicgrass Melica californica Grass or grass-like 4 ft Sun–part shade Low Zone 8a
California oatgrass Danthonia californica Grass or grass-like 2 ft Sun Medium Zone 9a
California poppy Eschscholzia californica Wildflower (forb) 1.2 ft Sun–part shade Low Zone 8a
California red fir Abies magnifica Tree 150 ft Shade-tolerant Medium Zone 5a
California sycamore Platanus racemosa Tree 75 ft Sun Medium Zone 8a
California wildrose Rosa californica Shrub 10 ft Sun–part shade High Zone 8a
California yerba santa Eriodictyon californicum Shrub 8 ft Sun Low Zone 7a
Canada goldenrod Solidago canadensis Wildflower (forb) 3.5 ft Sun Medium Zone 3a
Canadian horseweed Conyza canadensis Wildflower (forb) 5 ft Sun Medium Zone 12b
canyon live oak Quercus chrysolepis Tree 90 ft Shade-tolerant Medium Zone 8b
Cascara buckthorn Frangula purshiana Tree 35 ft Shade-tolerant Medium Zone 7a
chamise Adenostoma fasciculatum Shrub 10 ft Sun Medium Zone 10b
Chamisso arnica Arnica chamissonis Wildflower (forb) 2.5 ft Sun–part shade High Zone 4a
chamisso sedge Carex pachystachya Grass or grass-like 3.5 ft Shade-tolerant 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
Columbia brome Bromus vulgaris Grass or grass-like 1 ft Shade-tolerant Low Zone 5a
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 buttonbush Cephalanthus occidentalis Tree 15 ft Shade-tolerant High Zone 4a
common cowparsnip Heracleum maximum Wildflower (forb) 8 ft Sun High Zone 3b
common duckweed Lemna minor Wildflower (forb) — Sun High Zone 3b
common rush Juncus effusus Grass or grass-like 6.6 ft Sun Medium Zone 3b
common selfheal Prunella vulgaris Wildflower (forb) 1.5 ft Sun–part shade Medium Zone 3b
common sunflower Helianthus annuus Wildflower (forb) 9 ft Sun Medium Zone 12b
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
cows clover Trifolium wormskioldii Wildflower (forb) 3.5 ft Sun–part shade Medium Zone 4b
coyotebrush Baccharis pilularis Shrub 10 ft Sun Low Zone 9b
creeping barberry Mahonia repens Shrub 2 ft Shade-tolerant Medium Zone 5a
curl-leaf mountain mahogany Cercocarpus ledifolius Tree 20 ft Sun–part shade Low Zone 2b
Davis' knotweed Polygonum davisiae Wildflower (forb) 1.3 ft Sun–part shade Low Zone 5a
deerbrush Ceanothus integerrimus Shrub 13 ft Sun Low Zone 6a
devil's beggartick Bidens frondosa Wildflower (forb) 4 ft Sun–part shade Medium Zone 12a
dotted smartweed Polygonum punctatum Wildflower (forb) 3.2 ft Sun Medium Zone 10b
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
drooping woodreed Cinna latifolia Grass or grass-like 4.5 ft Sun–part shade High Zone 3b
dwarf purple monkeyflower Mimulus nanus Wildflower (forb) 6 in Sun Low Zone 10b
dwarf rose Rosa gymnocarpa Shrub 3 ft Shade-tolerant Medium Zone 5b
dwarf spikerush Eleocharis parvula Grass or grass-like 1.2 ft Sun Medium Zone 3b
fall panicgrass Panicum dichotomiflorum Grass or grass-like 3.3 ft Sun High Zone 3a
false daisy Eclipta prostrata Wildflower (forb) 3.2 ft Sun–part shade Medium Zone 10b
field horsetail Equisetum arvense Fern 11 in Sun–part shade High Zone 3a
fireweed Chamerion angustifolium Wildflower (forb) 5.5 ft Sun–part shade High Zone 3b
foothill deathcamas Zigadenus paniculatus Wildflower (forb) 1.6 ft Sun Medium Zone 4a
fowl mannagrass Glyceria striata Grass or grass-like 5.7 ft Shade-tolerant Medium Zone 3b
fragrant flatsedge Cyperus odoratus Grass or grass-like 2 ft Sun Medium Zone 11b
Fremont cottonwood Populus fremontii Tree 90 ft Sun High Zone 6a
Gardner's yampah Perideridia gairdneri Wildflower (forb) 4 ft Shade-tolerant High Zone 5b
glaucus willowherb Epilobium glaberrimum Wildflower (forb) 2 ft Shade-tolerant Medium Zone 6b
golden sedge Carex aurea Grass or grass-like 1.2 ft Sun–part shade High Zone 4a
Goodding's willow Salix gooddingii Tree 40 ft Sun High Zone 5a
granite prickly phlox Linanthus pungens Wildflower (forb) 2 ft Shade-tolerant Low Zone 4a
gray alder Alnus incana Tree 25 ft Sun–part shade High Zone 4a
greenleaf fescue Festuca viridula Grass or grass-like 2.5 ft Sun–part shade Medium Zone 4a
greenleaf manzanita Arctostaphylos patula Shrub 6 ft Sun–part shade Medium Zone 4b
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
hollyleaved barberry Mahonia aquifolium Shrub 8 ft Shade-tolerant Low Zone 3a
hooded lady's tresses Spiranthes romanzoffiana Wildflower (forb) 2.5 ft Sun–part shade High Zone 3b
Hooker's evening primrose Oenothera elata Wildflower (forb) 5 ft Sun High Zone 5a
huckleberry oak Quercus vacciniifolia Shrub 1.3 ft Shade-tolerant Low Zone 4b
Idaho fescue Festuca idahoensis Grass or grass-like 2 ft Sun–part shade Medium Zone 3b
incense cedar Calocedrus decurrens Tree 100 ft Sun–part shade Low Zone 4b
Indian plum Oemleria cerasiformis Tree 5 ft Sun–part shade — Zone 10a
Indianhemp Apocynum cannabinum Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
Jeffrey pine Pinus jeffreyi Tree 180 ft Sun Medium Zone 3b
Klamath plum Prunus subcordata Tree 25 ft Sun Low Zone 4b
knotgrass Paspalum distichum Grass or grass-like 11 in Sun High Zone 6a
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
Lemmon's needlegrass Achnatherum lemmonii Grass or grass-like 3 ft Sun Low Zone 4b
Lewis flax Linum lewisii Wildflower (forb) 2.5 ft Sun Medium Zone 3b
little sagebrush Artemisia arbuscula Shrub 2 ft Sun Low Zone 3a
little western bittercress Cardamine oligosperma Wildflower (forb) 1.7 ft Shade-tolerant Medium Zone 5a
longleaf pondweed Potamogeton nodosus Wildflower (forb) — Sun High Zone 3b
longstalk clover Trifolium longipes Wildflower (forb) 6 in Sun–part shade Medium Zone 8a
low pussytoes Antennaria dimorpha Wildflower (forb) 4 in Sun–part shade Low Zone 3b
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
meadow barley Hordeum brachyantherum Grass or grass-like 2 ft Sun Medium Zone 3a
Mexican rush Juncus mexicanus Grass or grass-like 10 in Sun Medium Zone 5b
miner's lettuce Claytonia perfoliata Wildflower (forb) 1 ft Shade-tolerant Medium Zone 12b
mountain brome Bromus marginatus Grass or grass-like 4 ft Sun High Zone 4b
mountain pride Penstemon newberryi Wildflower (forb) 1 ft Sun–part shade Low Zone 5a
mountain sedge Carex scopulorum Grass or grass-like 1.3 ft Sun–part shade High Zone 3b
mule-fat Baccharis salicifolia Shrub 10 ft Sun Medium Zone 7a
narrowleaf willow Salix exigua Tree 10 ft Sun–part shade High Zone 3b
nettleleaf giant hyssop Agastache urticifolia Wildflower (forb) 5 ft Sun–part shade Medium Zone 4a
nodding microseris Microseris nutans Wildflower (forb) 2 ft Shade-tolerant Medium Zone 4b
nodding needlegrass Nassella cernua Grass or grass-like 2.6 ft Sun Low Zone 9a
Northwest Territory sedge Carex utriculata Grass or grass-like 3.5 ft Sun High Zone 3a
Nuttall's povertyweed Monolepis nuttalliana Wildflower (forb) 10 in Sun Medium Zone 12a
oceanspray Holodiscus discolor Shrub 12 ft Sun High Zone 8a
onespike danthonia Danthonia unispicata Grass or grass-like 10 in Sun Low Zone 4b
oniongrass Melica bulbosa Grass or grass-like 1.8 ft Sun–part shade Low Zone 3a
Oregon ash Fraxinus latifolia Tree 70 ft Sun–part shade Medium Zone 6b
Oregon checkerbloom Sidalcea oregana Wildflower (forb) 4.5 ft Shade-tolerant High Zone 3b
Oregon white oak Quercus garryana Tree 80 ft Sun Low Zone 4a
Pacific aster Symphyotrichum chilense Wildflower (forb) 3.5 ft Sun–part shade Medium Zone 4b
Pacific bleeding heart Dicentra formosa Wildflower (forb) 1.5 ft Shade-tolerant Low Zone 5a
Pacific dogwood Cornus nuttallii Tree 50 ft Shade-tolerant Medium Zone 4b
Pacific madrone Arbutus menziesii Tree 80 ft Sun–part shade Low Zone 8b
Pacific ninebark Physocarpus capitatus Shrub 8 ft Sun Low Zone 4a
pale yellow lupine Lupinus luteolus Wildflower (forb) 2.9 ft Sun–part shade Medium Zone 12b
panicled bulrush Scirpus microcarpus Grass or grass-like 5.5 ft Sun Medium Zone 3b
Philadelphia fleabane Erigeron philadelphicus Wildflower (forb) 2.8 ft Sun–part shade Medium Zone 4b
pinemat manzanita Arctostaphylos nevadensis Shrub 2 ft Shade-tolerant Low Zone 6a
pipsissewa Chimaphila umbellata Shrub 1.5 ft Shade-tolerant Low Zone 3b
plantainleaf buttercup Ranunculus alismifolius Wildflower (forb) 2 ft Sun–part shade High Zone 4a
ponderosa pine Pinus ponderosa Tree 223 ft Sun Medium Zone 3b
primrose monkeyflower Mimulus primuloides Wildflower (forb) 1.5 ft Shade-tolerant 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
rice cutgrass Leersia oryzoides Grass or grass-like 4.9 ft Sun High Zone 4a
river bulrush Bolboschoenus fluviatilis Grass or grass-like 6.6 ft Sun Medium Zone 3b
rockloving erigeron Erigeron petrophilus Wildflower (forb) 1 ft Shade-tolerant Low Zone 8a
Rocky Mountain iris Iris missouriensis Wildflower (forb) 1 ft Sun–part shade High Zone 4b
Ross' sedge Carex rossii Grass or grass-like 1 ft Sun–part shade Medium Zone 4a
rubber rabbitbrush Ericameria nauseosa Shrub 4 ft Sun Medium Zone 3b
rush pussytoes Antennaria luzuloides Wildflower (forb) 2 ft Sun Medium Zone 4a
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
saltgrass Distichlis spicata Grass or grass-like 1.1 ft Sun Medium 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
scabland penstemon Penstemon deustus Wildflower (forb) 2 ft Sun Low Zone 4a
scarlet gilia Ipomopsis aggregata Wildflower (forb) 3 ft Sun Low Zone 5b
scarlet monkeyflower Mimulus cardinalis Wildflower (forb) 2.5 ft Shade-tolerant High Zone 4b
seep monkeyflower Mimulus guttatus Wildflower (forb) 2.5 ft Shade-tolerant High Zone 3b
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
Sierra currant Ribes nevadense Shrub 6 ft Sun–part shade High Zone 4b
Sitka willow Salix sitchensis Tree 23 ft Sun High Zone 5b
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 clarkia Clarkia gracilis Wildflower (forb) 2.5 ft Sun–part shade Medium Zone 12b
slender hairgrass Deschampsia elongata Grass or grass-like 3 ft Sun Low Zone 3b
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
small camas Camassia quamash Wildflower (forb) 2.3 ft Shade-tolerant High Zone 4b
small white violet Viola macloskeyi Wildflower (forb) 6 in Shade-tolerant High Zone 4b
smooth horsetail Equisetum laevigatum Fern 5 ft Sun Low Zone 3b
southern waternymph Najas guadalupensis Wildflower (forb) 1 ft Sun High Zone 3b
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
spreading alkaliweed Cressa truxillensis Wildflower (forb) 10 in Sun Medium Zone 6a
spreading phlox Phlox diffusa Wildflower (forb) 6 in Shade-tolerant Low 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
strawcolored flatsedge Cyperus strigosus Grass or grass-like 3.2 ft Sun Medium Zone 4a
sugar pine Pinus lambertiana Tree 229 ft Sun–part shade Medium Zone 4b
sulphur-flower buckwheat Eriogonum umbellatum Shrub 1 ft Sun Low Zone 8a
swamp smartweed Polygonum hydropiperoides Wildflower (forb) — Sun Medium Zone 10b
swordleaf rush Juncus ensifolius Grass or grass-like 2 ft Sun–part shade High Zone 3b
tall trisetum Trisetum canescens Grass or grass-like 3.5 ft Sun–part shade Medium Zone 4a
tanoak Notholithocarpus densiflorus Tree 125 ft Shade-tolerant Medium Zone 8a
tarweed fiddleneck Amsinckia lycopsoides Wildflower (forb) 3 ft Sun Low Zone 4b
teal lovegrass Eragrostis hypnoides Grass or grass-like 4 in Sun High Zone 3b
thimbleberry Rubus parviflorus Shrub 4 ft Sun–part shade High Zone 4b
toad rush Juncus bufonius Grass or grass-like 1 ft Sun Medium Zone 12a
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
twinberry honeysuckle Lonicera involucrata Shrub 10 ft Shade-tolerant High Zone 3a
umbrella starwort Stellaria umbellata Wildflower (forb) 1 ft Shade-tolerant High Zone 4b
valley oak Quercus lobata Tree 100 ft Sun Medium Zone 8a
valley redstem Ammannia coccinea Wildflower (forb) 1.6 ft Sun Medium Zone 3b
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
wavyleaf Indian paintbrush Castilleja applegatei Wildflower (forb) 1.5 ft Sun Low Zone 4b
western columbine Aquilegia formosa Wildflower (forb) 3 ft Shade-tolerant Medium Zone 5a
western fescue Festuca occidentalis Grass or grass-like 3 ft Shade-tolerant Low Zone 3a
western goldentop Euthamia occidentalis Wildflower (forb) 6 ft Sun Medium Zone 4b
western needlegrass Achnatherum occidentale Grass or grass-like 2 ft Sun–part shade Low Zone 4b
western sweetroot Osmorhiza occidentalis Wildflower (forb) 4 ft Shade-tolerant Medium Zone 3b
western swordfern Polystichum munitum Fern 3.5 ft Shade-tolerant High Zone 4a
western waterleaf Hydrophyllum occidentale Wildflower (forb) 1.5 ft Shade-tolerant Medium Zone 5b
white alder Alnus rhombifolia Tree 65 ft Shade-tolerant High Zone 5a
white hawkweed Hieracium albiflorum Wildflower (forb) 3 ft Sun–part shade Low Zone 4a
whitebark raspberry Rubus leucodermis Vine 1 ft Sun Medium Zone 8a
whiteleaf manzanita Arctostaphylos manzanita Shrub 8 ft Sun–part shade Low Zone 5a
whitethorn ceanothus Ceanothus cordulatus Shrub 8 ft Sun Low Zone 5a
woodrush sedge Carex luzulina Grass or grass-like 2 ft Sun High Zone 4a
woolly mule-ears Wyethia mollis Wildflower (forb) 2.5 ft Shade-tolerant Low Zone 6a
woollypod milkvetch Astragalus purshii Wildflower (forb) 7 in Sun Low Zone 4a

Other native species recorded here 94

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 black nightshade Solanum americanum
  • American pillwort Pilularia americana
  • American rockbrake Cryptogramma acrostichoides
  • American wild carrot Daucus pusillus
  • American yellowrocket Barbarea orthoceras
  • arroyo willow Salix lasiolepis
  • bearded flatsedge Cyperus squarrosus
  • bigleaf lupine Lupinus polyphyllus
  • blue mudplantain Heteranthera limosa
  • bluntleaf yellowcress Rorippa curvipes
  • boreal starwort Stellaria borealis
  • Brazilian watermeal Wolffia brasiliensis
  • brittle bladderfern Cystopteris fragilis
  • buffalobur nightshade Solanum rostratum
  • bushy knotweed Polygonum ramosissimum
  • Carolina geranium Geranium carolinianum
  • claspleaf twistedstalk Streptopus amplexifolius
  • clustered broomrape Orobanche fasciculata
  • cottonbatting plant Pseudognaphalium stramineum
  • Cuman ragweed Ambrosia psilostachya
  • curlytop knotweed Polygonum lapathifolium
  • cutleaf groundcherry Physalis angulata
  • ditch rabbitsfoot grass Polypogon interruptus
  • Douglas' knotweed Polygonum douglasii
  • elkweed Frasera speciosa
  • Engelmann's spikerush Eleocharis engelmannii
  • false mermaidweed Floerkea proserpinacoides
  • feathery false lily of the valley Maianthemum racemosum
  • foxtail barley Hordeum jubatum
  • fragrant bedstraw Galium triflorum
  • fringed willowherb Epilobium ciliatum
  • giant red Indian paintbrush Castilleja miniata
  • grand redstem Ammannia robusta
  • green carpetweed Mollugo verticillata
  • hairy waterclover Marsilea vestita
  • hoary tansyaster Machaeranthera canescens
  • hooded arrowhead Sagittaria calycina
  • hooded coralroot Corallorhiza striata
  • hookedspur violet Viola adunca
  • horned pondweed Zannichellia palustris
  • lesser duckweed Lemna aequinoctialis
  • manyflowered monkeyflower Mimulus floribundus
  • marsh bristlegrass Setaria parviflora
  • Menzies' fiddleneck Amsinckia menziesii
  • Mexican Mosquito Fern Azolla microphylla
  • milkflower willowherb Epilobium lactiflorum
  • Mojave seablite Suaeda moquinii
  • muskflower Mimulus moschatus
  • neckweed Veronica peregrina
  • needleleaf navarretia Navarretia intertexta
  • northern hollyfern Polystichum lonchitis
  • pale spikerush Eleocharis macrostachya
  • pinesap Monotropa hypopitys
  • pinyon goosefoot Chenopodium atrovirens
  • prairie cupgrass Eriochloa contracta
  • prairie plantain Plantago elongata
  • pullup muhly Muhlenbergia filiformis
  • purple spikerush Eleocharis atropurpurea
  • Pursh seepweed Suaeda calceoliformis
  • ram's horn Proboscidea louisianica
  • red baneberry Actaea rubra
  • rosemallow Hibiscus lasiocarpos
  • rosy pussytoes Antennaria rosea
  • salt sandspurry Spergularia salina
  • sand spikerush Eleocharis montevidensis
  • scentbottle Platanthera dilatata
  • silverleaf nightshade Solanum elaeagnifolium
  • silverscale saltbush Atriplex argentea
  • slender phlox Microsteris gracilis
  • slender-spire orchid Piperia unalascensis
  • southern cattail Typha domingensis
  • spreading dogbane Apocynum androsaemifolium
  • starry false lily of the valley Maianthemum stellatum
  • stream orchid Epipactis gigantea
  • summer coralroot Corallorhiza maculata
  • swamp verbena Verbena hastata
  • sweetcicely Osmorhiza berteroi
  • swollen duckweed Lemna gibba
  • tall annual willowherb Epilobium brachycarpum
  • Texas bergia Bergia texana
  • threadleaf crowfoot Ranunculus trichophyllus
  • tiny trumpet Collomia linearis
  • tower rockcress Arabis glabra
  • trailing pearlwort Sagina decumbens
  • turion duckweed Lemna turionifera
  • upright burhead Echinodorus berteroi
  • water minerslettuce Montia chamissoi
  • water pygmyweed Crassula aquatica
  • western marsh cudweed Gnaphalium palustre
  • western rattlesnake plantain Goodyera oblongifolia
  • willow dock Rumex salicifolius
  • witchgrass Panicum capillare
  • woodland pinedrops Pterospora andromedea
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.

Compared with California

The typical county is the median of the 58 California 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, Glenn County and California
MeasureGlenn CountyTypical countyStatewide
Native species 324 333 1,108
Garden-ready natives 230 239 720
Tree 39 — 111
Shrub 30 — 140
Wildflower (forb) 172 — 559
Grass or grass-like 71 — 253
Vine 3 — 16
Fern 9 — 29

Neighboring counties

Counties that share a ZIP code with Glenn County.

Look up another ZIP

Matches your ZIP to the county it mostly lies in, then lists the plants recorded as native to your state (Kew’s World Checklist and USDA PLANTS) and recorded in that county by USDA PLANTS.

Source & data date

Source
USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
Citation
USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
Data date
Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
Zones
USDA Plant Hardiness Zone Map (2023) ZIP table: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 3, 2026. Plant zones on this site are our estimate, not the official map.
Scope
Glenn County (county FIPS 06021), California. 324 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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