Native plants · California

Native plants of Orange County

216 plant species are recorded as native to California in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in Orange County by USDA PLANTS. 133 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

Orange County, California

Native species
216 Typical California county: 333 (median of 58 counties)
Garden-ready natives
133 Typical California county: 239
Share by type (all 216 native species)
Percent of the 216 native species in each growth type
Tree 11% (23)
Shrub 11% (24)
Wildflower (forb) 54% (116)
Grass or grass-like 19% (42)
Vine 3% (6)
Fern 2% (5)

Wildflowers make up the largest share of the native list (54%), followed by grasses and grass-like plants (19%).

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 10a to 10b (2023 map).

The native plant list

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

Garden-ready natives 133

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

Garden-ready native plants of Orange County, California
PlantType HeightLight Water useHardy to
alkali buttercup Ranunculus cymbalaria Wildflower (forb) 1 ft Shade-tolerant High 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
bastardsage Eriogonum wrightii Shrub 2 ft Sun–part shade Low Zone 6a
beaked spikerush Eleocharis rostellata Grass or grass-like 3 ft Sun High Zone 4b
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 sagebrush Artemisia tridentata Tree 4 ft Sun Medium Zone 3a
big saltbush Atriplex lentiformis Shrub 10 ft Sun Low Zone 8a
bigberry manzanita Arctostaphylos glauca Tree 18 ft Sun–part shade Low Zone 8b
bigcone Douglas-fir Pseudotsuga macrocarpa Tree 75 ft Sun Low Zone 6a
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
bigpod ceanothus Ceanothus megacarpus Shrub 13 ft Sun Low Zone 9b
blue wildrye Elymus glaucus Grass or grass-like 3.3 ft Shade-tolerant Low Zone 3b
boraxweed Nitrophila occidentalis Wildflower (forb) 1 ft Sun Medium Zone 6a
brittlebush Encelia farinosa Shrub 5 ft Sun Low Zone 10a
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
broom snakeweed Gutierrezia sarothrae Shrub 1.5 ft Sun Medium 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 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 buckthorn Frangula californica Tree 5 ft Sun Medium Zone 8a
California bulrush Schoenoplectus californicus Grass or grass-like 6.6 ft Sun High Zone 9a
California laurel Umbellularia californica Tree 80 ft Shade-tolerant High Zone 6a
California live oak Quercus agrifolia Tree 70 ft Sun Medium Zone 8a
California poppy Eschscholzia californica Wildflower (forb) 1.2 ft Sun–part shade Low Zone 8a
California sycamore Platanus racemosa Tree 75 ft Sun Medium Zone 8a
California wildrose Rosa californica Shrub 10 ft Sun–part shade High Zone 8a
Canadian horseweed Conyza canadensis Wildflower (forb) 5 ft Sun Medium Zone 12b
cane bluestem Bothriochloa barbinodis Grass or grass-like 4 ft Sun Medium Zone 7b
canyon live oak Quercus chrysolepis Tree 90 ft Shade-tolerant Medium Zone 8b
chamise Adenostoma fasciculatum Shrub 10 ft Sun Medium Zone 10b
chaparral yucca Hesperoyucca whipplei Shrub 4 ft Sun Low Zone 8a
clustered field sedge Carex praegracilis Grass or grass-like 2 ft Sun–part shade Medium Zone 3b
coastal sage scrub oak Quercus dumosa Tree 9 ft Sun Low Zone 9b
Colorado four o'clock Mirabilis multiflora Wildflower (forb) 2 ft Sun Low Zone 5b
common duckweed Lemna minor Wildflower (forb) — Sun High 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
Coulter pine Pinus coulteri Tree 80 ft Sun Medium Zone 8b
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
curvepod yellowcress Rorippa curvisiliqua Wildflower (forb) 1 ft Shade-tolerant High Zone 12b
deerbrush Ceanothus integerrimus Shrub 13 ft Sun Low Zone 6a
desert globemallow Sphaeralcea ambigua Wildflower (forb) 5 ft Sun Low Zone 6b
dwarf spikerush Eleocharis parvula Grass or grass-like 1.2 ft Sun Medium Zone 3b
Eastern Mojave buckwheat Eriogonum fasciculatum Shrub 3 ft Sun Low Zone 8a
false daisy Eclipta prostrata Wildflower (forb) 3.2 ft Sun–part shade Medium Zone 10b
false indigo bush Amorpha fruticosa Shrub 15 ft Sun Low Zone 3b
field horsetail Equisetum arvense Fern 11 in Sun–part shade High Zone 3a
foothill needlegrass Nassella lepida Grass or grass-like 3 ft Sun Low Zone 9a
fourwing saltbush Atriplex canescens Shrub 4 ft Sun Medium Zone 3a
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
giant wildrye Leymus condensatus Grass or grass-like 8.5 ft Sun High Zone 3b
Goodding's willow Salix gooddingii Tree 40 ft Sun High Zone 5a
hardstem bulrush Schoenoplectus acutus Grass or grass-like 9.8 ft Sun High Zone 3b
hollyleaf cherry Prunus ilicifolia Tree 40 ft Sun Medium Zone 10b
Hooker's evening primrose Oenothera elata Wildflower (forb) 5 ft Sun High Zone 5a
incense cedar Calocedrus decurrens Tree 100 ft Sun–part shade Low Zone 4b
Indianhemp Apocynum cannabinum Wildflower (forb) 3.3 ft Sun–part shade High Zone 3a
knotgrass Paspalum distichum Grass or grass-like 11 in Sun High Zone 6a
lacy phacelia Phacelia tanacetifolia Wildflower (forb) 4 ft Sun Medium Zone 12b
longleaf pondweed Potamogeton nodosus Wildflower (forb) — Sun High Zone 3b
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
Missouri gourd Cucurbita foetidissima Vine 1 ft Sun Low Zone 5a
mountain blue penstemon Penstemon laetus Wildflower (forb) 2.5 ft Sun Medium Zone 8b
mule-fat Baccharis salicifolia Shrub 10 ft Sun Medium Zone 7a
narrowleaf willow Salix exigua Tree 10 ft Sun–part shade High Zone 3b
needle spikerush Eleocharis acicularis Grass or grass-like 8 in Sun Medium Zone 5a
nodding waternymph Najas flexilis Wildflower (forb) 2.5 ft Sun–part shade High Zone 12a
Nuttall's povertyweed Monolepis nuttalliana Wildflower (forb) 10 in Sun Medium Zone 12a
Nuttall's sunflower Helianthus nuttallii Wildflower (forb) 10 ft Sun Medium Zone 3b
oceanspray Holodiscus discolor Shrub 12 ft Sun High Zone 8a
Pacific madrone Arbutus menziesii Tree 80 ft Sun–part shade Low Zone 8b
Philadelphia fleabane Erigeron philadelphicus Wildflower (forb) 2.8 ft Sun–part shade Medium Zone 4b
pinebush Ericameria pinifolia Shrub 8 ft Sun Medium Zone 10a
purple needlegrass Nassella pulchra Grass or grass-like 3 ft Sun–part shade Medium Zone 8b
purple threeawn Aristida purpurea Grass or grass-like 1.4 ft Sun Low Zone 4a
redberry buckthorn Rhamnus crocea Tree 5 ft Sun Low Zone 9b
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
sago pondweed Stuckenia pectinata Wildflower (forb) — Sun High Zone 3b
salt heliotrope Heliotropium curassavicum Wildflower (forb) 1.2 ft Sun Medium Zone 4b
salt spring checkerbloom Sidalcea neomexicana Wildflower (forb) 2.5 ft Shade-tolerant High Zone 5a
saltgrass Distichlis spicata Grass or grass-like 1.1 ft Sun Medium Zone 3b
saltmarsh bird's-beak Cordylanthus maritimus Wildflower (forb) 1.7 ft Sun Medium Zone 8a
Sandberg bluegrass Poa secunda Grass or grass-like 1.4 ft Sun–part shade Low Zone 3b
scarlet monkeyflower Mimulus cardinalis Wildflower (forb) 2.5 ft Shade-tolerant High Zone 4b
scratchgrass Muhlenbergia asperifolia Grass or grass-like 2 ft Shade-tolerant High Zone 5b
seep monkeyflower Mimulus guttatus Wildflower (forb) 2.5 ft Shade-tolerant High Zone 3b
Sierra gooseberry Ribes roezlii Shrub 5 ft Sun–part shade Low Zone 4b
silverweed cinquefoil Argentina anserina Wildflower (forb) 6 in Shade-tolerant High Zone 5a
skunkbush sumac Rhus trilobata Shrub 4 ft Sun–part shade Low Zone 2a
smallflower melicgrass Melica imperfecta Grass or grass-like 3.2 ft Sun Low Zone 10a
smooth beggartick Bidens laevis Wildflower (forb) 3.3 ft Sun–part shade High Zone 12b
smooth horsetail Equisetum laevigatum Fern 5 ft Sun Low Zone 3b
softstem bulrush Schoenoplectus tabernaemontani Grass or grass-like 9 ft Sun High Zone 3b
southern waternymph Najas guadalupensis Wildflower (forb) 1 ft Sun High Zone 3b
spreading alkaliweed Cressa truxillensis Wildflower (forb) 10 in Sun Medium Zone 6a
star duckweed Lemna trisulca Wildflower (forb) 4 in Sun High Zone 3b
sticky cinquefoil Potentilla glandulosa Wildflower (forb) 1.5 ft Sun–part shade Low Zone 4a
sturdy bulrush Bolboschoenus robustus Grass or grass-like 4.9 ft Sun High Zone 8a
sugar sumac Rhus ovata Tree 12 ft Sun Low Zone 8a
swamp smartweed Polygonum hydropiperoides Wildflower (forb) — Sun Medium Zone 10b
sweetscent Pluchea odorata Wildflower (forb) 4.9 ft Sun Medium Zone 6a
threepetal bedstraw Galium trifidum Vine 10 in Sun–part shade High Zone 3b
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
turtleweed Batis maritima Shrub 1 in Sun Medium Zone 9a
valley redstem Ammannia coccinea Wildflower (forb) 1.6 ft Sun Medium Zone 3b
velvet ash Fraxinus velutina Tree 40 ft Sun Low Zone 6a
Virginia glasswort Salicornia depressa Wildflower (forb) 1 ft Sun Medium Zone 8b
wartleaf ceanothus Ceanothus papillosus Shrub 16 ft Sun–part shade Low Zone 9b
water knotweed Polygonum amphibium Wildflower (forb) 1 in Sun High Zone 5a
western goldentop Euthamia occidentalis Wildflower (forb) 6 ft Sun Medium Zone 4b
western pearly everlasting Anaphalis margaritacea Wildflower (forb) 3 ft Sun–part shade Medium Zone 3a
western water hemlock Cicuta douglasii Wildflower (forb) 6 ft Sun High Zone 4b
western white clematis Clematis ligusticifolia Vine 1 ft Sun–part shade Medium Zone 3b
white alder Alnus rhombifolia Tree 65 ft Shade-tolerant High Zone 5a
white panicle aster Symphyotrichum lanceolatum Wildflower (forb) 6 ft Sun–part shade High Zone 3b
widgeongrass Ruppia maritima Wildflower (forb) 2 in Sun High Zone 7a
yerba mansa Anemopsis californica Wildflower (forb) 1.5 ft Sun High Zone 9b

Other native species recorded here 83

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 wild carrot Daucus pusillus
  • American yellowrocket Barbarea orthoceras
  • arroyo willow Salix lasiolepis
  • bearded flatsedge Cyperus squarrosus
  • bigbract verbena Verbena bracteata
  • bladderpod spiderflower Cleome isomeris
  • bog yellowcress Rorippa palustris
  • brittle bladderfern Cystopteris fragilis
  • buffalobur nightshade Solanum rostratum
  • Canada spikesedge Eleocharis geniculata
  • Canada toadflax Nuttallanthus canadensis
  • carelessweed Amaranthus palmeri
  • Carolina geranium Geranium carolinianum
  • catchfly prairie gentian Eustoma exaltatum
  • chairmaker's bulrush Schoenoplectus americanus
  • coastal sandbur Cenchrus spinifex
  • cottonbatting plant Pseudognaphalium stramineum
  • Cuman ragweed Ambrosia psilostachya
  • curlytop knotweed Polygonum lapathifolium
  • ditch rabbitsfoot grass Polypogon interruptus
  • dwarf saltwort Salicornia bigelovii
  • flatspine bur ragweed Ambrosia acanthicarpa
  • floating marshpennywort Hydrocotyle ranunculoides
  • fringed willowherb Epilobium ciliatum
  • grand redstem Ammannia robusta
  • great ragweed Ambrosia trifida
  • green carpetweed Mollugo verticillata
  • hairy waterclover Marsilea vestita
  • hedge false bindweed Calystegia sepium
  • horned pondweed Zannichellia palustris
  • lanceleaf fogfruit Phyla lanceolata
  • Louisiana vetch Vicia ludoviciana
  • manyflower marshpennywort Hydrocotyle umbellata
  • manyflowered monkeyflower Mimulus floribundus
  • marsh bristlegrass Setaria parviflora
  • Menzies' fiddleneck Amsinckia menziesii
  • Mexican lovegrass Eragrostis mexicana
  • Mojave seablite Suaeda moquinii
  • narrowleaf four o'clock Mirabilis linearis
  • neckweed Veronica peregrina
  • pale spikerush Eleocharis macrostachya
  • pitseed goosefoot Chenopodium berlandieri
  • povertyweed Iva axillaris
  • prairie plantain Plantago elongata
  • Pursh seepweed Suaeda calceoliformis
  • redseed plantain Plantago rhodosperma
  • rough barnyardgrass Echinochloa muricata
  • salt sandspurry Spergularia salina
  • sand spikerush Eleocharis montevidensis
  • sandpaper vervain Verbena scabra
  • scarlet beeblossom Oenothera suffrutescens
  • seaside arrowgrass Triglochin maritima
  • seawrack Zostera marina
  • shortseed waterwort Elatine brachysperma
  • silverleaf nightshade Solanum elaeagnifolium
  • silverscale saltbush Atriplex argentea
  • sixweeks threeawn Aristida adscensionis
  • sleepy silene Silene antirrhina
  • slender-spire orchid Piperia unalascensis
  • southern cattail Typha domingensis
  • spiral ditchgrass Ruppia cirrhosa
  • spotted water hemlock Cicuta maculata
  • spreading fleabane Erigeron divergens
  • stream orchid Epipactis gigantea
  • tarragon Artemisia dracunculus
  • Texas toadflax Nuttallanthus texanus
  • tower rockcress Arabis glabra
  • upright burhead Echinodorus berteroi
  • verrucose seapurslane Sesuvium verrucosum
  • Virginia pepperweed Lepidium virginicum
  • warty spurge Euphorbia spathulata
  • water pygmyweed Crassula aquatica
  • wavyleaf thistle Cirsium undulatum
  • wedgeleaf draba Draba cuneifolia
  • western marsh cudweed Gnaphalium palustre
  • western tansymustard Descurainia pinnata
  • whorled marshpennywort Hydrocotyle verticillata
  • willow dock Rumex salicifolius
  • Wright's cudweed Pseudognaphalium canescens
  • yellowseed false pimpernel Lindernia dubia
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.

  • biennial wormwoodArtemisia biennis
  • common reedPhragmites australis
  • floating primrose-willowLudwigia peploides

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, Orange County and California
MeasureOrange CountyTypical countyStatewide
Native species 216 333 1,108
Garden-ready natives 133 239 720
Tree 23 — 111
Shrub 24 — 140
Wildflower (forb) 116 — 559
Grass or grass-like 42 — 253
Vine 6 — 16
Fern 5 — 29

Neighboring counties

Counties that share a ZIP code with Orange 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
Orange County (county FIPS 06059), California. 216 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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