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white

yellow

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brown

red

white flowers

Amaryllidaceae
Allium haematochiton Red-Skinned Onion Feb–Apr
Asparagaceae
Chlorogalum pomeridianum Waxy leaved soap lily Apr–July	Hesperoyucca whipplei Chaparral yucca Apr–Aug
Liliaceae
Calochortus albus White fairy lantern Mar–July	Calochortus catalinae Catalina Mariposa Lily Feb–June	Calochortus venustus Butterfly Mariposa lily Apr–June
Melanthiaceae
Toxicoscordion fremontii Star Lily Feb–July
Orchidaceae
Epipactis gigantea Stream Orchid Apr–June	Piperia elongata Dense-flowered Rein Orchid June–Aug	Piperia michaelii Michael’s Rein Orchid May–June
Xanthorrhoeaceae
Asphodelus fistulosus Asphodel All year
Cyperaceae
Cyperus eragrostis Tall Flatsedge July	Cyperus involucratus Umbrella Plant November	Schoenoplectus pungens Common Three-Square Bulrush Apr–May
Juncaceae
?Juncus dubius Mariposa Rush	Juncus effusus Bog Rush May	Juncus textilis Indian Rush
Poaceae
Cortaderia jubata Pampas Grass
Apiaceae
Osmorhiza brachypoda California Sweet Cicely Feb–May	Conium maculatum poison hemlock Dec–Sep	Torilis arvensis Field Hedge Parsley May–June
Torilis sp. Hedge parsley Mar–July	Apium graveolens celery Apr–Dec	Daucus pusillus wild carrot Apr–June
Asteraceae
Achillea millefolium Common yarrow Feb–Oct	Artemisia californica Old man’s beard Apr–Nov	Artemisia douglasiana Mugwort June–Oct
Cotula australis Southern Brass Buttons Jan–June	Baccharis pilularis Coyote Bush June–Dec	Baccharis plummerae Plummer’s Baccharis Apr–Dec
Baccharis salicifolia Mulefat July–May	Erigeron bonariensis Flax-leaved Horseweed Feb–Mar	Erigeron canadensis Horseweed Apr–Feb
Logfia filaginoides California Cottonrose February	Pseudognaphalium beneolens fragrant everlasting Dec–May	Pseudognaphalium biolettii twocolor cudweed Aug–May
Pseudognaphalium californicum California pearly everlasting Jan–Nov	Pseudognaphalium canescens white everlasting All year	Pseudognaphalium stramineum Cottonbatting Plant December
Ageratina adenophora sticky snakeroot Feb–Oct	Brickellia nevinii Nevin’s Brickellbush June–Sep	Ambrosia psilostachya Western ragweed May–Jan
Layia platyglossa Tidy Tips Mar–Apr	Hemizonia congesta-luzulifolia Silky Tarweed Apr–Dec	Cirsium occidentale-californicum California thistle Mar–Aug
Malacothrix saxatilis Cliff-aster All year	Malacothrix saxatilis-saxatilis Seaside daisy All year	Rafinesquia californica California Chickory Feb–July
Stephanomeria virgata Tall Stephanomeria May–Feb	Micropus californicus Slender cottonweed Mar–May	Xanthium spinosum Spiny Clotbur September
Xanthium strumarium Cocklebur Feb–Mar
Adoxaceae
Sambucus nigra-caerulea Blue Elderberry All year
Caprifoliaceae
Lonicera subspicata Chaparral honeysuckle All year	Symphoricarpos mollis Trailing Snowberry Apr–July
Garryaceae
Garrya flavescense Ashy Silktassel No Image available Dec–Jan
Rubiaceae
Galium andrewsii phlox-leaved bedstraw Mar–July	Galium aparine common bedstraw Feb–May	?Galium californicum California bedstraw Feb–June
Galium nuttallii climbing bedstraw Feb–July	Galium porrigens graceful bedstraw Feb–Aug
Lamiaceae
Marrubium vulgare Horehound Mar–Nov	Stachys albens white wood mint July–Aug	Lepechinia calycina Pitcher Sage Feb–July
Mentha spicata Spearmint July–Nov	Salvia apiana white sage Apr–Sep
Oleaceae
Fraxinus dipetala Flowering Ash Feb–Apr	Olea europaea European Olive Mar–June
Orobanchaceae
Cordylanthus rigidus Rigid Bird’s Beak May–Nov
Plantaginaceae
?Antirrhinum coulterianum Coulter’s snapdragon June–Aug	Antirrhinum multiflorum Sticky snapdragon Mar–Aug	Collinsia bartsiifolia white blue-eyed Mary Apr–June
Keckiella breviflora Gaping Penstemon June–July	Plantago erecta Foothill Plantain Feb–June	Plantago lanceolata English Plantain All year
Convolvulaceae
Calystegia macrostegia Coastal Morning Glory All year	Calystegia malacophylla Woolly Morning Glory May–Aug	Calystegia purpurata-purpurata Pacific false bindweed Dec–Aug
Convolvulus arvensis bindweed Apr–Nov	Cuscuta californica California Dodder All year	Cuscuta salina saltmarsh Dodder Apr–Feb
Solanaceae
Datura wrightii Sacred Datura All year	Solanum douglasii white nightshade All year
Boraginaceae
Cryptantha decipiens Gravel Popcornflower Mar–Apr	Cryptantha sp. popcornflower Jan–Aug	Heliotropium curassavicum Salt Heliotrope May–Nov
Eriodictyon tomentosum Woolly yerba santa May–Sep	Eucrypta chrysanthemifolia spotted hideseed Jan–July	Phacelia grandiflora large flowered phacelia Feb–Aug
Phacelia imbricata Imbricate Phacelia Apr–Oct	Phacelia viscida-albiflora white Sticky Phacelia Jan–July
Cornaceae
Cornus sericea Creek Dogwood Mar–Oct
Ericaceae
Arbutus menziesii Pacific Madrone Feb–May	Arctostaphylos glandulosa Eastwood manzanita Jan–May	Arctostaphylos glauca great berry manzanita Nov–Apr
Arctostaphylos refugioensis Refugio Manzanita Jan–Feb	Comarostaphylis diversifolia Summer Holly Feb–July
Polemoniaceae
Gilia angelensis Chaparral Gilia March	Gilia capitata Globe gilia Feb–July	Leptosiphon parviflorus Variable Linanthus Jan–June
Linanthus dichotomus Evening Snow March
Styracaceae
Styrax redivivus Snowdrop bush Mar–June
Grossulariaceae
Ribes amarum Bitter gooseberry Jan–Mar	Ribes californicum Hillside gooseberry Feb–Mar	Ribes indecorum White-flowering currant Dec–Feb
Ribes menziesii Canyon Gooseberry Dec–Mar
Saxifragaceae
Boykinia occidentalis Brook Foam June–Sep	Lithophragma affine Woodland Star Mar–May	Lithophragma cymbalaria Mission Star Feb–May
Micranthes californica California Saxifrage Feb–May
Amaranthaceae
Atriplex lentiformis Big Saltbush May–Sep	Atriplex leucophylla Dune Saltbush Dec–May	Chenopodium berlandieri Pit Seed Goosefoot Dec–Mar
Chenopodium californicum Soap Plant Feb–May	Extriplex californica California Saltbush June	Salsola tragus Tumbleweed Mar–Dec
Caryophyllaceae
Minuartia douglasii Douglas’s Sandwort Mar–Apr	Silene gallica Windmill Pink Jan–July	Spergularia villosa Hairy Sand Spurrey April
Stellaria media chickweed Dec–June
Montiaceae
Claytonia perfoliata miner’s lettuce Jan–June
Polygonaceae
?Eriogonum baileyi Bailey’s Buckwheat May–Dec	Eriogonum elongatum Longstem Buckwheat July–Jan	Eriogonum fasciculatum California Buckwheat Feb–Dec
Eriogonum giganteum St. Catherine’s lace May–Aug	Eriogonum nudum Nude Buckwheat June–Dec	Eriogonum parvifolium Seacliff Buckwheat All year
Eriogonum saxatile Rock Buckwheat June	Eriogonum viridescens Bright Green Buckwheat June	Pterostegia drymarioides Fairy Mist Feb–May
Brassicaceae
Capsella bursa-pastoris Shepherd’s purse Jan–May	Cardamine californica milk maids Dec–May	Cardamine oligosperma bittercress Jan–Apr
Caulanthus lasiophyllus California mustard Feb–June	Draba verna Spring Whitlow Grass Mar–Apr	Lepidium nitidum Common Peppergrass
Lobularia maritima Sweet Alyssum Dec–June	Nasturtium officinale watercress Feb–Dec	Raphanus ssp wild radish All year
Thysanocarpus curvipes Fringe Pod Feb–May
Malvaceae
Malvella leprosa Alkali mallow May–Nov
Myrtaceae
Eucalyptus globulus Blue gum Oct–Apr
Onagraceae
Clarkia epilobiodes Willow Herb Clarkia Mar–May	Gaura coccinea Linda tarde Mar–Oct
Anacardiaceae
Malosma laurina Laurel sumac January	Rhus integrifolia Lemonade Berry Sep–Apr	Rhus ovata Sugar sumac Feb–June
Toxicodendron diversilobum poison oak Dec–May
Sapindaceae
Acer macrophyllum big-leaved maple Feb–Apr
Cucurbitaceae
Marah fabaceus common manroot Nov–June
Datiscaceae
Datisca glomerata Durango Root Apr–July
Fabaceae
Lathyrus vestitus common pacific pea Sep–June	Vicia villosa Hairy Vetch Dec–July	Astragalus filipes Milkvetch Feb–June
Lupinus bicolor miniature lupine Feb–June	Lupinus chamissonis Dune lupine Feb–Oct	Lupinus hirsutissimus stinging lupine Jan–June
Lupinus nanus sky lupine Feb–June	Lupinus succulentus arroyo lupine Dec–July	Acmispon grandiflorus Chaparral lotus Dec–June
Hosackia crassifolia big deervetch June	Rupertia physodes California Tea May–June	Melilotus albus white sweet clover All year
Betulaceae
Alnus rhombifolia white alder Dec–Feb
Fagaceae
Quercus agrifolia Coast live oak Jan–May	Quercus douglasii Blue Oak Feb–Mar	Quercus lobata Valley Oak Feb–Mar
Quercus sp Scrub Oak Feb–May
Rhamnaceae
Ceanothus crassifolius Hoary-leaved Ceanothus Jan–June	Ceanothus cuneatus Buck-brush Jan–Apr	Ceanothus megacarpus Bigpod Ceanothus Dec–June
Rhamnus californica Coffee Berry Apr–July	Rhamnus crocea Spiny Redberry Feb–Mar	Rhamnus ilicifolia Holly-leaved Redberry Feb–May
Rosaceae
Adenostoma fasciculatum Chamise Mar–Sep	Cercocarpus betuloides Mountain Mahogany Feb–June	Drymocallis glandulosa Sticky Potentilla Mar–June
Heteromeles arbutifolia Toyon Feb–Dec	Holodiscus discolor Rockspiraea May–July	Horkelia cuneata Wedge-leaved horkelia Mar–June
Prunus ilicifolia Holly-leaved cherry Jan–June	Rubus ursinus california blackberry Dec–July
Urticaceae
Urtica dioica Stinging Nettle May–Oct
Euphorbiaceae
Croton californicus California croton All year	Croton setigerus Dove weed May–Dec	Euphorbia crenulata Chinese Caps Jan–May
Euphorbia dendroides Tree Spurge Jan–June	Ricinus communis Castor bean All year
Linaceae
Hesperolinon micranthum Common Dwarf Flax May–June
Salicaceae
Populus fremontii Freemont cottonwood March	Populus trichocarpa Black cottonwood Feb–Mar	Salix exigua Sandbar Willow
Salix lasiolepis Arroyo Willow Jan–Mar
Papaveraceae
Ehrendorferia ochroleuca Cream-flowered Eardrops April	Fumaria officinalis Drug fumitory Mar–May	Fumaria parviflora fine leaved fumitory Jan–Apr
Meconella denticulata Smallflowered Fairypoppy Mar–Apr	Platystemon californicus Cream Puffs Mar–May
Ranunculaceae
Clematis lasiantha wild clematis Jan–May	Clematis ligusticifolia Creek Clematis June–Nov	Thalictrum fendleri Fendler’s Meadow-rue Feb–May
Lauraceae
Umbellularia californica california bay laurel Dec–Apr
Saururaceae
Anemopsis californica Yerba mansa May