12 December

Flowers blooming in December

◁ November | January ▷

Blooming data are based on my personal observations between 2010 and 2015. They are not perfect.

The red bits of the little tables under the flowers indicate when I observed those flowers blooming. The fainter red bits indicate months in which the flower bloomed but for which I neglected to record an exact start (or stop) date. Since these are the observations of one man randomly walking the local trails I may have missed the true start/stop by several weeks.

All flowers blooming in December

Xanthorrhoeaceae
Asphodelus fistulosus Asphodel All year 2015 2014 2013 2012 2011 2010 2009 2008
Apiaceae
Conium maculatum poison hemlock Dec–Sep 2015 2014 2013 2012 2011 2010	Foeniculum vulgare fennel June–Mar 2015 2014 2013 2012 2011 2010	Apium graveolens celery Apr–Dec 2014 2013 2012 2011
Asteraceae
Cotula coronopifolia Brass Buttons All year 2014 2013 2012	Baccharis pilularis Coyote Bush July–Dec 2014 2013 2012 2011 2010	Baccharis plummerae Plummer’s Baccharis June–Dec 2014 2013 2012 2011 2009
Baccharis salicifolia Mulefat July–May 2015 2014 2013 2012 2011	Corethrogyne filaginifolia California Aster July–Feb 2015 2014 2013 2011	Ericameria ericoides Mock Heather July–Apr 2015 2014 2013 2012
Erigeron canadensis Horseweed Apr–Feb 2014 2013 2012 2011 2010	Erigeron foliosus leafy fleabane Apr–Jan 2014 2013 2012 2011 2010	Gutierrezia californica California Matchweed July–Dec 2014 2013 2011
Hazardia squarrosa sawtooth goldenbush July–Jan 2014 2013 2012 2011 2010	Heterotheca grandiflora telegraph weed All year 2015 2014 2013 2012 2011 2010	Isocoma menziesii Menzies’ goldenbush All year 2015 2014 2013 2012 2011 2010
Solidago velutina California goldenrod All year 2014 2013 2012 2011 2010 2009	Symphyotrichum subulatum Baby’s breath Aster Sep–Jan 2014 2013 2011	Pseudognaphalium beneolens fragrant everlasting Dec–May 2015 2013 2012 2011
Pseudognaphalium biolettii twocolor cudweed Aug–May 2015 2014 2013 2012 2011 2010	Pseudognaphalium canescens white everlasting All year 2015 2014 2013 2012 2011 2010	Pseudognaphalium stramineum Cottonbatting Plant December 2014
Bidens pilosa Beggar’s ticks All year 2015 2014 2013 2012 2011 2010	Brickellia californica California Brickellbush May–Dec 2014 2013 2012 2011	Ambrosia psilostachya Western ragweed May–Jan 2015 2014 2013 2012 2011
Encelia californica Bush sunflower All year 2015 2014 2013 2012 2011 2010	Eriophyllum confertiflorum golden yarrow All year 2014 2013 2012 2011 2010	Hemizonia congesta-luzulifolia Silky Tarweed May–Dec 2014
Centromadia parryi Southern tarplant May–Feb 2014 2013 2012 2011	Deinandra fasciculata clustered tarweed Apr–Dec 2014 2013 2012 2011 2010	Deinandra increscens Grassland tarweed June–Jan 2014 2013 2012 2011
Venegasia carpesioides canyon sunflower All year 2015 2014 2013 2012 2011 2010 2009	Delairea odorata Cape Ivy Nov–May 2015 2014 2013 2012 2011 2010	Lepidospartum squamatum Scalebroom Aug–Dec 2014 2012
Senecio flaccidus threadleaf ragwort May–Dec 2014 2013 2012 2011 2010	Senecio vulgaris Old man of Spring Dec–May 2015 2014 2013 2012	Carduus tenuiflorus Slender thistle Nov–June 2015 2014 2013 2012 2011 2010
Silybum marianum milk thistle All year 2014 2013 2012 2011 2010	Centaurea solstitialis Yellow star thistle Mar–Dec 2014 2013 2012 2011 2010	Hypochaeris radicata Hairy Cat’s ear All year 2014 2013 2012 2011
Lactuca serriola Prickly Lettuce May–Jan 2014 2013 2012 2011	Malacothrix saxatilis Cliff-aster All year 2015 2014 2013 2012 2011 2010	Malacothrix saxatilis-saxatilis Seaside daisy All year 2014 2013 2012 2011
Picris echioides Prickly ox-tongue All year 2014 2013 2012 2011 2010	Sonchus sp. Sow-Thistle All year 2014 2013 2012 2011 2010	Stephanomeria cichoriacea Chicory-leaved wire-lettuce June–Jan 2015 2014 2013 2012 2011 2010 2009
Stephanomeria exigua Small Wirelettuce June–Dec 2014 2013 2011	Stephanomeria virgata Tall Stephanomeria June–Feb 2015 2014 2013 2012 2011 2010	Taraxacum officionale Dandelion Feb–Aug 2012 2011
Xanthium strumarium Cocklebur Feb–Mar 2014 2013 2012 2011
Adoxaceae
Sambucus nigra-caerulea Blue Elderberry All year 2015 2014 2013 2012 2011 2010
Caprifoliaceae
Lonicera subspicata Chaparral honeysuckle All year 2014 2013 2012 2011 2010
Garryaceae
Garrya elliptica Silk tassel Bush Dec–Jan 2015 2014 2012 2011 2010
Apocynaceae
Vinca major periwinkle All year 2015 2014 2013 2012 2011 2010
Lamiaceae
Stachys rigida woodmint Dec–Oct 2015 2014 2013 2012 2011 2010	Salvia mellifera black sage Dec–Sep 2015 2014 2013 2012 2011 2010 2009	Salvia spathacea hummingbirdsage Nov–July 2015 2014 2013 2012 2011 2010 2009
Plantaginaceae
Plantago lanceolata English Plantain All year 2013 2012 2011	Veronica anagallis-aquatica Water Speedwell All year 2014 2013 2012 2011
Scrophulariaceae
Verbascum virgatum Wand Mullein All year 2014 2013 2012 2011 2010
Verbenaceae
Verbena lasiostachys Western verbena Feb–Sep 2014 2013 2012 2011 2010
Convolvulaceae
Calystegia macrostegia Coastal Morning Glory All year 2015 2014 2013 2012 2011 2010	Calystegia purpurata-purpurata Pacific false bindweed Dec–Aug 2015 2014 2013 2012 2011 2010	Cuscuta californica California Dodder All year 2014 2013 2012 2011
Cuscuta salina saltmarsh Dodder Apr–Feb 2015 2014 2013 2012
Solanaceae
Datura wrightii Sacred Datura All year 2015 2014 2013 2012 2011 2010 2009	Nicotiana glauca tree tobacco All year 2015 2014 2013 2012 2011 2010 2009	Solanum douglasii white nightshade All year 2015 2014 2013 2012 2011 2010
Solanum lanceolatum Lance-Leaf Nightshade All year 2014 2013 2012 2011 2010	Solanum xanti purple nightshade All year 2015 2014 2013 2012 2011 2010 2009
Boraginaceae
Nemophila menziesii baby blue eyes All year 2015 2014 2013 2012 2011 2010	Phacelia distans common phacelia Feb–Oct 2015 2014 2013 2012 2011 2010
Ericaceae
Arctostaphylos glauca great berry manzanita Nov–Apr 2015 2014 2013 2012 2011 2010 2007
Grossulariaceae
Ribes californicum Hillside gooseberry Feb–Mar 2015 2014 2012	Ribes indecorum White-flowering currant Dec–Feb 2015 2014	Ribes malvaceum Chaparral currant Sep–May 2015 2014 2013 2012 2011 2010
Ribes menziesii Canyon Gooseberry Dec–Mar 2015 2013 2012 2011 2010	Ribes speciosum Fuchsia-flowered gooseberry Dec–Apr 2015 2014 2013 2012 2011 2010
Aizoaceae
Carpobrotus chilensis Sea Fig All year 2014 2013 2012 2011	Carpobrotus edulis Hottentot Fig All year 2014 2013 2012 2011
Amaranthaceae
Atriplex leucophylla Dune Saltbush May 2013 2012 2011	Chenopodium berlandieri Pit Seed Goosefoot Dec–Feb 2015 2014 2012 2011	Chenopodium murale Nettle-leaved goosefoot Dec–June 2015 2013 2012 2011
Salsola tragus Tumbleweed Mar–Dec 2014 2013 2012 2011
Caryophyllaceae
Stellaria media chickweed Dec–June 2015 2014 2013 2012 2011
Frankeniaceae
Frankenia salina Alkali heath Apr–Feb 2015 2014 2013 2012
Nyctaginaceae
Abronia maritima Red sand verbena All year 2015 2014 2013 2012 2011 2010	Abronia umbellata Pink sand verbena All year 2015 2014 2013 2012 2011 2010	Mirabilis laevis Wishbone bush Dec–July 2015 2014 2013 2012 2011 2010
Polygonaceae
?Eriogonum baileyi Bailey’s Buckwheat May–Dec 2014 2013	Eriogonum elongatum Longstem Buckwheat July–Jan 2015 2014 2013 2012 2011	Eriogonum fasciculatum California Buckwheat Feb–Dec 2015 2014 2013 2012 2011 2010 2009
Eriogonum nudum Nude Buckwheat June–Dec 2014 2013 2011	Eriogonum parvifolium Seacliff Buckwheat All year 2015 2014 2013 2012 2011	Persicaria lapathifolia Common knotweed Sep–Dec 2014 2013
Rumex pulcher Fiddle dock Nov–Jan 2012 2011
Portulacaceae
Portulaca oleracea Common Purslane April 2014
Brassicaceae
Brassica nigra black mustard All year 2015 2014 2013 2012 2011 2010 2009 2008	Brassica rapa field mustard All year 2015 2014 2013 2012 2011 2010	Cakile maritima sea rocket All year 2015 2014 2013 2012 2011 2010
Cardamine californica milk maids Dec–May 2015 2014 2013 2012 2011 2010 2009	Lobularia maritima Sweet Alyssum Dec–June 2013 2012 2011	Nasturtium officinale watercress Feb–Dec 2014 2013 2012 2011 2010
Raphanus ssp wild radish All year 2015 2014 2013 2012 2011 2010
Tropaeolaceae
Tropaeolum majus Nasturtium All year 2014 2013 2012 2011 2010
Geraniaceae
Erodium cicutarium Red-stemmed storksbill Dec–Aug 2015 2014 2013 2012 2011 2010
Cistaceae
Helianthemum scoparium Common Rush-Rose All year 2015 2014 2013 2012 2011 2010
Malvaceae
Malacothamnus fasciculatus Chaparral mallow All year 2014 2013 2012 2011 2010	Malva nicaeensis bull mallow All year 2015 2014 2013 2012 2011 2010
Myrtaceae
Eucalyptus globulus Blue gum Oct–Apr 2015 2014 2013 2012 2011 2010 2009 2008
Onagraceae
Camissoniopsis cheiranthifolia Beach Evening Primrose All year 2015 2014 2013 2012 2011 2010	Epilobium canum California-fuchsia June–Jan 2014 2013 2012 2011 2010	Epilobium ciliatum Common Willowherb May–Dec 2014 2013 2012
Oenothera elata Evening Primrose All year 2015 2014 2013 2012 2011 2010
Anacardiaceae
Rhus integrifolia Lemonade Berry Sep–Apr 2015 2014 2013 2012 2011	Toxicodendron diversilobum poison oak Dec–May 2015 2014 2013 2012 2011 2010 2009
Cucurbitaceae
Cucurbita foetidissima Calabazilla May–Dec 2014 2013	Marah fabaceus common manroot Nov–June 2015 2014 2013 2012 2011 2010 2009 2008
Fabaceae
Lathyrus vestitus common pacific pea Sep–June 2015 2014 2013 2012 2011 2010	Vicia villosa Hairy Vetch Dec–July 2015 2014 2013 2012 2011 2010 2006	Lupinus succulentus arroyo lupine Dec–July 2015 2014 2013 2012 2011 2010 2009
Acmispon glaber Deerweed All year 2015 2014 2013 2012 2011 2010	Acmispon grandiflorus Chaparral lotus Dec–June 2015 2014 2013 2012 2011 2010	Lotus corniculatus Birdsfoot Trefoil Dec–June 2015 2014 2013 2012 2011
Melilotus albus white sweet clover All year 2015 2014 2013 2012 2011 2010	Melilotus indicus yellow sweet clover Sep–July 2015 2014 2013 2012 2011 2010
Betulaceae
Alnus rhombifolia white alder Dec–Feb 2015 2014 2013
Rhamnaceae
Ceanothus megacarpus Bigpod Ceanothus Dec–June 2015 2014 2013 2012 2011 2008	Ceanothus spinosus Greenbark Dec–Aug 2015 2014 2013 2012 2011 2010 2009	Ceanothus thyrsiflorus Blue Bush Dec–June 2015 2014 2013 2012 2011 2010 2009
Rosaceae
Heteromeles arbutifolia Toyon Feb–Dec 2014 2013 2012 2011 2010	Rubus ursinus california blackberry Dec–July 2015 2014 2013 2012 2011 2010
Euphorbiaceae
Croton californicus California croton All year 2015 2014 2013 2012 2011 2010	Croton setigerus Dove weed May–Dec 2014 2013 2012 2011	Ricinus communis Castor bean All year 2014 2013 2012 2011 2010
Oxalidaceae
Oxalis corniculata Yellow Sorrel Dec–June 2015 2014 2013 2012 2011	Oxalis pes-caprae sourgrass Nov–June 2015 2014 2013 2012 2011 2010
Papaveraceae
Dendromecon rigida Bush poppy All year 2015 2014 2013 2012 2011 2010 2009	Ehrendorferia chrysantha Golden Eardrops May–Mar 2014 2013 2012 2011 2010	Eschscholzia californica California poppy Dec–Oct 2015 2014 2013 2012 2011 2010 2009 2008
Lauraceae
Umbellularia californica california bay laurel Dec–Apr 2015 2014 2013 2012 2011 2010 2009

Noticed 141 flowers that have bloomed in December.

◁ November | January ▷