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

DecSep

2015
2014
2013
2012
2011
2010
Foeniculum vulgare
fennel

JuneMar

2015
2014
2013
2012
2011
2010
Apium graveolens
celery

AprDec

2014
2013
2012
2011

Asteraceae
Cotula coronopifolia
Brass Buttons

All year

2014
2013
2012
Baccharis pilularis
Coyote Bush

JulyDec

2014
2013
2012
2011
2010
Baccharis plummerae
Plummer’s Baccharis

JuneDec

2014
2013
2012
2011
2009
Baccharis salicifolia
Mulefat

JulyMay

2015
2014
2013
2012
2011
Corethrogyne filaginifolia
California Aster

JulyFeb

2015
2014
2013
2011
Ericameria ericoides
Mock Heather

JulyApr

2015
2014
2013
2012
Erigeron canadensis
Horseweed

AprFeb

2014
2013
2012
2011
2010
Erigeron foliosus
leafy fleabane

AprJan

2014
2013
2012
2011
2010
Gutierrezia californica
California Matchweed

JulyDec

2014
2013
2011
Hazardia squarrosa
sawtooth goldenbush

JulyJan

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

SepJan

2014
2013
2011
Pseudognaphalium beneolens
fragrant everlasting

DecMay

2015
2013
2012
2011
Pseudognaphalium biolettii
twocolor cudweed

AugMay

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

MayDec

2014
2013
2012
2011
Ambrosia psilostachya
Western ragweed

MayJan

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

MayDec

2014
Centromadia parryi
Southern tarplant

MayFeb

2014
2013
2012
2011
Deinandra fasciculata
clustered tarweed

AprDec

2014
2013
2012
2011
2010
Deinandra increscens
Grassland tarweed

JuneJan

2014
2013
2012
2011
Venegasia carpesioides
canyon sunflower

All year

2015
2014
2013
2012
2011
2010
2009
Delairea odorata
Cape Ivy

NovMay

2015
2014
2013
2012
2011
2010
Lepidospartum squamatum
Scalebroom

AugDec

2014
2012
Senecio flaccidus
threadleaf ragwort

MayDec

2014
2013
2012
2011
2010
Senecio vulgaris
Old man of Spring

DecMay

2015
2014
2013
2012
Carduus tenuiflorus
Slender thistle

NovJune

2015
2014
2013
2012
2011
2010
Silybum marianum
milk thistle

All year

2014
2013
2012
2011
2010
Centaurea solstitialis
Yellow star thistle

MarDec

2014
2013
2012
2011
2010
Hypochaeris radicata
Hairy Cat’s ear

All year

2014
2013
2012
2011
Lactuca serriola
Prickly Lettuce

MayJan

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

JuneJan

2015
2014
2013
2012
2011
2010
2009
Stephanomeria exigua
Small Wirelettuce

JuneDec

2014
2013
2011
Stephanomeria virgata
Tall Stephanomeria

JuneFeb

2015
2014
2013
2012
2011
2010
Taraxacum officionale
Dandelion

FebAug

2012
2011
Xanthium strumarium
Cocklebur

FebMar

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

DecJan

2015
2014
2012
2011
2010

Apocynaceae
Vinca major
periwinkle

All year

2015
2014
2013
2012
2011
2010

Lamiaceae
Stachys rigida
woodmint

DecOct

2015
2014
2013
2012
2011
2010
Salvia mellifera
black sage

DecSep

2015
2014
2013
2012
2011
2010
2009
Salvia spathacea
hummingbirdsage

NovJuly

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

FebSep

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

DecAug

2015
2014
2013
2012
2011
2010
Cuscuta californica
California Dodder

All year

2014
2013
2012
2011
Cuscuta salina
saltmarsh Dodder

AprFeb

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

FebOct

2015
2014
2013
2012
2011
2010

Ericaceae
Arctostaphylos glauca
great berry manzanita

NovApr

2015
2014
2013
2012
2011
2010
2007

Grossulariaceae
Ribes californicum
Hillside gooseberry

FebMar

2015
2014
2012
Ribes indecorum
White-flowering currant

DecFeb

2015
2014
Ribes malvaceum
Chaparral currant

SepMay

2015
2014
2013
2012
2011
2010
Ribes menziesii
Canyon Gooseberry

DecMar

2015
2013
2012
2011
2010
Ribes speciosum
Fuchsia-flowered gooseberry

DecApr

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

DecFeb

2015
2014
2012
2011
Chenopodium murale
Nettle-leaved goosefoot

DecJune

2015
2013
2012
2011
Salsola tragus
Tumbleweed

MarDec

2014
2013
2012
2011

Caryophyllaceae
Stellaria media
chickweed

DecJune

2015
2014
2013
2012
2011

Frankeniaceae
Frankenia salina
Alkali heath

AprFeb

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

DecJuly

2015
2014
2013
2012
2011
2010

Polygonaceae
?Eriogonum baileyi
Bailey’s Buckwheat

MayDec

2014
2013
Eriogonum elongatum
Longstem Buckwheat

JulyJan

2015
2014
2013
2012
2011
Eriogonum fasciculatum
California Buckwheat

FebDec

2015
2014
2013
2012
2011
2010
2009
Eriogonum nudum
Nude Buckwheat

JuneDec

2014
2013
2011
Eriogonum parvifolium
Seacliff Buckwheat

All year

2015
2014
2013
2012
2011
Persicaria lapathifolia
Common knotweed

SepDec

2014
2013
Rumex pulcher
Fiddle dock

NovJan

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

DecMay

2015
2014
2013
2012
2011
2010
2009
Lobularia maritima
Sweet Alyssum

DecJune

2013
2012
2011
Nasturtium officinale
watercress

FebDec

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

DecAug

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

OctApr

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

JuneJan

2014
2013
2012
2011
2010
Epilobium ciliatum
Common Willowherb

MayDec

2014
2013
2012
Oenothera elata
Evening Primrose

All year

2015
2014
2013
2012
2011
2010

Anacardiaceae
Rhus integrifolia
Lemonade Berry

SepApr

2015
2014
2013
2012
2011
Toxicodendron diversilobum
poison oak

DecMay

2015
2014
2013
2012
2011
2010
2009

Cucurbitaceae
Cucurbita foetidissima
Calabazilla

MayDec

2014
2013
Marah fabaceus
common manroot

NovJune

2015
2014
2013
2012
2011
2010
2009
2008

Fabaceae
Lathyrus vestitus
common pacific pea

SepJune

2015
2014
2013
2012
2011
2010
Vicia villosa
Hairy Vetch

DecJuly

2015
2014
2013
2012
2011
2010
2006
Lupinus succulentus
arroyo lupine

DecJuly

2015
2014
2013
2012
2011
2010
2009
Acmispon glaber
Deerweed

All year

2015
2014
2013
2012
2011
2010
Acmispon grandiflorus
Chaparral lotus

DecJune

2015
2014
2013
2012
2011
2010
Lotus corniculatus
Birdsfoot Trefoil

DecJune

2015
2014
2013
2012
2011
Melilotus albus
white sweet clover

All year

2015
2014
2013
2012
2011
2010
Melilotus indicus
yellow sweet clover

SepJuly

2015
2014
2013
2012
2011
2010

Betulaceae
Alnus rhombifolia
white alder

DecFeb

2015
2014
2013

Rhamnaceae
Ceanothus megacarpus
Bigpod Ceanothus

DecJune

2015
2014
2013
2012
2011
2008
Ceanothus spinosus
Greenbark

DecAug

2015
2014
2013
2012
2011
2010
2009
Ceanothus thyrsiflorus
Blue Bush

DecJune

2015
2014
2013
2012
2011
2010
2009

Rosaceae
Heteromeles arbutifolia
Toyon

FebDec

2014
2013
2012
2011
2010
Rubus ursinus
california blackberry

DecJuly

2015
2014
2013
2012
2011
2010

Euphorbiaceae
Croton californicus
California croton

All year

2015
2014
2013
2012
2011
2010
Croton setigerus
Dove weed

MayDec

2014
2013
2012
2011
Ricinus communis
Castor bean

All year

2014
2013
2012
2011
2010

Oxalidaceae
Oxalis corniculata
Yellow Sorrel

DecJune

2015
2014
2013
2012
2011
Oxalis pes-caprae
sourgrass

NovJune

2015
2014
2013
2012
2011
2010

Papaveraceae
Dendromecon rigida
Bush poppy

All year

2015
2014
2013
2012
2011
2010
2009
Ehrendorferia chrysantha
Golden Eardrops

MayMar

2014
2013
2012
2011
2010
Eschscholzia californica
California poppy

DecOct

2015
2014
2013
2012
2011
2010
2009
2008

Lauraceae
Umbellularia californica
california bay laurel

DecApr

2015
2014
2013
2012
2011
2010
2009

Noticed 141 flowers that have bloomed in December.

◁ November | January ▷

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