Wildflowers Blooming in California in October (60 Species)

60 wildflowers were recorded blooming in California in October in our iNaturalist sample; 5 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Top wildflowers in October

California fuchsia2,062 obs.

Coyote Brush1,311 obs.

Vinegar Weed598 obs.

Chinchweed434 obs.

Sacred Datura408 obs.

Parish's Goldeneye338 obs.

California Aster279 obs.

Hayfield Tarweed236 obs.

Telegraphweed206 obs.

California Buckwheat199 obs.

Tree Tobacco192 obs.

California poppy174 obs.

All wildflowers blooming in California in October

#	Species	Scientific name	Family	Obs.	Peak in state
1	California fuchsia	Epilobium canum	evening primrose family	2,062	Oct (peak)
2	Coyote Brush	Baccharis pilularis	Sunflowers, Daisies, Asters, and Allies	1,311	Oct (peak)
3	Vinegar Weed	Trichostema lanceolatum	Mint Family	598	Sep (past peak)
4	Chinchweed	Pectis papposa	Sunflowers, Daisies, Asters, and Allies	434	Oct (peak)
5	Sacred Datura	Datura wrightii	nightshade family	408	May (past peak)
6	Parish's Goldeneye	Bahiopsis parishii	Sunflowers, Daisies, Asters, and Allies	338	Mar (past peak)
7	California Aster	Corethrogyne filaginifolia	Sunflowers, Daisies, Asters, and Allies	279	Aug (past peak)
8	Hayfield Tarweed	Hemizonia congesta	Sunflowers, Daisies, Asters, and Allies	236	Sep (past peak)
9	Telegraphweed	Heterotheca grandiflora	Sunflowers, Daisies, Asters, and Allies	206	Sep (past peak)
10	California Buckwheat	Eriogonum fasciculatum	knotweed family	199	Jun (past peak)
11	Tree Tobacco	Nicotiana glauca	nightshade family	192	Apr (past peak)
12	California poppy	Eschscholzia californica	Poppy Family	174	Apr (past peak)
13	Thickleaf Groundcherry	Physalis crassifolia	nightshade family	146	Mar (past peak)
14	Trailing Windmills	Allionia incarnata	four o'clock family	142	Oct (peak)
15	Rush Milkweed	Asclepias subulata	Dogbane Family	141	Dec (rising)
16	Bull Thistle	Cirsium vulgare	Sunflowers, Daisies, Asters, and Allies	130	Jul (past peak)
17	Rubber Rabbitbrush	Ericameria nauseosa	Sunflowers, Daisies, Asters, and Allies	128	Sep (past peak)
18	Common Madia	Madia elegans	Sunflowers, Daisies, Asters, and Allies	123	Jul (past peak)
19	Scarlet Monkeyflower	Erythranthe cardinalis	lopseed family	123	Jul (past peak)
20	Spotted spurge	Euphorbia maculata	Spurge Family	113	Oct (peak)
21	Bladderpod	Cleomella arborea	Spider Flower Family	113	Feb (past peak)
22	Apricot Globemallow	Sphaeralcea ambigua	Mallow and Hibiscus Family	105	Apr (past peak)
23	Yellow Star-Thistle	Centaurea solstitialis	Sunflowers, Daisies, Asters, and Allies	105	Jul (past peak)
24	California Wild Rose	Rosa californica	rose family	104	Jun (past peak)
25	Alkali Heliotrope	Heliotropium curassavicum	borage family	104	Jul (past peak)
26	Redstem Stork's-bill	Erodium cicutarium	Geranium family	98	Mar (past peak)
27	White Clover	Trifolium repens	Legumes	98	Apr (past peak)
28	Creosote Bush	Larrea tridentata	caltrops	98	Mar (past peak)
29	Lawn daisy	Bellis perennis	Sunflowers, Daisies, Asters, and Allies	94	Apr (past peak)
30	European Searocket	Cakile maritima	mustard family	92	Jul (past peak)
31	Island Mallow	Malva assurgentiflora	Mallow and Hibiscus Family	90	Sep (past peak)
32	Red Bush Monkeyflower	Diplacus puniceus	lopseed family	90	Mar (past peak)
33	Chuparosa	Justicia californica	Acanthus Family	88	Mar (past peak)
34	Tall Evening Primrose	Oenothera elata	evening primrose family	86	Jul (past peak)
35	Puncture Vine	Tribulus terrestris	caltrops	82	Sep (past peak)
36	Naked Buckwheat	Eriogonum nudum	knotweed family	81	Jul (past peak)
37	Spanish needle	Palafoxia arida	Sunflowers, Daisies, Asters, and Allies	79	Mar (past peak)
38	Desert Lavender	Condea emoryi	Mint Family	78	Mar (past peak)
39	Turkey Mullein	Croton setiger	Spurge Family	77	Jul (past peak)
40	Desert Sand Verbena	Abronia villosa	four o'clock family	75	Mar (past peak)
41	Sweetbush	Bebbia juncea	Sunflowers, Daisies, Asters, and Allies	74	Dec (rising)
42	Indigo-Bush	Psorodendron schottii	Legumes	73	Apr (past peak)
43	Desert Trumpet	Eriogonum inflatum	knotweed family	71	Dec (rising)
44	White Rhatany	Krameria bicolor	rhatany family	69	Nov (rising)
45	Southern Coastal Bushmallow	Malacothamnus fasciculatus	Mallow and Hibiscus Family	67	May (past peak)
46	California brittlebush	Encelia californica	Sunflowers, Daisies, Asters, and Allies	67	Apr (past peak)
47	Desert Thorn-Apple	Datura discolor	nightshade family	67	Nov (rising)
48	Laurel Sumac	Malosma laurina	Cashew Family	65	Jul (past peak)
49	Orange Bush Monkeyflower	Diplacus aurantiacus	lopseed family	63	Apr (past peak)
50	Emory's rockdaisy	Perityle emoryi	Sunflowers, Daisies, Asters, and Allies	62	Mar (past peak)