Wildflowers Blooming in Arizona in September (41 Species)

41 wildflowers were recorded blooming in Arizona in September in our iNaturalist sample; 6 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 September

Sacred Datura57 obs.

Trailing Windmills54 obs.

Rocky Mountain Beeplant46 obs.

Silverleaf Nightshade39 obs.

Chinchweed37 obs.

Saguaro31 obs.

Desert Tobacco26 obs.

All wildflowers blooming in Arizona in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	Sacred Datura	Datura wrightii	nightshade family	57	May (past peak)
2	Trailing Windmills	Allionia incarnata	four o'clock family	54	Apr (past peak)
3	Rocky Mountain Beeplant	Cleomella serrulata	Spider Flower Family	46	Aug (past peak)
4	Silverleaf Nightshade	Solanum elaeagnifolium	nightshade family	39	Aug (past peak)
5	Chinchweed	Pectis papposa	Sunflowers, Daisies, Asters, and Allies	37	Oct (rising)
6	Saguaro	Carnegiea gigantea	cacti	31	May (past peak)
7	Desert Tobacco	Nicotiana obtusifolia	nightshade family	26	Apr (past peak)
8	Creosote Bush	Larrea tridentata	caltrops	23	Apr (past peak)
9	Puncture Vine	Tribulus terrestris	caltrops	21	Aug (past peak)
10	Desert Willow	Chilopsis linearis	bignonia family	20	May (past peak)
11	Rock Hibiscus	Hibiscus denudatus	Mallow and Hibiscus Family	18	Mar (past peak)
12	Cowpen Daisy	Verbesina encelioides	Sunflowers, Daisies, Asters, and Allies	18	Sep (peak)
13	Great Mullein	Verbascum thapsus	figwort family	17	Aug (past peak)
14	Cardinal Flower	Lobelia cardinalis	bellflower family	16	Sep (peak)
15	Common Yarrow	Achillea millefolium	Sunflowers, Daisies, Asters, and Allies	16	Jul (past peak)
16	Cardinal Catchfly	Silene laciniata	pink family	16	Aug (past peak)
17	Desert Marigold	Baileya multiradiata	Sunflowers, Daisies, Asters, and Allies	16	Apr (past peak)
18	Desert Thorn-Apple	Datura discolor	nightshade family	16	Oct (rising)
19	Field Bindweed	Convolvulus arvensis	bindweed family	14	Jun (past peak)
20	Common Sunflower	Helianthus annuus	Sunflowers, Daisies, Asters, and Allies	14	Sep (peak)
21	Snapdragon Vine	Maurandella antirrhiniflora	Plantain Family	14	Aug (past peak)
22	Sweetbush	Bebbia juncea	Sunflowers, Daisies, Asters, and Allies	13	Apr (past peak)
23	Mule Fat	Baccharis salicifolia	Sunflowers, Daisies, Asters, and Allies	12	Aug (past peak)
24	Camphorweed	Heterotheca subaxillaris	Sunflowers, Daisies, Asters, and Allies	12	Sep (peak)
25	Tree Tobacco	Nicotiana glauca	nightshade family	11	Apr (past peak)
26	Texas bindweed	Convolvulus equitans	bindweed family	11	May (past peak)
27	California fuchsia	Epilobium canum	evening primrose family	10	Oct (rising)
28	Upright Prairie Coneflower	Ratibida columnifera	Sunflowers, Daisies, Asters, and Allies	10	Jul (past peak)
29	Scarlet Gilia	Ipomopsis aggregata	phlox family	9	Aug (past peak)
30	Buttonbush	Cephalanthus occidentalis	madder family	9	Sep (peak)
31	California Barrel Cactus	Ferocactus cylindraceus	cacti	9	May (past peak)
32	Pinesap	Monotropa hypopitys	heath family	9	Aug (past peak)
33	Nodding Onion	Allium cernuum	amaryllis, onions, and allies	9	Aug (past peak)
34	Rubber Rabbitbrush	Ericameria nauseosa	Sunflowers, Daisies, Asters, and Allies	8	Oct (rising)
35	Common Purslane	Portulaca oleracea	purslane family	8	Aug (past peak)
36	Plains Coreopsis	Coreopsis tinctoria	Sunflowers, Daisies, Asters, and Allies	8	Jul (past peak)
37	Whitemouth Dayflower	Commelina erecta	Spiderworts	7	Aug (past peak)
38	Buffalo-Bur	Solanum rostratum	nightshade family	7	Jul (past peak)
39	Ocotillo	Fouquieria splendens	ocotillo family	6	Apr (past peak)
40	Firewheel	Gaillardia pulchella	Sunflowers, Daisies, Asters, and Allies	6	Sep (peak)
41	Yellow Sweetclover	Melilotus officinalis	Legumes	6	Jun (past peak)