Wildflowers Blooming in Utah in September (58 Species)

58 wildflowers were recorded blooming in Utah in September in our iNaturalist sample; 13 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Top wildflowers in September

Curlycup Gumweed183 obs.

Rocky Mountain Beeplant168 obs.

Rubber Rabbitbrush162 obs.

Common Sunflower118 obs.

Sacred Datura111 obs.

Field Bindweed60 obs.

Alfalfa51 obs.

Scarlet Gilia38 obs.

Yellow Sweetclover38 obs.

California fuchsia37 obs.

Great Mullein32 obs.

Common Yarrow30 obs.

All wildflowers blooming in Utah in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	Curlycup Gumweed	Grindelia squarrosa	Sunflowers, Daisies, Asters, and Allies	183	Aug (past peak)
2	Rocky Mountain Beeplant	Cleomella serrulata	Spider Flower Family	168	Aug (past peak)
3	Rubber Rabbitbrush	Ericameria nauseosa	Sunflowers, Daisies, Asters, and Allies	162	Oct (rising)
4	Common Sunflower	Helianthus annuus	Sunflowers, Daisies, Asters, and Allies	118	Sep (peak)
5	Sacred Datura	Datura wrightii	nightshade family	111	Sep (peak)
6	Field Bindweed	Convolvulus arvensis	bindweed family	60	Jun (past peak)
7	Alfalfa	Medicago sativa	Legumes	51	Jun (past peak)
8	Scarlet Gilia	Ipomopsis aggregata	phlox family	38	Jun (past peak)
9	Yellow Sweetclover	Melilotus officinalis	Legumes	38	Jun (past peak)
10	California fuchsia	Epilobium canum	evening primrose family	37	Sep (peak)
11	Great Mullein	Verbascum thapsus	figwort family	32	Aug (past peak)
12	Common Yarrow	Achillea millefolium	Sunflowers, Daisies, Asters, and Allies	30	Jul (past peak)
13	Cardinal Flower	Lobelia cardinalis	bellflower family	26	Sep (peak)
14	Fireweed	Chamaenerion angustifolium	evening primrose family	25	Jul (past peak)
15	Musk Thistle	Carduus nutans	Sunflowers, Daisies, Asters, and Allies	24	Jul (past peak)
16	Pearly Everlasting	Anaphalis margaritacea	Sunflowers, Daisies, Asters, and Allies	22	Jul (past peak)
17	Shrubby Cinquefoil	Dasiphora fruticosa	rose family	19	Jul (past peak)
18	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	18	Oct (rising)
19	Bittersweet Nightshade	Solanum dulcamara	nightshade family	18	Jul (past peak)
20	Richardson's geranium	Geranium richardsonii	Geranium family	16	Jul (past peak)
21	Puncture Vine	Tribulus terrestris	caltrops	15	Sep (peak)
22	Desert Trumpet	Eriogonum inflatum	knotweed family	13	May (past peak)
23	Firewheel	Gaillardia pulchella	Sunflowers, Daisies, Asters, and Allies	12	Sep (peak)
24	White Sweetclover	Melilotus albus	Legumes	12	Jul (past peak)
25	Creeping Thistle	Cirsium arvense	Sunflowers, Daisies, Asters, and Allies	12	Sep (peak)
26	Fendler's Sandmat	Euphorbia fendleri	Spurge Family	12	Jun (past peak)
27	Redstem Stork's-bill	Erodium cicutarium	Geranium family	11	Mar (past peak)
28	Desert Willow	Chilopsis linearis	bignonia family	11	Jun (past peak)
29	Red Clover	Trifolium pratense	Legumes	10	Jul (past peak)
30	Bull Thistle	Cirsium vulgare	Sunflowers, Daisies, Asters, and Allies	10	Aug (past peak)
31	Upright Prairie Coneflower	Ratibida columnifera	Sunflowers, Daisies, Asters, and Allies	10	Jul (past peak)
32	Silverleaf Nightshade	Solanum elaeagnifolium	nightshade family	10	Sep (peak)
33	Lewis flax	Linum lewisii	Flax Family	9	Jun (past peak)
34	Purple Loosestrife	Lythrum salicaria	lythrum family	9	Aug (past peak)
35	Trailing Windmills	Allionia incarnata	four o'clock family	9	Sep (peak)
36	Common Dandelion	Taraxacum officinale	Sunflowers, Daisies, Asters, and Allies	7	May (past peak)
37	Tall Evening Primrose	Oenothera elata	evening primrose family	7	Sep (peak)
38	White Clover	Trifolium repens	Legumes	7	Jul (past peak)
39	Wild Teasel	Dipsacus fullonum	honeysuckle family	7	Jul (past peak)
40	Black Medick	Medicago lupulina	Legumes	7	Jun (past peak)
41	Spotted Knapweed	Centaurea stoebe	Sunflowers, Daisies, Asters, and Allies	7	Sep (peak)
42	Flower-Of-An-Hour	Hibiscus trionum	Mallow and Hibiscus Family	7	Sep (peak)
43	Blue Elder	Sambucus cerulea	elder family	7	Jul (past peak)
44	Lewis' monkeyflower	Erythranthe lewisii	lopseed family	7	Jul (past peak)
45	Yellow Salsify	Tragopogon dubius	Sunflowers, Daisies, Asters, and Allies	6	Jun (past peak)
46	Desert Marigold	Baileya multiradiata	Sunflowers, Daisies, Asters, and Allies	6	Apr (past peak)
47	Sulfur Buckwheat	Eriogonum umbellatum	knotweed family	6	Jul (past peak)
48	Seep Monkeyflower	Erythranthe guttata	lopseed family	6	Jul (past peak)
49	Red Osier Dogwood	Cornus sericea	Dogwood family	5	Jun (past peak)
50	Nodding Beggarticks	Bidens cernua	Sunflowers, Daisies, Asters, and Allies	5	Sep (peak)