Wildflowers Blooming in Ohio in September (60 Species)

60 wildflowers were recorded blooming in Ohio in September in our iNaturalist sample; 29 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

Top wildflowers in September

Great Blue Lobelia547 obs.

brown-eyed Susan545 obs.

Common Jewelweed509 obs.

White Snakeroot438 obs.

Blue Mistflower358 obs.

Wingstem345 obs.

black-eyed Susan305 obs.

New England aster302 obs.

Field Thistle256 obs.

Chicory178 obs.

Pickerelweed154 obs.

American hog-peanut153 obs.

All wildflowers blooming in Ohio in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	Great Blue Lobelia	Lobelia siphilitica	bellflower family	547	Sep (peak)
2	brown-eyed Susan	Rudbeckia triloba	Sunflowers, Daisies, Asters, and Allies	545	Sep (peak)
3	Common Jewelweed	Impatiens capensis	balsam family	509	Sep (peak)
4	White Snakeroot	Ageratina altissima	Sunflowers, Daisies, Asters, and Allies	438	Sep (peak)
5	Blue Mistflower	Conoclinium coelestinum	Sunflowers, Daisies, Asters, and Allies	358	Sep (peak)
6	Wingstem	Verbesina alternifolia	Sunflowers, Daisies, Asters, and Allies	345	Sep (peak)
7	black-eyed Susan	Rudbeckia hirta	Sunflowers, Daisies, Asters, and Allies	305	Jul (past peak)
8	New England aster	Symphyotrichum novae-angliae	Sunflowers, Daisies, Asters, and Allies	302	Sep (peak)
9	Field Thistle	Cirsium discolor	Sunflowers, Daisies, Asters, and Allies	256	Sep (peak)
10	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	178	Sep (peak)
11	Pickerelweed	Pontederia cordata	Pickerelweeds	154	Jul (past peak)
12	American hog-peanut	Amphicarpaea bracteata	Legumes	153	Aug (past peak)
13	Pale Jewelweed	Impatiens pallida	balsam family	152	Sep (peak)
14	Cutleaf Coneflower	Rudbeckia laciniata	Sunflowers, Daisies, Asters, and Allies	140	Aug (past peak)
15	Common Sneezeweed	Helenium autumnale	Sunflowers, Daisies, Asters, and Allies	135	Sep (peak)
16	Bull Thistle	Cirsium vulgare	Sunflowers, Daisies, Asters, and Allies	133	Aug (past peak)
17	Bluestem Goldenrod	Solidago caesia	Sunflowers, Daisies, Asters, and Allies	133	Sep (peak)
18	Red Clover	Trifolium pratense	Legumes	130	Sep (peak)
19	Low Smartweed	Persicaria longiseta	knotweed family	121	Sep (peak)
20	Wild Carrot	Daucus carota	carrot family	118	Jul (past peak)
21	White Clover	Trifolium repens	Legumes	112	Sep (peak)
22	Common Hibiscus	Hibiscus syriacus	Mallow and Hibiscus Family	112	Aug (past peak)
23	Swamp Rose Mallow	Hibiscus moscheutos	Mallow and Hibiscus Family	110	Aug (past peak)
24	Asiatic dayflower	Commelina communis	Spiderworts	108	Sep (peak)
25	Tall Goldenrod	Solidago altissima	Sunflowers, Daisies, Asters, and Allies	108	Sep (peak)
26	White Turtlehead	Chelone glabra	Plantain Family	106	Sep (peak)
27	Late Boneset	Eupatorium serotinum	Sunflowers, Daisies, Asters, and Allies	102	Sep (peak)
28	Flower-Of-An-Hour	Hibiscus trionum	Mallow and Hibiscus Family	100	Sep (peak)
29	Common Boneset	Eupatorium perfoliatum	Sunflowers, Daisies, Asters, and Allies	82	Aug (past peak)
30	Creeping Thistle	Cirsium arvense	Sunflowers, Daisies, Asters, and Allies	78	Jun (past peak)
31	Flat-Topped Goldenrod	Euthamia graminifolia	Sunflowers, Daisies, Asters, and Allies	77	Sep (peak)
32	Fall Phlox	Phlox paniculata	phlox family	74	Sep (peak)
33	Cardinal Flower	Lobelia cardinalis	bellflower family	73	Aug (past peak)
34	Common Selfheal	Prunella vulgaris	Mint Family	73	Jul (past peak)
35	American jumpseed	Persicaria virginiana	knotweed family	70	Aug (past peak)
36	Citronella Horse Balm	Collinsonia canadensis	Mint Family	68	Sep (peak)
37	False Sunflower	Heliopsis helianthoides	Sunflowers, Daisies, Asters, and Allies	62	Jul (past peak)
38	Partridge Pea	Chamaecrista fasciculata	Legumes	58	Aug (past peak)
39	Obedient Plant	Physostegia virginiana	Mint Family	54	Aug (past peak)
40	Sweet Everlasting	Pseudognaphalium obtusifolium	Sunflowers, Daisies, Asters, and Allies	52	Sep (peak)
41	Pinesap	Monotropa hypopitys	heath family	48	Sep (peak)
42	fen grass of Parnassus	Parnassia glauca	staff-vine family	44	Sep (peak)
43	Tall Bellflower	Campanulastrum americanum	bellflower family	44	Jul (past peak)
44	American pokeweed	Phytolacca americana	Pokeweed Family	43	Jul (past peak)
45	Broad-Leaved Goldenrod	Solidago flexicaulis	Sunflowers, Daisies, Asters, and Allies	42	Sep (peak)
46	American burnweed	Erechtites hieraciifolius	Sunflowers, Daisies, Asters, and Allies	41	Sep (peak)
47	Eastern Black Nightshade	Solanum emulans	nightshade family	41	Aug (past peak)
48	Blue Vervain	Verbena hastata	Verbena Family	39	Jul (past peak)
49	Arrow-Leaved Tearthumb	Persicaria sagittata	knotweed family	39	Sep (peak)
50	Purple Coneflower	Echinacea purpurea	Sunflowers, Daisies, Asters, and Allies	35	Jul (past peak)