Wildflowers Blooming in Ohio in August (60 Species)

60 wildflowers were recorded blooming in Ohio in August in our iNaturalist sample; 17 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 August

brown-eyed Susan505 obs.

Swamp Rose Mallow482 obs.

Great Blue Lobelia299 obs.

Common Jewelweed294 obs.

American hog-peanut247 obs.

Cutleaf Coneflower231 obs.

Allegheny monkeyflower229 obs.

Wingstem227 obs.

American groundnut199 obs.

black-eyed Susan196 obs.

Field Thistle160 obs.

Cardinal Flower156 obs.

All wildflowers blooming in Ohio in August

#	Species	Scientific name	Family	Obs.	Peak in state
1	brown-eyed Susan	Rudbeckia triloba	Sunflowers, Daisies, Asters, and Allies	505	Sep (rising)
2	Swamp Rose Mallow	Hibiscus moscheutos	Mallow and Hibiscus Family	482	Aug (peak)
3	Great Blue Lobelia	Lobelia siphilitica	bellflower family	299	Sep (rising)
4	Common Jewelweed	Impatiens capensis	balsam family	294	Sep (rising)
5	American hog-peanut	Amphicarpaea bracteata	Legumes	247	Aug (peak)
6	Cutleaf Coneflower	Rudbeckia laciniata	Sunflowers, Daisies, Asters, and Allies	231	Aug (peak)
7	Allegheny monkeyflower	Mimulus ringens	lopseed family	229	Jul (past peak)
8	Wingstem	Verbesina alternifolia	Sunflowers, Daisies, Asters, and Allies	227	Sep (rising)
9	American groundnut	Apios americana	Legumes	199	Aug (peak)
10	black-eyed Susan	Rudbeckia hirta	Sunflowers, Daisies, Asters, and Allies	196	Jul (past peak)
11	Field Thistle	Cirsium discolor	Sunflowers, Daisies, Asters, and Allies	160	Sep (rising)
12	Cardinal Flower	Lobelia cardinalis	bellflower family	156	Aug (peak)
13	Blue Mistflower	Conoclinium coelestinum	Sunflowers, Daisies, Asters, and Allies	154	Sep (rising)
14	Bull Thistle	Cirsium vulgare	Sunflowers, Daisies, Asters, and Allies	141	Aug (peak)
15	Common Hibiscus	Hibiscus syriacus	Mallow and Hibiscus Family	138	Aug (peak)
16	Partridge Pea	Chamaecrista fasciculata	Legumes	138	Aug (peak)
17	Wild Carrot	Daucus carota	carrot family	137	Jul (past peak)
18	Pale Jewelweed	Impatiens pallida	balsam family	133	Sep (rising)
19	Purple Loosestrife	Lythrum salicaria	lythrum family	129	Aug (peak)
20	American jumpseed	Persicaria virginiana	knotweed family	128	Aug (peak)
21	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	125	Sep (rising)
22	Sharpwing Monkeyflower	Mimulus alatus	lopseed family	124	Jul (past peak)
23	False Sunflower	Heliopsis helianthoides	Sunflowers, Daisies, Asters, and Allies	118	Jul (past peak)
24	Blue Vervain	Verbena hastata	Verbena Family	114	Jul (past peak)
25	Common Boneset	Eupatorium perfoliatum	Sunflowers, Daisies, Asters, and Allies	107	Aug (peak)
26	Pickerelweed	Pontederia cordata	Pickerelweeds	103	Jul (past peak)
27	White Snakeroot	Ageratina altissima	Sunflowers, Daisies, Asters, and Allies	101	Sep (rising)
28	Swamp Milkweed	Asclepias incarnata	Dogbane Family	96	Jul (past peak)
29	Indian tobacco	Lobelia inflata	bellflower family	90	Aug (peak)
30	Wild Bergamot	Monarda fistulosa	Mint Family	88	Jul (past peak)
31	Asiatic dayflower	Commelina communis	Spiderworts	87	Sep (rising)
32	Tall Bellflower	Campanulastrum americanum	bellflower family	87	Jul (past peak)
33	Common Selfheal	Prunella vulgaris	Mint Family	84	Jul (past peak)
34	Flower-Of-An-Hour	Hibiscus trionum	Mallow and Hibiscus Family	84	Sep (rising)
35	Purple Passionflower	Passiflora incarnata	Passionfruit Family	80	Aug (peak)
36	Common Sneezeweed	Helenium autumnale	Sunflowers, Daisies, Asters, and Allies	78	Sep (rising)
37	Wild Potato Vine	Ipomoea pandurata	bindweed family	75	Jul (past peak)
38	Purple Coneflower	Echinacea purpurea	Sunflowers, Daisies, Asters, and Allies	71	Jul (past peak)
39	Creeping Thistle	Cirsium arvense	Sunflowers, Daisies, Asters, and Allies	68	Jun (past peak)
40	Bird's-Foot Trefoil	Lotus corniculatus	Legumes	67	Jun (past peak)
41	Ghost Pipe	Monotropa uniflora	heath family	66	Jul (past peak)
42	Grey-Headed Coneflower	Ratibida pinnata	Sunflowers, Daisies, Asters, and Allies	64	Jul (past peak)
43	Red Clover	Trifolium pratense	Legumes	62	Sep (rising)
44	Virgin's-Bower	Clematis virginiana	buttercup family	60	Aug (peak)
45	Fall Phlox	Phlox paniculata	phlox family	59	Sep (rising)
46	Eastern Black Nightshade	Solanum emulans	nightshade family	57	Aug (peak)
47	Obedient Plant	Physostegia virginiana	Mint Family	54	Aug (peak)
48	Whorled Milkweed	Asclepias verticillata	Dogbane Family	53	Jul (past peak)
49	Broadleaf Arrowhead	Sagittaria latifolia	Water-Plantain family	52	Aug (peak)
50	Carolina horsenettle	Solanum carolinense	nightshade family	51	Jul (past peak)