Wildflowers Blooming in Indiana in September (60 Species)

60 wildflowers were recorded blooming in Indiana in September in our iNaturalist sample; 23 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

White Snakeroot259 obs.

Great Blue Lobelia205 obs.

Common Jewelweed187 obs.

Wingstem101 obs.

New England aster100 obs.

brown-eyed Susan77 obs.

Blue Mistflower72 obs.

Pale Jewelweed64 obs.

Bluestem Goldenrod61 obs.

Asiatic dayflower58 obs.

Common Boneset45 obs.

Common Sneezeweed41 obs.

All wildflowers blooming in Indiana in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	White Snakeroot	Ageratina altissima	Sunflowers, Daisies, Asters, and Allies	259	Sep (peak)
2	Great Blue Lobelia	Lobelia siphilitica	bellflower family	205	Sep (peak)
3	Common Jewelweed	Impatiens capensis	balsam family	187	Sep (peak)
4	Wingstem	Verbesina alternifolia	Sunflowers, Daisies, Asters, and Allies	101	Sep (peak)
5	New England aster	Symphyotrichum novae-angliae	Sunflowers, Daisies, Asters, and Allies	100	Sep (peak)
6	brown-eyed Susan	Rudbeckia triloba	Sunflowers, Daisies, Asters, and Allies	77	Aug (past peak)
7	Blue Mistflower	Conoclinium coelestinum	Sunflowers, Daisies, Asters, and Allies	72	Sep (peak)
8	Pale Jewelweed	Impatiens pallida	balsam family	64	Sep (peak)
9	Bluestem Goldenrod	Solidago caesia	Sunflowers, Daisies, Asters, and Allies	61	Sep (peak)
10	Asiatic dayflower	Commelina communis	Spiderworts	58	Sep (peak)
11	Common Boneset	Eupatorium perfoliatum	Sunflowers, Daisies, Asters, and Allies	45	Aug (past peak)
12	Common Sneezeweed	Helenium autumnale	Sunflowers, Daisies, Asters, and Allies	41	Sep (peak)
13	Cardinal Flower	Lobelia cardinalis	bellflower family	40	Aug (past peak)
14	American hog-peanut	Amphicarpaea bracteata	Legumes	40	Aug (past peak)
15	Frost Aster	Symphyotrichum pilosum	Sunflowers, Daisies, Asters, and Allies	40	Sep (peak)
16	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	33	Jul (past peak)
17	Cutleaf Coneflower	Rudbeckia laciniata	Sunflowers, Daisies, Asters, and Allies	31	Aug (past peak)
18	False Sunflower	Heliopsis helianthoides	Sunflowers, Daisies, Asters, and Allies	31	Jul (past peak)
19	Citronella Horse Balm	Collinsonia canadensis	Mint Family	31	Aug (past peak)
20	Fall Phlox	Phlox paniculata	phlox family	30	Oct (rising)
21	Calico Aster	Symphyotrichum lateriflorum	Sunflowers, Daisies, Asters, and Allies	30	Sep (peak)
22	Late Boneset	Eupatorium serotinum	Sunflowers, Daisies, Asters, and Allies	29	Sep (peak)
23	Autumn Clematis	Clematis terniflora	buttercup family	27	Sep (peak)
24	Low Smartweed	Persicaria longiseta	knotweed family	27	Sep (peak)
25	Wild Carrot	Daucus carota	carrot family	26	Jul (past peak)
26	Tall Bellflower	Campanulastrum americanum	bellflower family	25	Jul (past peak)
27	Broad-Leaved Goldenrod	Solidago flexicaulis	Sunflowers, Daisies, Asters, and Allies	24	Sep (peak)
28	White Turtlehead	Chelone glabra	Plantain Family	23	Sep (peak)
29	fen grass of Parnassus	Parnassia glauca	staff-vine family	21	Sep (peak)
30	Common Blue Wood Aster	Symphyotrichum cordifolium	Sunflowers, Daisies, Asters, and Allies	21	Oct (rising)
31	Purple Coneflower	Echinacea purpurea	Sunflowers, Daisies, Asters, and Allies	20	Jul (past peak)
32	Japanese honeysuckle	Lonicera japonica	honeysuckle family	20	Jun (past peak)
33	Obedient Plant	Physostegia virginiana	Mint Family	20	Aug (past peak)
34	American pokeweed	Phytolacca americana	Pokeweed Family	19	Aug (past peak)
35	Red Clover	Trifolium pratense	Legumes	18	Jun (past peak)
36	Swamp Rose Mallow	Hibiscus moscheutos	Mallow and Hibiscus Family	18	Aug (past peak)
37	Common Hibiscus	Hibiscus syriacus	Mallow and Hibiscus Family	18	Sep (peak)
38	Bird's-Foot Trefoil	Lotus corniculatus	Legumes	17	Jun (past peak)
39	Purple Passionflower	Passiflora incarnata	Passionfruit Family	17	Aug (past peak)
40	Lanceleaf Frogfruit	Phyla lanceolata	Verbena Family	17	Aug (past peak)
41	Flower-Of-An-Hour	Hibiscus trionum	Mallow and Hibiscus Family	17	Sep (peak)
42	Pinkweed	Persicaria pensylvanica	knotweed family	17	Aug (past peak)
43	Tall Goldenrod	Solidago altissima	Sunflowers, Daisies, Asters, and Allies	17	Sep (peak)
44	Creeping Thistle	Cirsium arvense	Sunflowers, Daisies, Asters, and Allies	16	Jul (past peak)
45	Purple Loosestrife	Lythrum salicaria	lythrum family	16	Aug (past peak)
46	Common Evening-Primrose	Oenothera biennis	evening primrose family	16	Aug (past peak)
47	Pickerelweed	Pontederia cordata	Pickerelweeds	15	Jul (past peak)
48	American burnweed	Erechtites hieraciifolius	Sunflowers, Daisies, Asters, and Allies	15	Sep (peak)
49	Nodding Beggarticks	Bidens cernua	Sunflowers, Daisies, Asters, and Allies	14	Sep (peak)
50	Giant Ragweed	Ambrosia trifida	Sunflowers, Daisies, Asters, and Allies	13	Aug (past peak)