Wildflowers Blooming in Maryland in September (60 Species)

60 wildflowers were recorded blooming in Maryland in September in our iNaturalist sample; 32 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

Top wildflowers in September

Common Jewelweed191 obs.

American hog-peanut180 obs.

Asiatic dayflower144 obs.

Late Boneset108 obs.

Autumn Clematis97 obs.

Pinesap92 obs.

Chicory91 obs.

Wingstem86 obs.

White Snakeroot81 obs.

Blue Mistflower75 obs.

Great Blue Lobelia64 obs.

Purple Passionflower53 obs.

All wildflowers blooming in Maryland in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	Common Jewelweed	Impatiens capensis	balsam family	191	Sep (peak)
2	American hog-peanut	Amphicarpaea bracteata	Legumes	180	Sep (peak)
3	Asiatic dayflower	Commelina communis	Spiderworts	144	Sep (peak)
4	Late Boneset	Eupatorium serotinum	Sunflowers, Daisies, Asters, and Allies	108	Sep (peak)
5	Autumn Clematis	Clematis terniflora	buttercup family	97	Sep (peak)
6	Pinesap	Monotropa hypopitys	heath family	92	Sep (peak)
7	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	91	Jun (past peak)
8	Wingstem	Verbesina alternifolia	Sunflowers, Daisies, Asters, and Allies	86	Sep (peak)
9	White Snakeroot	Ageratina altissima	Sunflowers, Daisies, Asters, and Allies	81	Sep (peak)
10	Blue Mistflower	Conoclinium coelestinum	Sunflowers, Daisies, Asters, and Allies	75	Sep (peak)
11	Great Blue Lobelia	Lobelia siphilitica	bellflower family	64	Sep (peak)
12	Purple Passionflower	Passiflora incarnata	Passionfruit Family	53	Sep (peak)
13	Cardinal Flower	Lobelia cardinalis	bellflower family	52	Aug (past peak)
14	Partridge Pea	Chamaecrista fasciculata	Legumes	52	Aug (past peak)
15	Blue Curls	Trichostema dichotomum	Mint Family	48	Sep (peak)
16	Field Thistle	Cirsium discolor	Sunflowers, Daisies, Asters, and Allies	45	Sep (peak)
17	White Morning-glory	Ipomoea lacunosa	bindweed family	44	Sep (peak)
18	White Clover	Trifolium repens	Legumes	43	May (past peak)
19	Flat-Topped Goldenrod	Euthamia graminifolia	Sunflowers, Daisies, Asters, and Allies	43	Sep (peak)
20	Bluestem Goldenrod	Solidago caesia	Sunflowers, Daisies, Asters, and Allies	38	Sep (peak)
21	Groundsel Tree	Baccharis halimifolia	Sunflowers, Daisies, Asters, and Allies	37	Sep (peak)
22	Red Clover	Trifolium pratense	Legumes	35	May (past peak)
23	Japanese honeysuckle	Lonicera japonica	honeysuckle family	35	May (past peak)
24	White Turtlehead	Chelone glabra	Plantain Family	33	Sep (peak)
25	American burnweed	Erechtites hieraciifolius	Sunflowers, Daisies, Asters, and Allies	32	Sep (peak)
26	Panicled Hawkweed	Hieracium paniculatum	Sunflowers, Daisies, Asters, and Allies	32	Aug (past peak)
27	Porcelain Berry	Ampelopsis glandulosa	Grape Family	32	Aug (past peak)
28	Pickerelweed	Pontederia cordata	Pickerelweeds	31	Jul (past peak)
29	Carolina horsenettle	Solanum carolinense	nightshade family	31	Jun (past peak)
30	Rosepink	Sabatia angularis	gentian family	30	Jul (past peak)
31	American pokeweed	Phytolacca americana	Pokeweed Family	29	Aug (past peak)
32	Marsh Fleabane	Pluchea odorata	Sunflowers, Daisies, Asters, and Allies	29	Sep (peak)
33	Tall Goldenrod	Solidago altissima	Sunflowers, Daisies, Asters, and Allies	29	Sep (peak)
34	Pale Jewelweed	Impatiens pallida	balsam family	28	Sep (peak)
35	False Daisy	Eclipta prostrata	Sunflowers, Daisies, Asters, and Allies	28	Sep (peak)
36	Downy Lobelia	Lobelia puberula	bellflower family	28	Sep (peak)
37	Common Hibiscus	Hibiscus syriacus	Mallow and Hibiscus Family	28	Aug (past peak)
38	Cutleaf Coneflower	Rudbeckia laciniata	Sunflowers, Daisies, Asters, and Allies	27	Aug (past peak)
39	Climbing Hempvine	Mikania scandens	Sunflowers, Daisies, Asters, and Allies	27	Sep (peak)
40	Yellow Passionflower	Passiflora lutea	Passionfruit Family	26	Aug (past peak)
41	Jimsonweed	Datura stramonium	nightshade family	26	Sep (peak)
42	Trailing Fuzzy-Bean	Strophostyles helvola	Legumes	26	Sep (peak)
43	Common Boneset	Eupatorium perfoliatum	Sunflowers, Daisies, Asters, and Allies	25	Sep (peak)
44	White Wood Aster	Eurybia divaricata	Sunflowers, Daisies, Asters, and Allies	24	Sep (peak)
45	Citronella Horse Balm	Collinsonia canadensis	Mint Family	24	Sep (peak)
46	Wild Carrot	Daucus carota	carrot family	23	Jul (past peak)
47	New England aster	Symphyotrichum novae-angliae	Sunflowers, Daisies, Asters, and Allies	23	Sep (peak)
48	Common Evening-Primrose	Oenothera biennis	evening primrose family	22	Sep (peak)
49	American trumpet vine	Campsis radicans	bignonia family	22	Jun (past peak)
50	Low Smartweed	Persicaria longiseta	knotweed family	22	Oct (rising)