Wildflowers Blooming in Delaware in August (60 Species)

60 wildflowers were recorded blooming in Delaware in August in our iNaturalist sample; 20 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

Top wildflowers in August

Cardinal Flower34 obs.

Common Jewelweed32 obs.

Swamp Rose Mallow29 obs.

Chicory20 obs.

black-eyed Susan20 obs.

Purple Loosestrife19 obs.

Purple Passionflower18 obs.

Sweet Pepperbush16 obs.

Great Blue Lobelia16 obs.

Pickerelweed15 obs.

Wild Carrot15 obs.

Butterfly Milkweed14 obs.

All wildflowers blooming in Delaware in August

#	Species	Scientific name	Family	Obs.	Peak in state
1	Cardinal Flower	Lobelia cardinalis	bellflower family	34	Aug (peak)
2	Common Jewelweed	Impatiens capensis	balsam family	32	Sep (rising)
3	Swamp Rose Mallow	Hibiscus moscheutos	Mallow and Hibiscus Family	29	Aug (peak)
4	Chicory	Cichorium intybus	Sunflowers, Daisies, Asters, and Allies	20	Jul (past peak)
5	black-eyed Susan	Rudbeckia hirta	Sunflowers, Daisies, Asters, and Allies	20	Jul (past peak)
6	Purple Loosestrife	Lythrum salicaria	lythrum family	19	Jul (past peak)
7	Purple Passionflower	Passiflora incarnata	Passionfruit Family	18	Aug (peak)
8	Sweet Pepperbush	Clethra alnifolia	clethra family	16	Jul (past peak)
9	Great Blue Lobelia	Lobelia siphilitica	bellflower family	16	Sep (rising)
10	Pickerelweed	Pontederia cordata	Pickerelweeds	15	Jun (past peak)
11	Wild Carrot	Daucus carota	carrot family	15	Jul (past peak)
12	Butterfly Milkweed	Asclepias tuberosa	Dogbane Family	14	Jun (past peak)
13	Crane-Fly Orchid	Tipularia discolor	Orchids	13	Aug (peak)
14	Saltmarsh mallow	Kosteletzkya pentacarpos	Mallow and Hibiscus Family	13	Aug (peak)
15	Indian tobacco	Lobelia inflata	bellflower family	12	Jul (past peak)
16	American trumpet vine	Campsis radicans	bignonia family	12	Jul (past peak)
17	Swamp Milkweed	Asclepias incarnata	Dogbane Family	12	Jul (past peak)
18	Porcelain Berry	Ampelopsis glandulosa	Grape Family	11	Jul (past peak)
19	Asiatic dayflower	Commelina communis	Spiderworts	10	Sep (rising)
20	Flower-Of-An-Hour	Hibiscus trionum	Mallow and Hibiscus Family	10	Aug (peak)
21	Partridge Pea	Chamaecrista fasciculata	Legumes	10	Aug (peak)
22	brown-eyed Susan	Rudbeckia triloba	Sunflowers, Daisies, Asters, and Allies	10	Aug (peak)
23	Autumn Clematis	Clematis terniflora	buttercup family	9	Sep (rising)
24	Cutleaf Coneflower	Rudbeckia laciniata	Sunflowers, Daisies, Asters, and Allies	9	Aug (peak)
25	American groundnut	Apios americana	Legumes	9	Aug (peak)
26	Shining Sumac	Rhus copallinum	Cashew Family	9	Aug (peak)
27	Common Selfheal	Prunella vulgaris	Mint Family	8	Jul (past peak)
28	Carolina horsenettle	Solanum carolinense	nightshade family	7	Jun (past peak)
29	White Clover	Trifolium repens	Legumes	7	May (past peak)
30	Jimsonweed	Datura stramonium	nightshade family	7	Aug (peak)
31	Fall Phlox	Phlox paniculata	phlox family	7	Aug (peak)
32	Perennial Wooly Bean	Strophostyles umbellata	Legumes	7	Aug (peak)
33	American pokeweed	Phytolacca americana	Pokeweed Family	6	Jul (past peak)
34	Red Clover	Trifolium pratense	Legumes	6	May (past peak)
35	Japanese honeysuckle	Lonicera japonica	honeysuckle family	6	May (past peak)
36	American hog-peanut	Amphicarpaea bracteata	Legumes	6	Sep (rising)
37	Spotted Horsemint	Monarda punctata	Mint Family	6	Aug (peak)
38	Pale Jewelweed	Impatiens pallida	balsam family	5	Sep (rising)
39	Blue Mistflower	Conoclinium coelestinum	Sunflowers, Daisies, Asters, and Allies	5	Sep (rising)
40	Purple Crownvetch	Securigera varia	Legumes	5	Jun (past peak)
41	Early Goldenrod	Solidago juncea	Sunflowers, Daisies, Asters, and Allies	5	Aug (peak)
42	Trailing Fuzzy-Bean	Strophostyles helvola	Legumes	5	Sep (rising)
43	Bird's-Foot Trefoil	Lotus corniculatus	Legumes	4	Jun (past peak)
44	Buttonbush	Cephalanthus occidentalis	madder family	4	Jul (past peak)
45	Bull Thistle	Cirsium vulgare	Sunflowers, Daisies, Asters, and Allies	4	Aug (peak)
46	Manyflower Marshpennywort	Hydrocotyle umbellata	ivy family	4	Jul (past peak)
47	Marsh Fleabane	Pluchea odorata	Sunflowers, Daisies, Asters, and Allies	4	Aug (peak)
48	Field Thistle	Cirsium discolor	Sunflowers, Daisies, Asters, and Allies	4	Aug (peak)
49	Allegheny monkeyflower	Mimulus ringens	lopseed family	4	Jul (past peak)
50	Spotted Knapweed	Centaurea stoebe	Sunflowers, Daisies, Asters, and Allies	4	Aug (peak)