60 wildflowers were recorded blooming in South Carolina in September in our iNaturalist sample; 21 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in September
Blue Curls
Cardinal Flower

American hog-peanut

Blue Mistflower
Butterfly Pea
American groundnut

Common Jewelweed

Asiatic dayflower

Purple Passionflower

Largeleaf Pennywort

Perennial Wooly Bean

Yellow Passionflower
All wildflowers blooming in South Carolina in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Blue Curls | Trichostema dichotomum | Mint Family | 47 | Sep (peak) |
| 2 | Cardinal Flower | Lobelia cardinalis | bellflower family | 44 | Sep (peak) |
| 3 | American hog-peanut | Amphicarpaea bracteata | Legumes | 43 | Sep (peak) |
| 4 | Blue Mistflower | Conoclinium coelestinum | Sunflowers, Daisies, Asters, and Allies | 43 | Oct (rising) |
| 5 | Butterfly Pea | Centrosema virginianum | Legumes | 42 | Aug (past peak) |
| 6 | American groundnut | Apios americana | Legumes | 36 | Aug (past peak) |
| 7 | Common Jewelweed | Impatiens capensis | balsam family | 31 | Sep (peak) |
| 8 | Asiatic dayflower | Commelina communis | Spiderworts | 31 | Aug (past peak) |
| 9 | Purple Passionflower | Passiflora incarnata | Passionfruit Family | 28 | May (past peak) |
| 10 | Largeleaf Pennywort | Hydrocotyle bonariensis | ivy family | 24 | May (past peak) |
| 11 | Perennial Wooly Bean | Strophostyles umbellata | Legumes | 17 | Sep (peak) |
| 12 | Yellow Passionflower | Passiflora lutea | Passionfruit Family | 15 | Jul (past peak) |
| 13 | Trailing Fuzzy-Bean | Strophostyles helvola | Legumes | 15 | Sep (peak) |
| 14 | Carolina horsenettle | Solanum carolinense | nightshade family | 14 | May (past peak) |
| 15 | Pinesap | Monotropa hypopitys | heath family | 14 | Sep (peak) |
| 16 | Autumn Clematis | Clematis terniflora | buttercup family | 13 | Aug (past peak) |
| 17 | Climbing Hempvine | Mikania scandens | Sunflowers, Daisies, Asters, and Allies | 12 | Sep (peak) |
| 18 | Pickerelweed | Pontederia cordata | Pickerelweeds | 11 | Jun (past peak) |
| 19 | Spotted Horsemint | Monarda punctata | Mint Family | 11 | Sep (peak) |
| 20 | Saltmarsh mallow | Kosteletzkya pentacarpos | Mallow and Hibiscus Family | 11 | Aug (past peak) |
| 21 | American trumpet vine | Campsis radicans | bignonia family | 10 | Jun (past peak) |
| 22 | Tievine | Ipomoea cordatotriloba | bindweed family | 10 | Sep (peak) |
| 23 | Pine lily | Lilium catesbaei | lily family | 10 | Aug (past peak) |
| 24 | Pineland Hibiscus | Sabdariffa aculeata | Mallow and Hibiscus Family | 10 | Aug (past peak) |
| 25 | Japanese honeysuckle | Lonicera japonica | honeysuckle family | 9 | Apr (past peak) |
| 26 | White beggarticks | Bidens alba | Sunflowers, Daisies, Asters, and Allies | 9 | Sep (peak) |
| 27 | Late Boneset | Eupatorium serotinum | Sunflowers, Daisies, Asters, and Allies | 8 | Sep (peak) |
| 28 | Camphorweed | Heterotheca subaxillaris | Sunflowers, Daisies, Asters, and Allies | 7 | Sep (peak) |
| 29 | Partridge Pea | Chamaecrista fasciculata | Legumes | 7 | Aug (past peak) |
| 30 | Whitemouth Dayflower | Commelina erecta | Spiderworts | 6 | Jun (past peak) |
| 31 | Turkey Tangle Frogfruit | Phyla nodiflora | Verbena Family | 6 | Aug (past peak) |
| 32 | Cutleaf Coneflower | Rudbeckia laciniata | Sunflowers, Daisies, Asters, and Allies | 6 | Sep (peak) |
| 33 | Buttonweed | Diodia virginiana | madder family | 6 | Aug (past peak) |
| 34 | Sweet Everlasting | Pseudognaphalium obtusifolium | Sunflowers, Daisies, Asters, and Allies | 6 | Sep (peak) |
| 35 | Broadleaf Arrowhead | Sagittaria latifolia | Water-Plantain family | 5 | Sep (peak) |
| 36 | American white waterlily | Nymphaea odorata | Waterlily Family | 5 | Apr (past peak) |
| 37 | Firewheel | Gaillardia pulchella | Sunflowers, Daisies, Asters, and Allies | 5 | Aug (past peak) |
| 38 | black-eyed Susan | Rudbeckia hirta | Sunflowers, Daisies, Asters, and Allies | 5 | Jun (past peak) |
| 39 | Bitterweed | Helenium amarum | Sunflowers, Daisies, Asters, and Allies | 5 | Aug (past peak) |
| 40 | Tall Goldenrod | Solidago altissima | Sunflowers, Daisies, Asters, and Allies | 5 | Sep (peak) |
| 41 | Frostweed | Verbesina virginica | Sunflowers, Daisies, Asters, and Allies | 5 | Sep (peak) |
| 42 | Turk's cap | Malvaviscus arboreus | Mallow and Hibiscus Family | 5 | Sep (peak) |
| 43 | Ghost Pipe | Monotropa uniflora | heath family | 4 | Oct (rising) |
| 44 | Buttonbush | Cephalanthus occidentalis | madder family | 4 | Jun (past peak) |
| 45 | Marsh Fleabane | Pluchea odorata | Sunflowers, Daisies, Asters, and Allies | 4 | Sep (peak) |
| 46 | Cross Vine | Bignonia capreolata | bignonia family | 4 | Apr (past peak) |
| 47 | Partridgeberry | Mitchella repens | madder family | 4 | Apr (past peak) |
| 48 | Wild Potato Vine | Ipomoea pandurata | bindweed family | 4 | Jul (past peak) |
| 49 | Daisy Fleabane | Erigeron strigosus | Sunflowers, Daisies, Asters, and Allies | 3 | Jun (past peak) |
| 50 | White Turtlehead | Chelone glabra | Plantain Family | 3 | Sep (peak) |