60 wildflowers were recorded blooming in North Carolina in September in our iNaturalist sample; 22 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in September

Common Jewelweed

Partridge Pea

Asiatic dayflower

American hog-peanut

Purple Passionflower
Cardinal Flower

Pinesap
Trailing Fuzzy-Bean

Great Blue Lobelia

White Snakeroot
Blue Curls

Cutleaf Coneflower
All wildflowers blooming in North Carolina in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Common Jewelweed | Impatiens capensis | balsam family | 390 | Sep (peak) |
| 2 | Partridge Pea | Chamaecrista fasciculata | Legumes | 291 | Aug (past peak) |
| 3 | Asiatic dayflower | Commelina communis | Spiderworts | 232 | Sep (peak) |
| 4 | American hog-peanut | Amphicarpaea bracteata | Legumes | 226 | Sep (peak) |
| 5 | Purple Passionflower | Passiflora incarnata | Passionfruit Family | 202 | Aug (past peak) |
| 6 | Cardinal Flower | Lobelia cardinalis | bellflower family | 196 | Aug (past peak) |
| 7 | Pinesap | Monotropa hypopitys | heath family | 176 | Sep (peak) |
| 8 | Trailing Fuzzy-Bean | Strophostyles helvola | Legumes | 171 | Sep (peak) |
| 9 | Great Blue Lobelia | Lobelia siphilitica | bellflower family | 165 | Sep (peak) |
| 10 | White Snakeroot | Ageratina altissima | Sunflowers, Daisies, Asters, and Allies | 162 | Sep (peak) |
| 11 | Blue Curls | Trichostema dichotomum | Mint Family | 155 | Sep (peak) |
| 12 | Cutleaf Coneflower | Rudbeckia laciniata | Sunflowers, Daisies, Asters, and Allies | 142 | Aug (past peak) |
| 13 | Pale Jewelweed | Impatiens pallida | balsam family | 131 | Aug (past peak) |
| 14 | Wingstem | Verbesina alternifolia | Sunflowers, Daisies, Asters, and Allies | 130 | Sep (peak) |
| 15 | Low Smartweed | Persicaria longiseta | knotweed family | 125 | Sep (peak) |
| 16 | Downy Lobelia | Lobelia puberula | bellflower family | 114 | Sep (peak) |
| 17 | Common Sneezeweed | Helenium autumnale | Sunflowers, Daisies, Asters, and Allies | 101 | Sep (peak) |
| 18 | Perennial Wooly Bean | Strophostyles umbellata | Legumes | 85 | Aug (past peak) |
| 19 | Blue Mistflower | Conoclinium coelestinum | Sunflowers, Daisies, Asters, and Allies | 82 | Sep (peak) |
| 20 | Saltmarsh mallow | Kosteletzkya pentacarpos | Mallow and Hibiscus Family | 79 | Aug (past peak) |
| 21 | Arrow-Leaved Tearthumb | Persicaria sagittata | knotweed family | 75 | Sep (peak) |
| 22 | Common Selfheal | Prunella vulgaris | Mint Family | 74 | Jul (past peak) |
| 23 | Wild Carrot | Daucus carota | carrot family | 66 | Jul (past peak) |
| 24 | Red Clover | Trifolium pratense | Legumes | 65 | Jun (past peak) |
| 25 | Carolina horsenettle | Solanum carolinense | nightshade family | 63 | Jun (past peak) |
| 26 | Butterfly bush | Buddleja davidii | figwort family | 55 | Aug (past peak) |
| 27 | Citronella Horse Balm | Collinsonia canadensis | Mint Family | 53 | Aug (past peak) |
| 28 | Swamp Rose Mallow | Hibiscus moscheutos | Mallow and Hibiscus Family | 51 | Jul (past peak) |
| 29 | Chicory | Cichorium intybus | Sunflowers, Daisies, Asters, and Allies | 49 | Jul (past peak) |
| 30 | Largeleaf Pennywort | Hydrocotyle bonariensis | ivy family | 49 | Jul (past peak) |
| 31 | Yellow Passionflower | Passiflora lutea | Passionfruit Family | 43 | Jul (past peak) |
| 32 | Late Boneset | Eupatorium serotinum | Sunflowers, Daisies, Asters, and Allies | 43 | Sep (peak) |
| 33 | Ghost Pipe | Monotropa uniflora | heath family | 41 | Jul (past peak) |
| 34 | White Clover | Trifolium repens | Legumes | 38 | May (past peak) |
| 35 | Sweet Everlasting | Pseudognaphalium obtusifolium | Sunflowers, Daisies, Asters, and Allies | 38 | Sep (peak) |
| 36 | black-eyed Susan | Rudbeckia hirta | Sunflowers, Daisies, Asters, and Allies | 37 | Jun (past peak) |
| 37 | White Turtlehead | Chelone glabra | Plantain Family | 37 | Sep (peak) |
| 38 | Fall Phlox | Phlox paniculata | phlox family | 37 | Aug (past peak) |
| 39 | American burnweed | Erechtites hieraciifolius | Sunflowers, Daisies, Asters, and Allies | 36 | Sep (peak) |
| 40 | Pine lily | Lilium catesbaei | lily family | 36 | Aug (past peak) |
| 41 | Japanese honeysuckle | Lonicera japonica | honeysuckle family | 34 | May (past peak) |
| 42 | Panicled Hawkweed | Hieracium paniculatum | Sunflowers, Daisies, Asters, and Allies | 33 | Aug (past peak) |
| 43 | Bluestem Goldenrod | Solidago caesia | Sunflowers, Daisies, Asters, and Allies | 32 | Sep (peak) |
| 44 | White Wood Aster | Eurybia divaricata | Sunflowers, Daisies, Asters, and Allies | 32 | Sep (peak) |
| 45 | Indian tobacco | Lobelia inflata | bellflower family | 30 | Aug (past peak) |
| 46 | Tall Goldenrod | Solidago altissima | Sunflowers, Daisies, Asters, and Allies | 30 | Oct (rising) |
| 47 | Pickerelweed | Pontederia cordata | Pickerelweeds | 29 | Jun (past peak) |
| 48 | Flowering Spurge | Euphorbia corollata | Spurge Family | 29 | Aug (past peak) |
| 49 | Obedient Plant | Physostegia virginiana | Mint Family | 29 | Sep (peak) |
| 50 | Climbing Hempvine | Mikania scandens | Sunflowers, Daisies, Asters, and Allies | 29 | Sep (peak) |