60 wildflowers were recorded blooming in Alabama in August in our iNaturalist sample; 11 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in August

Purple Passionflower
Butterfly Pea

Pineland Hibiscus
Cardinal Flower

Crane-Fly Orchid
American groundnut

Wild Potato Vine

Partridge Pea

St. Andrew's cross

Yellow Passionflower

Common Jewelweed

Blue Mistflower
All wildflowers blooming in Alabama in August
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Purple Passionflower | Passiflora incarnata | Passionfruit Family | 149 | Aug (peak) |
| 2 | Butterfly Pea | Centrosema virginianum | Legumes | 78 | Aug (peak) |
| 3 | Pineland Hibiscus | Sabdariffa aculeata | Mallow and Hibiscus Family | 69 | Jun (past peak) |
| 4 | Cardinal Flower | Lobelia cardinalis | bellflower family | 65 | Sep (rising) |
| 5 | Crane-Fly Orchid | Tipularia discolor | Orchids | 56 | Aug (peak) |
| 6 | American groundnut | Apios americana | Legumes | 42 | Aug (peak) |
| 7 | Wild Potato Vine | Ipomoea pandurata | bindweed family | 38 | Jul (past peak) |
| 8 | Partridge Pea | Chamaecrista fasciculata | Legumes | 37 | Aug (peak) |
| 9 | St. Andrew's cross | Hypericum hypericoides | St. John's wort family | 32 | Aug (peak) |
| 10 | Yellow Passionflower | Passiflora lutea | Passionfruit Family | 31 | Jun (past peak) |
| 11 | Common Jewelweed | Impatiens capensis | balsam family | 27 | Sep (rising) |
| 12 | Blue Mistflower | Conoclinium coelestinum | Sunflowers, Daisies, Asters, and Allies | 27 | Sep (rising) |
| 13 | Asiatic dayflower | Commelina communis | Spiderworts | 25 | Sep (rising) |
| 14 | Sharpwing Monkeyflower | Mimulus alatus | lopseed family | 25 | Aug (peak) |
| 15 | Autumn Clematis | Clematis terniflora | buttercup family | 20 | Aug (peak) |
| 16 | Pine lily | Lilium catesbaei | lily family | 20 | Sep (rising) |
| 17 | Perennial Wooly Bean | Strophostyles umbellata | Legumes | 19 | Sep (rising) |
| 18 | Trailing Fuzzy-Bean | Strophostyles helvola | Legumes | 19 | Sep (rising) |
| 19 | brown-eyed Susan | Rudbeckia triloba | Sunflowers, Daisies, Asters, and Allies | 17 | Jul (past peak) |
| 20 | Tall Bellflower | Campanulastrum americanum | bellflower family | 16 | Jul (past peak) |
| 21 | American trumpet vine | Campsis radicans | bignonia family | 15 | Jun (past peak) |
| 22 | White beggarticks | Bidens alba | Sunflowers, Daisies, Asters, and Allies | 14 | Oct (rising) |
| 23 | Bitterweed | Helenium amarum | Sunflowers, Daisies, Asters, and Allies | 13 | Sep (rising) |
| 24 | Pigeonwings | Clitoria mariana | Legumes | 13 | Jul (past peak) |
| 25 | Climbing Hempvine | Mikania scandens | Sunflowers, Daisies, Asters, and Allies | 13 | Sep (rising) |
| 26 | Frostweed | Verbesina virginica | Sunflowers, Daisies, Asters, and Allies | 13 | Sep (rising) |
| 27 | Orange Milkwort | Senega lutea | milkworts | 13 | Apr (past peak) |
| 28 | Butterfly Milkweed | Asclepias tuberosa | Dogbane Family | 12 | May (past peak) |
| 29 | Buttonbush | Cephalanthus occidentalis | madder family | 12 | Jun (past peak) |
| 30 | Buttonweed | Diodia virginiana | madder family | 12 | Sep (rising) |
| 31 | Saltmarsh mallow | Kosteletzkya pentacarpos | Mallow and Hibiscus Family | 11 | Jul (past peak) |
| 32 | Camphorweed | Heterotheca subaxillaris | Sunflowers, Daisies, Asters, and Allies | 10 | Oct (rising) |
| 33 | Largeleaf Pennywort | Hydrocotyle bonariensis | ivy family | 10 | Jun (past peak) |
| 34 | Firewheel | Gaillardia pulchella | Sunflowers, Daisies, Asters, and Allies | 9 | Jun (past peak) |
| 35 | American hog-peanut | Amphicarpaea bracteata | Legumes | 9 | Sep (rising) |
| 36 | Cutleaf Coneflower | Rudbeckia laciniata | Sunflowers, Daisies, Asters, and Allies | 9 | Aug (peak) |
| 37 | White Morning-glory | Ipomoea lacunosa | bindweed family | 9 | Sep (rising) |
| 38 | Pickerelweed | Pontederia cordata | Pickerelweeds | 8 | Jun (past peak) |
| 39 | Carolina horsenettle | Solanum carolinense | nightshade family | 8 | May (past peak) |
| 40 | Whitemouth Dayflower | Commelina erecta | Spiderworts | 8 | Jun (past peak) |
| 41 | Flowering Spurge | Euphorbia corollata | Spurge Family | 8 | Aug (peak) |
| 42 | American jumpseed | Persicaria virginiana | knotweed family | 8 | Aug (peak) |
| 43 | Spotted Horsemint | Monarda punctata | Mint Family | 7 | Sep (rising) |
| 44 | Whorled Milkweed | Asclepias verticillata | Dogbane Family | 7 | Jul (past peak) |
| 45 | Shining Sumac | Rhus copallinum | Cashew Family | 7 | Jul (past peak) |
| 46 | Woodland Coreopsis | Anacis major | Sunflowers, Daisies, Asters, and Allies | 7 | Jun (past peak) |
| 47 | American white waterlily | Nymphaea odorata | Waterlily Family | 6 | Apr (past peak) |
| 48 | Late Boneset | Eupatorium serotinum | Sunflowers, Daisies, Asters, and Allies | 6 | Sep (rising) |
| 49 | False Daisy | Eclipta prostrata | Sunflowers, Daisies, Asters, and Allies | 6 | Sep (rising) |
| 50 | American black elderberry | Sambucus canadensis | elder family | 6 | Jun (past peak) |