60 wildflowers were recorded blooming in South Carolina in May in our iNaturalist sample; 25 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in May

Partridgeberry

Striped Wintergreen

Purple Passionflower

Tuberous Grasspink

Chinese privet

Butterfly Milkweed

Largeleaf Pennywort
American persimmon

Redring Milkweed

Carolina horsenettle

Spurge Nettle

Lizard's Tail
All wildflowers blooming in South Carolina in May
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Partridgeberry | Mitchella repens | madder family | 179 | Apr (past peak) |
| 2 | Striped Wintergreen | Chimaphila maculata | heath family | 158 | May (peak) |
| 3 | Purple Passionflower | Passiflora incarnata | Passionfruit Family | 126 | May (peak) |
| 4 | Tuberous Grasspink | Calopogon tuberosus | Orchids | 85 | May (peak) |
| 5 | Chinese privet | Ligustrum sinense | olive family | 76 | Apr (past peak) |
| 6 | Butterfly Milkweed | Asclepias tuberosa | Dogbane Family | 65 | May (peak) |
| 7 | Largeleaf Pennywort | Hydrocotyle bonariensis | ivy family | 60 | May (peak) |
| 8 | American persimmon | Diospyros virginiana | persimmon family | 59 | May (peak) |
| 9 | Redring Milkweed | Asclepias variegata | Dogbane Family | 57 | May (peak) |
| 10 | Carolina horsenettle | Solanum carolinense | nightshade family | 54 | May (peak) |
| 11 | Spurge Nettle | Cnidoscolus stimulosus | Spurge Family | 50 | May (peak) |
| 12 | Lizard's Tail | Saururus cernuus | lizard's tail family | 45 | May (peak) |
| 13 | Mountain Laurel | Kalmia latifolia | heath family | 44 | Apr (past peak) |
| 14 | Strawberry Bush | Euonymus americanus | staff-vine family | 37 | Apr (past peak) |
| 15 | Japanese honeysuckle | Lonicera japonica | honeysuckle family | 36 | Apr (past peak) |
| 16 | Bristle Thistle | Cirsium horridulum | Sunflowers, Daisies, Asters, and Allies | 36 | Apr (past peak) |
| 17 | Bashful Wakerobin | Trillium catesbaei | Herb-Paris, False Hellebores, Trilliums and allies | 33 | Apr (past peak) |
| 18 | Blue Pigroot | Sisyrinchium micranthum | iris family | 32 | Apr (past peak) |
| 19 | Orange Milkwort | Senega lutea | milkworts | 27 | May (peak) |
| 20 | American tuliptree | Liriodendron tulipifera | magnolia family | 26 | Apr (past peak) |
| 21 | clasping Venus's looking glass | Triodanis perfoliata | bellflower family | 26 | Apr (past peak) |
| 22 | American trumpet vine | Campsis radicans | bignonia family | 24 | Jun (rising) |
| 23 | White Clover | Trifolium repens | Legumes | 23 | Apr (past peak) |
| 24 | Eastern Coral Bean | Erythrina herbacea | Legumes | 23 | May (peak) |
| 25 | Fire Pink | Silene virginica | pink family | 22 | May (peak) |
| 26 | Goat's Rue | Tephrosia virginiana | Legumes | 21 | May (peak) |
| 27 | Aquatic Milkweed | Asclepias perennis | Dogbane Family | 21 | May (peak) |
| 28 | Helmet skullcap | Scutellaria integrifolia | Mint Family | 20 | May (peak) |
| 29 | New Jersey tea | Ceanothus americanus | buckthorn family | 20 | May (peak) |
| 30 | Pink Lady's Slipper | Cypripedium acaule | Orchids | 19 | May (peak) |
| 31 | American black elderberry | Sambucus canadensis | elder family | 18 | May (peak) |
| 32 | Carolina ruellia | Ruellia caroliniensis | Acanthus Family | 17 | Jun (rising) |
| 33 | Pickerelweed | Pontederia cordata | Pickerelweeds | 15 | Jun (rising) |
| 34 | Galax | Galax urceolata | diapensia family | 15 | May (peak) |
| 35 | Daisy Fleabane | Erigeron strigosus | Sunflowers, Daisies, Asters, and Allies | 15 | Jun (rising) |
| 36 | Venus's looking-glass | Triodanis biflora | bellflower family | 15 | May (peak) |
| 37 | Field madder | Sherardia arvensis | madder family | 13 | Mar (past peak) |
| 38 | Cross Vine | Bignonia capreolata | bignonia family | 13 | Apr (past peak) |
| 39 | Pale Grasspink | Calopogon pallidus | Orchids | 13 | May (peak) |
| 40 | Bristly Mallow | Modiola caroliniana | Mallow and Hibiscus Family | 12 | Apr (past peak) |
| 41 | Sea Ox-Eye | Borrichia frutescens | Sunflowers, Daisies, Asters, and Allies | 12 | Jun (rising) |
| 42 | Rabbitfoot Clover | Trifolium arvense | Legumes | 11 | May (peak) |
| 43 | Persian silk tree | Albizia julibrissin | Legumes | 10 | Jun (rising) |
| 44 | Whitemouth Dayflower | Commelina erecta | Spiderworts | 10 | Jun (rising) |
| 45 | Annual Fleabane | Erigeron annuus | Sunflowers, Daisies, Asters, and Allies | 10 | May (peak) |
| 46 | Chinese Tallow | Triadica sebifera | Spurge Family | 10 | Jun (rising) |
| 47 | Wild Carrot | Daucus carota | carrot family | 9 | May (peak) |
| 48 | Woodland Coreopsis | Anacis major | Sunflowers, Daisies, Asters, and Allies | 9 | Jun (rising) |
| 49 | American white waterlily | Nymphaea odorata | Waterlily Family | 8 | Apr (past peak) |
| 50 | Common Selfheal | Prunella vulgaris | Mint Family | 8 | Jun (rising) |