60 wildflowers were recorded blooming in North 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

Mountain Laurel

Partridgeberry
Flame Azalea

Pink Lady's Slipper

Jack-in-the-Pulpit
Painted Trillium

Large White Trillium

Red Trillium

Fire Pink

Chinese privet

Striped Wintergreen

Galax
All wildflowers blooming in North Carolina in May
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Mountain Laurel | Kalmia latifolia | heath family | 835 | May (peak) |
| 2 | Partridgeberry | Mitchella repens | madder family | 761 | May (peak) |
| 3 | Flame Azalea | Rhododendron calendulaceum | heath family | 759 | Jun (rising) |
| 4 | Pink Lady's Slipper | Cypripedium acaule | Orchids | 685 | May (peak) |
| 5 | Jack-in-the-Pulpit | Arisaema triphyllum | Arum Family | 581 | Apr (past peak) |
| 6 | Painted Trillium | Trillium undulatum | Herb-Paris, False Hellebores, Trilliums and allies | 573 | May (peak) |
| 7 | Large White Trillium | Trillium grandiflorum | Herb-Paris, False Hellebores, Trilliums and allies | 559 | Apr (past peak) |
| 8 | Red Trillium | Trillium erectum | Herb-Paris, False Hellebores, Trilliums and allies | 499 | Apr (past peak) |
| 9 | Fire Pink | Silene virginica | pink family | 478 | Jun (rising) |
| 10 | Chinese privet | Ligustrum sinense | olive family | 440 | May (peak) |
| 11 | Striped Wintergreen | Chimaphila maculata | heath family | 400 | Jun (rising) |
| 12 | Galax | Galax urceolata | diapensia family | 369 | Jun (rising) |
| 13 | Showy Orchis | Galearis spectabilis | Orchids | 334 | Apr (past peak) |
| 14 | Catawba Rhododendron | Rhododendron catawbiense | heath family | 295 | Jun (rising) |
| 15 | Philadelphia fleabane | Erigeron philadelphicus | Sunflowers, Daisies, Asters, and Allies | 284 | Apr (past peak) |
| 16 | American cancer-root | Conopholis americana | broomrape family | 233 | May (peak) |
| 17 | Red Columbine | Aquilegia canadensis | buttercup family | 226 | Apr (past peak) |
| 18 | Robin's-Plantain | Erigeron pulchellus | Sunflowers, Daisies, Asters, and Allies | 217 | Apr (past peak) |
| 19 | Wild Geranium | Geranium maculatum | Geranium family | 197 | Apr (past peak) |
| 20 | Lyreleaf Sage | Salvia lyrata | Mint Family | 193 | May (peak) |
| 21 | Strawberry Bush | Euonymus americanus | staff-vine family | 191 | May (peak) |
| 22 | Dwarf Crested Iris | Iris cristata | iris family | 188 | Apr (past peak) |
| 23 | Mapleleaf Viburnum | Viburnum acerifolium | elder family | 185 | May (peak) |
| 24 | Solomon's plume | Maianthemum racemosum | agave and allies | 179 | May (peak) |
| 25 | Pale Grasspink | Calopogon pallidus | Orchids | 177 | May (peak) |
| 26 | Canada mayflower | Maianthemum canadense | agave and allies | 173 | May (peak) |
| 27 | Bashful Wakerobin | Trillium catesbaei | Herb-Paris, False Hellebores, Trilliums and allies | 167 | Apr (past peak) |
| 28 | Helmet skullcap | Scutellaria integrifolia | Mint Family | 164 | May (peak) |
| 29 | Wood Anemone | Anemonoides quinquefolia | buttercup family | 164 | Apr (past peak) |
| 30 | American tuliptree | Liriodendron tulipifera | magnolia family | 155 | Apr (past peak) |
| 31 | American persimmon | Diospyros virginiana | persimmon family | 155 | May (peak) |
| 32 | Multiflora Rose | Rosa multiflora | rose family | 154 | May (peak) |
| 33 | Dame's Rocket | Hesperis matronalis | mustard family | 153 | May (peak) |
| 34 | Canadian lousewort | Pedicularis canadensis | broomrape family | 152 | May (peak) |
| 35 | Cucumber Root | Medeola virginiana | lily family | 152 | May (peak) |
| 36 | Hobblebush | Viburnum lantanoides | elder family | 151 | May (peak) |
| 37 | Summer Bluet | Houstonia purpurea | madder family | 148 | Jun (rising) |
| 38 | Mayapple | Podophyllum peltatum | barberry family | 145 | Apr (past peak) |
| 39 | Butterfly Milkweed | Asclepias tuberosa | Dogbane Family | 142 | Jun (rising) |
| 40 | Star Chickweed | Stellaria pubera | pink family | 140 | Apr (past peak) |
| 41 | Goat's Rue | Tephrosia virginiana | Legumes | 136 | May (peak) |
| 42 | Golden Ragwort | Packera aurea | Sunflowers, Daisies, Asters, and Allies | 136 | Apr (past peak) |
| 43 | Japanese honeysuckle | Lonicera japonica | honeysuckle family | 134 | May (peak) |
| 44 | Bluebead Lily | Clintonia borealis | lily family | 129 | May (peak) |
| 45 | Redring Milkweed | Asclepias variegata | Dogbane Family | 128 | May (peak) |
| 46 | Carolina sweetshrub | Calycanthus floridus | spicebush family | 125 | Apr (past peak) |
| 47 | White Clover | Trifolium repens | Legumes | 121 | May (peak) |
| 48 | Annual Fleabane | Erigeron annuus | Sunflowers, Daisies, Asters, and Allies | 111 | Jun (rising) |
| 49 | Daisy Fleabane | Erigeron strigosus | Sunflowers, Daisies, Asters, and Allies | 111 | Jun (rising) |
| 50 | Canada Violet | Viola canadensis | Violet Family | 109 | May (peak) |