13 wildflowers were recorded blooming in Hawaii in May in our iNaturalist sample; 6 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in May
Tree Tobacco
Straggler Daisy
Scarlet Pimpernel
Common Purslane
Cowpen Daisy
Oriental false hawksbeard
Shaggy Portulaca
Alkali Heliotrope
Madagascar Periwinkle
Common Cat's-ear
Puncture Vine
False Daisy
All wildflowers blooming in Hawaii in May
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Tree Tobacco | Nicotiana glauca | nightshade family | 7 | Apr (past peak) |
| 2 | Straggler Daisy | Calyptocarpus vialis | Sunflowers, Daisies, Asters, and Allies | 6 | May (peak) |
| 3 | Scarlet Pimpernel | Lysimachia arvensis | primrose family | 6 | May (peak) |
| 4 | Common Purslane | Portulaca oleracea | purslane family | 4 | Apr (past peak) |
| 5 | Cowpen Daisy | Verbesina encelioides | Sunflowers, Daisies, Asters, and Allies | 4 | Feb (past peak) |
| 6 | Oriental false hawksbeard | Youngia japonica | Sunflowers, Daisies, Asters, and Allies | 4 | May (peak) |
| 7 | Shaggy Portulaca | Portulaca pilosa | purslane family | 4 | May (peak) |
| 8 | Alkali Heliotrope | Heliotropium curassavicum | borage family | 3 | Dec (rising) |
| 9 | Madagascar Periwinkle | Catharanthus roseus | Dogbane Family | 3 | Jan (past peak) |
| 10 | Common Cat's-ear | Hypochaeris radicata | Sunflowers, Daisies, Asters, and Allies | 2 | Jul (rising) |
| 11 | Puncture Vine | Tribulus terrestris | caltrops | 2 | May (peak) |
| 12 | False Daisy | Eclipta prostrata | Sunflowers, Daisies, Asters, and Allies | 2 | Apr (past peak) |
| 13 | American black elderberry | Sambucus canadensis | elder family | 2 | May (peak) |