10 wildflowers were recorded blooming in Hawaii in October in our iNaturalist sample; 3 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in October
White beggarticks
Telegraphweed
Straggler Daisy
Madagascar Periwinkle
Santa Maria feverfew
Common Cat's-ear
Lesser hop trefoil
White Clover
Alkali Heliotrope
Cowpen Daisy
All wildflowers blooming in Hawaii in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | White beggarticks | Bidens alba | Sunflowers, Daisies, Asters, and Allies | 6 | Jan (past peak) |
| 2 | Telegraphweed | Heterotheca grandiflora | Sunflowers, Daisies, Asters, and Allies | 5 | Oct (peak) |
| 3 | Straggler Daisy | Calyptocarpus vialis | Sunflowers, Daisies, Asters, and Allies | 5 | May (past peak) |
| 4 | Madagascar Periwinkle | Catharanthus roseus | Dogbane Family | 4 | Jan (past peak) |
| 5 | Santa Maria feverfew | Parthenium hysterophorus | Sunflowers, Daisies, Asters, and Allies | 3 | Oct (peak) |
| 6 | Common Cat's-ear | Hypochaeris radicata | Sunflowers, Daisies, Asters, and Allies | 2 | Jul (past peak) |
| 7 | Lesser hop trefoil | Trifolium dubium | Legumes | 2 | Oct (peak) |
| 8 | White Clover | Trifolium repens | Legumes | 2 | Jul (past peak) |
| 9 | Alkali Heliotrope | Heliotropium curassavicum | borage family | 2 | Dec (rising) |
| 10 | Cowpen Daisy | Verbesina encelioides | Sunflowers, Daisies, Asters, and Allies | 2 | Feb (past peak) |