Giant Sunflower
Helianthus giganteus
| Description: This tall prairie sunflower has coarse leaves and spreads gently. |
| Propagation: Seeds or divisions of the rhizomes in spring |
| Initial bloom (month and week): July W4 |
| Garden name: Sunny Wetland Garden |
| Color of flower: Yellow |
| Height: 8-10′ |
| Spread: 36″ |
| Family: Asteraceae |
| Soil type: Neutral sand or loam |
| Soil moisture: Moist to wet |
| Light: Full sun |
| Zone: 3-9 |