Vigorous, upright perennial with lance-shaped, dark green leaves and branching, reddish-purple stems bearing hairy, lance-shaped leaves and loose clusters of bright yellow flowers in summer.
Helianthus giganteus
Giant sunflower
Details
| Aspect | Full sun |
| Flower Colour | Yellow |
| Flowering Period | Jul | Aug | Sep |
| Foliage | Not evergreen |
| Goes Well With | Aster, Helenium, Monarda |
| Growth Habit | Clump-forming |
| Hardiness | Fully hardy |
| Height | 3m |
| Soil | Rich and fertile |
| Spread | 1.5m |
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