| | | Family | Compositae | | Plant Type | herbaceous perennial | | Zone | USDA: 5a - 9b RHS: H - FH EGF: H1 - H5 Australia: 1 - 3 | | Care Level | low, easy, suitable for beginners. | | Height | 0.9 - 3 m (3 - 10 ft) | | Spread | 0.3 - 1.5 m (1 - 5 ft) | | Light | full sun | | Soil Moisture | low to average, well-drained | | Soil Type | | | Soil pH | | | | Description | The herbaceous perennial Helianthus silphioides (rosinweed sunflower) bears showy flowers during late summer to mid-fall. | | Typical Uses | Cut flowers. | | Special Characteristics | This herbaceous perennial attracts birds and butterflies to your garden. | | Cautions | Depending upon your local conditions, Helianthus silphioides (rosinweed sunflower) may be invasive. | | |