Perennials, Weeds > Vernonia > Vernonia gigantea > Vernonia gigantea
Vernonia gigantea
Giant Ironweed
Origin: Native to the Eastern United States.
| Family |
| Asteraceae |
| Genus |
| Vernonia |
| Species |
| gigantea |
| Category |
| Perennials, Weeds |
| USDA Hardiness Zone |
| 4 |
| Canadian Hardiness Zone |
| 2 - 5a |
| RHS Hardiness Zone |
| H7 |
| Temperature (°C) |
| -35 - (-29) |
| Temperature (°F) |
| -30 - (-20) |
| Height |
| 150 - 240 cm |
| Spread |
| 90 - 180 cm |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| Cultivation |
| Grow in any soil in full sun. |
| Growth |
| Medium |
| Leaf Description |
| Lanceolate to lanceolate-ovate leaves featuring irregularly serrated margins on them and measuring at 25 cm. |
| Flower Description |
| Each individual flower features dense, fluffy, rose-purple disks, and blooms in corymbose cymes. |
| Notable Specimens |
| The A.M. Cuddy Gardens, Strathroy, Ontario, Canada. |
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