Serradula gigantea, Vernonia gigantea
TALL IRONWEED
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Vernonia gigantea, also known as giant ironweed, or tall ironweed, is s native to the United States and Canada. The plants are up to 2.1 metres, 7' tall. The flowers open over a long period from summer to late fall, and are deep-purple in colour. They are excellent for providing a focal point at the back of the garden, and also for naturalizing meadows and open woodlands. Ironweed are very attractive to many pollinators!
Type: Hardy perennial
Hardiness zones: 5-9
Height: 5', 150cm
Sow just under the surface of the soil and water in. Then cover them with plastic and place in a fridge for 90 days. Be sure they stay moist. After the cold stratification they are then brought back to room temperature 20-22°C (68-72°F) for them to germinate. Germination is irregular over a long period of time, generally 60-90 days, but some can take longer. Do not discard the planting tray, as patience is needed, and they are well worth the wait.
Serradula gigantea, Vernonia gigantea
TALL IRONWEED
- Unit price
- / per
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Vernonia gigantea, also known as giant ironweed, or tall ironweed, is s native to the United States and Canada. The plants are up to 2.1 metres, 7' tall. The flowers open over a long period from summer to late fall, and are deep-purple in colour. They are excellent for providing a focal point at the back of the garden, and also for naturalizing meadows and open woodlands. Ironweed are very attractive to many pollinators!
Type: Hardy perennial
Hardiness zones: 5-9
Height: 5', 150cm
Sow just under the surface of the soil and water in. Then cover them with plastic and place in a fridge for 90 days. Be sure they stay moist. After the cold stratification they are then brought back to room temperature 20-22°C (68-72°F) for them to germinate. Germination is irregular over a long period of time, generally 60-90 days, but some can take longer. Do not discard the planting tray, as patience is needed, and they are well worth the wait.