Giant Ironweed
Vernonia gigantea
Also known as
Tall Ironweed
Photo by CandideUK (All rights reserved)
Full Sun
Moderate watering
Frost Hardy
H7
RHS hardiness
-20°C
Minimum temperature
Expected size
Height | Spread | |
|---|---|---|
2.5m | Max | 2m |
1.5m | Min | 1m |
Flowering
-
spring
-
summer
-
autumn
-
winter
More images of Giant Ironweed
Giant Ironweed Overview
One of the tallest Ironweeds, capable of growing 2-3 metres in a season. Has stiff, leafy stems that branch out at the top. Native to river banks, wetlands and wildflower meadows. Prefers moister conditions but will grow in most average garden soils.
Other uses of Giant Ironweed
Effective background plant for borders or 'naturalised' in meadows or by water.