Plant Library

Ironweed Iron Butterfly

Common Name: Ironweed

Botanical Name: Vernonia

Variety: Iron Butterfly

Blossom Color: Purple

Bloom Time: Sep-Oct

Zone: 4 to 9

Exposure: Full Sun

Mature Height: 30-36"

Mature Width: 24-36"

Notes: Native. Vivid purple flower clusters in late summer that attract butterflies. Foliage is a common food source for many caterpillars. Foliage is narrow, fine and adds a beautiful texture. Tolerant of hot dry locations.