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.