Border Builder

Ironweed 'Iron Butterfly'

Vernonia lettermannii 'Iron Butterfly'

Illustration of Ironweed 'Iron Butterfly'

Ironweed 'Iron Butterfly' is a perennial for focal point, mid-border, suited to full sun and loam or sandy soil, flowering Aug, Sep, Oct.

TypePerennial
Mature height90 cm
Spread75 cm
Aspectfull sun
FoliageDeciduous
HardinessUSDA 4a-9b
Pollinator-friendlyYes
Pet-safeNot confirmed

Where to use it in a border

At around 90 cm, it sits best toward the back of a border, or on its own as a focal point with room around it. Give it about 75 cm of room to spread. It is hardy across USDA zones 4a to 9b, so check it suits your area before planting.

It appears in our lists of full sun, sandy soil, pollinator-friendly plants.

Border Builder uses Ironweed 'Iron Butterfly''s height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.

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Flowering through the year

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Worth knowing

Good companions

Plants that share its conditions and style, chosen to complement its place in the border:

Garden styles

Meadow Native Wildlife garden

Sources

Bloom timing and hardiness drawn from: