Ironweed
Vernonia spp.
Vivid purple in August; deer leave it alone.
Hardiness: zones 4 to 9
Light: full sun
Size: about 5 ft tall, 3 ft wide
From: E. and central North America
Here: Hardy in the Lake Erie shore climate (zone 6b to 7a), so it can live outdoors in the ground.
Good for: pollinators, butterfly and moth caterpillars.
Native to: Southeast, Midwest & Great Lakes, Great Plains & Texas, Northeast. Hardy in zones 4 to 9.
The story
Ironweed earns its name from stems so tough that cattle graze around it and farmers curse it. In a garden that toughness is the point: nothing knocks it over, and its purple is the strongest of late summer.
Planting
Full sun and average to moist soil. It tolerates clay.
Growing
Cut back by half in early summer to keep it shorter. Deadhead if you don't want seedlings.
Harvest and use
August and September nectar for monarchs, skippers and native bees, right when little else is in bloom.
What to watch for
It reseeds freely and it gets tall.
See if Ironweed fits your yard
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More native and wild plants
General guidance, not professional advice. Conditions vary by yard and year; for local specifics ask your county extension office. Never eat a wild plant you cannot identify with certainty. Traditional uses are shared as history, not medical advice. © 2026 Sean Priest · Irie Orchard. Terms & credits · Privacy · Home