Tall Ironweed

Tall Ironweed
Vernonia gigantea

A towering native perennial with strong upright stems and clusters of vibrant purple flowers that bloom in late summer to early fall. Its bold height and rich color make it a striking presence in meadows, prairies, and wetland plantings. The long-lasting blooms attract a wide variety of pollinators and bring valuable late-season nectar to native landscapes.

Tall Ironweed naturally occurs in moist prairies, floodplains, streambanks, and open meadows. Its deep root system helps stabilize soil and allows it to withstand periodic drought once established.

Growing Conditions

• Height: 5–8 ft
• Spread: Clumping
• Light: Full sun to part shade
• Soil: Medium to moist soils; tolerates clay, loam, and rich alluvial soils
• Hardiness: Zone 4–9
• Growth Rate: Moderate to fast
• Tolerates seasonal flooding
• Deer resistant

Ideal for large meadows, wet prairies, rain gardens, and restoration plantings where height and late-season color are desired.

Ecological Value

• Exceptional nectar source for bees, butterflies, and other pollinators
• Provides late-season food resources when many plants have finished blooming
• Adds vertical structure and wildlife habitat to meadow ecosystems
• Deep roots improve soil stability and health

Larval Host Plant For

• American Lady Butterfly (Vanessa virginiensis)

Companion Species

• Joe Pye Weed (Eutrochium maculatum)
• Swamp Milkweed (Asclepias incarnata)
• Boneset (Eupatorium perfoliatum)
• Switchgrass (Panicum virgatum)
• Big Bluestem (Andropogon gerardii)
• Blue Flag Iris (Iris versicolor)
• Fox Sedge (Carex vulpinoidea)

Planting to Protect
Restoring to Thrive
Origin Native Plants

3.5 inch Pots