Vernonia lettermannii 'Iron Butterfly'

Narrowleaf Ironweed

'Iron Butterfly' Narrowleaf Ironweed has many bright purple star-like flowers that appear in late summer and fall. Foliage is delicate and thread-like on a compact plant. This Vernonia is very tolerant of site extremes, both dry and wet and works well in the upper areas of bio-swales. Introduced by Dr. Allan Armitage and North Creek Nurseries.  One of the native plants chosen by Piet Oudolf for the newly planted meadow garden at Delaware Botanic Gardens. 2023 PHS Gold Medal Plant.

PRN Preferred:  Not only beautiful purple flowers, but also delicate unusual fine foliage.

  • Category: Perennials
  • Alternate Cultivar: Iron Butterfly
  • Hardiness Zone: 4
  • Height: 36 Inches
  • Spread: 24 Inches
  • Bloom Color: Pink

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Qty Description Comments Future Crop Future Crop Ready Date
738 Size: #1
Notes: WK39 l Bud and bloom
WK34 l Healthy, budding 1500 2026-10 Login for pricing
Substitutions are Available
Exposure
• Sun
Soil Conditions
• Dry
• Average
• Moist
Bloom Time
• Summer
• Fall
Foliage Color
• Green
Winter Interest
• Seedheads

Great Companions for Narrowleaf Ironweed