General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 36 - 72 inches
Plant Spread: 24 - 48 inches
Flowers: Showy
Flower Color: Purple
Bloom Size: Under 1"
Flower Time: Summer
Late summer or early fall
Underground structures: Rhizome
Uses: Will Naturalize
Wildlife Attractant: Bees
Propagation: Seeds: Stratify seeds: 3 months at 40 degrees

Common names
  • New York Ironweed
  • Vein-Leaf Hawkweed

This plant is tagged in:

  • Posted by Newyorkrita (North Shore, Long Island, NY ) on Oct 20, 2011 5:00 PM concerning plant:
    Years ago I bought a small four inch square pot of New York Ironweed which grew intro a lovely clump. When it is going to bloom, the New York Ironweed does grow very tall and then flops over leaning a lot. The bees and insects do love the deep purple blooms so much.

  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Mar 1, 2018 7:23 PM concerning plant:
    Ironweeds are similar to Joe-Pye-Weeds but have more open flower clusters with flowers in deeper purple color, and more slender, alternate leaves. The native range of this species is from Massachusetts to New York to Ohio and then southward. This species is supposed to have hair-like tips on the bracts of the flowers. It is fairly common in the meadows of southeast Pennsylvania. It is very attractive to a good number of butterflies and other pollinators as it blooms in July into September. It is sold by a good number of native plant nurseries in the eastern US. The name "Ironweed" comes from the stems being tough. It makes a fine perennial in the garden.
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