New York ironweed is a robust wildflower with saturated-violet and narrow petaled flowers. Clusters of finely petaled flowers, in dense clusters, top a 5-7’ clump-forming plant. Normally found in nature in wet swales, Vernonia novaboracensis also grows well in drier sites in the garden without extra care. The intense purple flowers bloom for most of the month of September and attract many butterflies. Grow New York ironweed in full sun to filtered shade. It grows well in the flower border or native meadow garden with Andropogon virginicus, Helianthus angustifolius, Conoclinium coelestinum, Symphyotrichum novae-angliae, Liatris spicata, and Helianthus microcephalus. - Mt. Cuba Center
My first encounter with New York Ironweed was putting it in the corner of my community garden plot. The sun was so full and the soil so rich, that it almost did “too well”. I have since moved it to a nearby lilac patch that has gaps which this plant fills both physically and in terms of fall late-summer to fall blooming.
Vernonia noveborecensis is a spectacular, under-appreciated plant. In ideal conditions, it approaches being a beautiful butterfly attracting shrub that then dies back every winter.
Vernonia noveborecensis also has a cousin “V. glauca” that is a little shorter if that is what your garden requires. See: https://plants.usda.gov/java/profile?symbol=VEGL
For more information on this plant, visit the USDA Plants Database: