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New York Ironweed

Vernonia noveboracensis

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Medium-Wet to Medium
Bloom time
Jul–Sep
Bloom color
Purple

About New York Ironweed

New York Ironweed is a majestic native perennial that brings a bold architectural presence to late-summer landscapes. Standing 5 to 8 feet tall, its sturdy, upright stems are crowned with dense, branching clusters of deep violet-purple, thistle-like flowers from August into September. These vibrant blooms are a magnet for pollinators, particularly Monarchs, Swallowtails, and long-tongued bees seeking late-season nectar. Native to the eastern United States, it naturally thrives in moist meadows, stream banks, and low-lying fields, making it an excellent choice for rain gardens or naturalized wet areas. While it prefers full sun and rich, moist, slightly acidic soils, it is remarkably adaptable and can tolerate brief periods of drought once established. For smaller garden spaces, stems can be pinched back in early summer to encourage a more compact, bushier habit. This hardy species provides a striking vertical element and essential ecological support, making it a must-have for any wildlife-friendly garden.

Native range

Native to 21 states:

AlabamaConnecticutD.C.DelawareFloridaGeorgiaKentuckyMassachusettsMarylandNorth CarolinaNew HampshireNew JerseyNew MexicoNew YorkOhioPennsylvaniaRhode IslandSouth CarolinaTennesseeVirginiaWest Virginia

County range map

BONAP county-level native range map for Vernonia noveboracensis

Range map courtesy of BONAP (Biota of North America Program).

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