New York Ironweed (Vernonia noveboracensis) is a bold native perennial that brings strong vertical structure and late-season color to your landscape. You will love its deep purple flower clusters that appear from summer into fall, right when many gardens start to fade. Even when not in bloom, the upright stems and narrow, toothed leaves create a sturdy, architectural look in borders and naturalistic plantings.

Plant it in full sun for the best flowering, and it will also handle part shade, especially in hotter climates. Give it rich, consistently moist soil for the most vigorous growth, but it can adapt to average garden soils as long as it does not dry out for long stretches. It is a great fit for rain gardens, pond edges, and other spots that stay evenly moist or are occasionally wet.

Once established, New York Ironweed is typically low maintenance. If you want a shorter, denser plant, you can cut stems back in late spring to encourage branching. Tall stems may benefit from nearby companion plants for support, or you can stake early before buds form. Leave some stems standing over winter when possible, then cut back in early spring as new growth starts.

Use this perennial toward the back of a border, in a meadow-style planting, or along streams and swales where moisture is reliable. Its flowers are especially attractive to butterflies and other pollinators, and the seedheads can add seasonal interest as the year winds down.

Specifications

• Cold hardiness zone: 5-9 (-20 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Growth rate: Moderate
• Mature height: 36-48"
• Spread: 12-24"
• Tolerant of: Deer, Wet Conditions
• Attracts: Butterflies
• Good for borders & edging: Yes
• Long bloom time: Yes

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