
Ironweed
Vernonia Noveboracensis
Bring bold late-season color and vital pollinator support to your garden with the striking Purple Ironweed.
Size
Installation
About this plant
Vernonia noveboracensis, commonly known as New York Ironweed, is a majestic perennial that delivers a vibrant punch of deep royal purple to the late summer and early autumn landscape. Its tall, sturdy stems are crowned with dense clusters of vivid, feathery flowers, creating a dramatic visual impact just as many other garden blooms begin to fade. Beyond its undeniable beauty, Ironweed is an ecological powerhouse, providing a critical nectar source for a wide array of pollinators, including butterflies like monarchs and swallowtails, as well as various bee species. This resilient plant is an excellent choice for naturalized areas, meadows, rain gardens, or the back of a perennial border where its height can be fully appreciated. Easy to grow and exceptionally long-lived, Ironweed thrives with minimal intervention once established, offering years of spectacular color and ecological benefit with its robust presence.
Care & maintenance
Ironweed is remarkably low-maintenance. Cut back spent flower stalks in late fall or early spring. Division may be performed every 3-5 years to maintain vigor, though it often self-seeds readily if conditions are favorable.
Quick facts
- Type
- perennial
- Mature height
- 4-7 feet
- Mature width
- 2-4 feet
- Sun
- Full sun to partial shade
- Water
- Medium to wet
- Growth rate
- Medium to Fast