Western Ironweed
Vernonia baldwinii
Last reviewed: June 2026
Vernonia baldwinii (Western Ironweed) is a native wildflower blooming purple from June through November across the central United States. This drought-tolerant forb attracts butterflies and bees to prairies and grasslands.
Light
full sun
Water
low
Size
36"–60" H × 12"–24" W
Bloom
Jun, Jul, Aug, Sep, Oct, Nov
Native to
AR, CO, IA, IL and 8 more states
Pollinators
butterflies, bees
Browse plants for this ecoregion
Western Ironweed is a tall native perennial that produces clusters of vibrant purple flowers from summer through late fall. This drought-tolerant wildflower grows in an upright, somewhat narrow form and goes dormant in winter. Its long blooming period and low water needs make it valuable for sustainable landscapes.
Growing Western Ironweed
Grow Western Ironweed in full sun and low water. Mature plants reach 36 to 60 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Western Ironweed is an HOA-friendly choice. Maintenance level: low. Tidiness: 2 out of 5.
Works well in: mid zone, backyard only.
- May flop without support
- Best in less formal zones
Wildlife value
This plant is excellent for supporting butterflies and native bees with its abundant nectar-rich purple blooms. The extended flowering season from June through November provides crucial late-season food sources when many other plants have finished blooming.
Common questions
- When does Western Ironweed bloom?
- Western Ironweed typically blooms from June through November, providing late-season nectar when many other wildflowers have finished.
- What pollinators visit Western Ironweed?
- Western Ironweed attracts butterflies and bees, making it valuable for pollinator gardens and native plant landscapes.
- Where is Western Ironweed native?
- Western Ironweed is native to the central United States, including Arkansas, Colorado, Iowa, Illinois, Kansas, Kentucky, Louisiana, Michigan, Missouri, Nebraska, Oklahoma, and Texas.
- What growing conditions does Western Ironweed prefer?
- Western Ironweed thrives in full sun with low water requirements, making it well-suited for drought-tolerant native plant gardens and prairie restorations.
- Is Western Ironweed HOA-friendly?
- Western Ironweed is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Western Ironweed fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.