Grow guide
How to grow Ironweed Prairie
Vernonia fasciculata
- Type
- Perennial flower
- Zones
- USDA zones 4–9
- Sun
- Full
- Time to harvest
- 365–548 days
- Spacing
- 18″ apart
- Density
- 1 per sq ft
- Habit
- Upright
- Frost tolerance
- Very hardy
- Sowing
- direct/transplant
- Start indoors
- 0 weeks before last frost
Care
- Water Weekly
- Deadhead As needed
Notes
Royal-purple flat-topped clusters July-September on 4-6 ft stems; blooms year 2; prefers moist soils; cold-stratify 60-90 days for spring sowing.
More perennial flower varieties
Grows well nearby
Track Ironweed Prairie from seed to harvest with Evengrow.
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