
Herb · Seed
Purple coneflower
Echinacea purpurea
- Start indoors
- Feb 4–18
- Sow outdoors
- Apr 1–29
- Transplant outdoors
- Apr 15–29
Cold-stratify four weeks. A first-year plant is roots; bloom is year two.
Start indoors 8–10 weeks before last frost. Transplant at last frost through 2 weeks after.
Open the plate