To propagate blazing star, the most common method is to divide the corms by digging up the plant in early spring when new growth is just starting, separating the corms into sections with at least one “eye” or bud on each piece, and replanting them individually; you can also propagate blazing star by collecting seeds in the fall and cold-stratifying them before planting in the spring.
Key points about propagating blazing star:
Division by corms: This is the easiest way to propagate blazing star, as it naturally produces offset corms that can be separated and replanted.
When to divide: Early spring, just as new growth emerges, is the best time to divide the corms.
Seed propagation: Collect seeds in the fall, and then cold-stratify them (store in the refrigerator for a few weeks) before planting in the spring to improve germination.
Planting depth: When replanting divided corms, bury them about 2-3 inches deep in the soil.
Important considerations: Ensure each corm section has at least one “eye” or bud for new growth.
Space the newly planted corms adequately to prevent overcrowding. If you choose to propagate by seed, be aware that it might take longer for seedlings to flower compared to plants grown from divided corms.