Milkweed Seed Viability: Late Winter Collection and Natural Stratification

Good News: Your Seeds Are Viable

Milkweed (Asclepias) seeds collected from split pods in late February have already experienced natural cold stratification—exactly what they need. The fall collection + refrigeration advice simulates what your seeds did naturally.

Two Easy Germination Paths

1. Refrigerator method: Plant in pots, cover with soil, dampen, seal in bag, refrigerate 60 days. Then warm for germination (10–20 days).
2. Outdoor now: Sow directly in prepared bed; remaining spring chill completes stratification. Natural germination as soil warms.

Keys to Success

• Fresh seeds from split pods = high viability.
• Light-dependent germination—don't bury deeply; press into surface.
• Monarch butterfly host plant—expect caterpillars!
• Perennial; returns yearly once established.

Either method works. Your daughter's pasture seeds are perfectly primed for success.