Mature Seed Color: Brown/light brown

Use a brown bag to collect seeds in September and October when the pod (follicle) begins to split open, revealing white silky string like floss. Do not open immature pods, this will render seeds inviable. Mature seeds are brown not green. To test whether a pod is ready, press gently on the seam; if it does not split, let it be and wait for it to open naturally.

Collection & Cleaning Tips: If collection occurs before the follicle completely opens and the white string (floss) expands, open the follicle carefully and remove the seeds from the main floss. Deposit seeds into a brown paper bag. (Helpful video from Save Our Monarchs Foundation.) If the floss has expanded to become “fluffy,” collect the entire follicle into a brown paper bag. The seeds will need to be manually separated from the fluff before storing or planting seeds.

Store clean, dry seeds in a refrigerator (40°F) in a sealed glassine envelope.

Germination Requirements: These seeds need a winter or cold period to germinate — a minimum of 30-60 days exposed to temperatures in the range of 40°F and below. Plant on the surface of moist soil as they need light to germinate. Sow outdoors in pots November through February.