Harvesting and Storing Nasturtium Seeds: Drying, Freezing, and Avoiding Hybrids

Seed Saving Steps

1. Harvest on a dry, sunny afternoon—moisture invites mold.
2. Do not save seeds from F1 hybrids—they won't come true.
3. Dry pods on cardboard in a warm, ventilated room for 1–2 weeks.
4. Store cool or frozen in film canisters or paper bags (plastic traps moisture).

Reference

See the North Coast Journal guide for West Coast nasturtium seed saving.