Storing Seeds Long-Term: Temperature and Humidity Control

Seed longevity requires constant temperature and low humidity. If seeds were bone-dry, moving from freezer to a cool closet is safe. If any moisture remains, temperature shifts can cause condensation inside the seed, killing the embryo. Best practice: store thoroughly dried seeds in a jar with a tablespoon of silica gel, placed in the back of a freezer or a cool, stable closet.