OBSERVE location, bloom time, and seed ripening dates and mark plants while they are still identifiable.
HARVEST seed when mature – at full size and beginning to ripen in color.
ALLOW seed to dry in a cool, dark, and dry location.
CLEAN seed by separating it from chaff or fleshy fruits.
STORE the seed in breathable containers like paper bags or envelopes in a cool, dark, dry environment.
LABEL seeds with the name of the plant species, the date of harvest, and the location of harvest.