How should leftover seeds be stored?
Storage conditions are very important to seed viability. Exposure to moisture causes seed viability to decline, so seeds should be stored in a dry place in an airtight, watertight container. Zipper freezer bags, glass jars, plastic containers, and metal boxes can be used if they seal tightly. Buckets with tight lids also work for larger seeds like beans and corn. In humid climates, a desiccant such as silica gel or dry milk powder can be placed in the container to absorb moisture. Seed also should be kept cool, and can even be stored in the refrigerator or freezer.