Answer: If seeds are kept in an air tight container and stored in a cool, dark location, they should remain viable for at least two years. You can store seeds longer, but their viability will diminish with age. I store mine in canning jars with a tablespoon or so of dried powdered milk, to help absorb moisture. Just put the containers on a closet floor, or way back in a cupboard, so the temperature remains constant and where it stays dark.
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