Seed is alive, its strength and vitality of seed storage conditions and length of life are closely related. In warm, moist, seed of life activity under intense air flow conditions within the seed nutrients quickly consumed, seed shorter life expectancy, has lost viability seeds can not be used for planting seedlings; lower in cool, dry, slow air flow conditions The seed of life activity slow, seed longevity can be relatively prolonged. Therefore, 1--2 annual herbs flower seeds should be stored in a cool, dry, airtight conditions. 1 year shelf life are phlox, kochia, primrose; preservation of 2--3 years have drunk butterfly flower, Hanabishi grass, pansy, marigold, Verbena, aster, daisy, nasturtium, sweet Bowl beans, poppy, drunk butterfly flower, sage, straw daisy, snapdragon, cornflower; preservation of 4--5 years have poppy, Portulaca grandiflora, zinnia, Wallflower, snake eye daisy, violet , petunia, tricolor amaranth, cockscomb, calendula.