Knowing how to preserve cannabis seeds can be especially helpful for home growers, particularly those who purchase seeds without planning to grow them right away. This guide outlines the key principles and practical steps for safely storing cannabis seeds and protecting their future potential. When the right conditions for cannabis seeds are maintained, they can keep viable for several years, ready to grow when needed. When these elements work together, cannabis seeds are far more likely to remain viable and ready for use when the time comes. Step-by-step: How to Store Cannabis Seeds CorrectlyStep 1 – Start With the Right SeedsStore only mature, firm, and undamaged seeds.