Post Harvest Seed Handling

Post-harvest seed handling refers to the practices and environmental conditions applied to cannabis seeds immediately after harvest and throughout storage to preserve viability and genetic integrity. Proper handling—including drying, temperature control, humidity management, and packaging—directly influences germination rates and long-term seed longevity. Breeders and seed banks recognize that seeds stored in cool, dry conditions (typically 4-8°C and 20-30% relative humidity) maintain higher viability over extended periods. Poor post-harvest practices can result in mold, premature germination, or genetic drift. Documentation of handling protocols is increasingly standard among professional breeding operations to ensure consistency across seed lots.

Breeders prioritize rigorous post-harvest seed handling to maintain pure lineages, protect F1 or stabilized line genetics, and ensure reproducible phenotypes across generations. Detailed preservation records support breeding program integrity and allow breeders to track seed viability when selecting parent plants for subsequent crosses.