Pollen Donor

A pollen donor is a male or hermaphroditic cannabis plant selected and cultivated specifically to produce viable pollen for controlled breeding. In formal breeding programs, pollen donors are isolated from female plants to prevent unintended pollination, then their pollen is collected, stored, and applied to selected female plants. Pollen donor selection is critical to breeding success—breeders evaluate donor plants for vigor, stability, genetic markers, and resistance traits before incorporating them into crosses. The quality and viability of pollen directly influences seed set rates, genetic expression in offspring, and the reliability of breeding outcomes.

Breeders maintain pollen donor lines as foundational breeding stock, often preserving elite males or hermaphrodites across multiple generations. Careful documentation of pollen donor genetics, flowering timing, and pollen viability ensures reproducible crosses and helps track lineage inheritance patterns in breeding records.