Feminized Seeds — Why Are They ~99% Female?
Only female cannabis plants produce buds. Feminized seeds save you the effort of identifying and discarding male plants.
TL;DR: Production: A female plant is sprayed with colloidal silver or STS → it develops male flowers with purely female chromosomes (XX) → pollinating other females results in ~99% female offspring.
The Production Process
Colloidal silver (30 ppm) or STS is sprayed daily on a branch for 2 weeks starting from the induction of flowering.
This branch develops male flowers with an XX genome. The pollen is then used to pollinate other female plants.
The result: a 99%+ feminisation rate when done by experienced breeders.
When Regular Seeds Are the Better Choice
Breeders who want to cross their own strains → require male plants.
Those looking for a mother plant with long-term stability for clones → regular seeds are generally considered more robust.
FAQ
What is a hermaphrodite?
A plant that displays both male and female sexes. Under stress (light leaks, heat), a feminized plant can become hermaphroditic.
What is the price?
Feminized seeds cost CHF 5–15, regular seeds CHF 3–8, and autoflowering seeds CHF 6–18.