Best seed bank for feminized seeds depends on which genetics you’re after. Cannabis strains can’t all be feminised properly. They can be prone to hermaphrodites. No one wants any hermaphrodites to ruin thier sensimilla grow. sensimilla is Spanish for Marijuana without seeds. So all the energy goes into growing THC and CBD instead of producing seed. This degrades the THC in your buds. Production of seed instead of bud takes longer. Seed production uses more energy. Your harvest won’t be as potent in THC and CBD. That’s why so many people choose to grow using feminized seeds instead. No more males pollinating your important grow.