Here it is...
"banana peel method - O.K Before you germinate your seeds, place your seeds in a sealed plastic bag containing banana peels for 14 days. Wrap the banana skins in tissue to absorb any moisture they give off. Keep the bag in a warm place & air the seeds regularly, replacing the skins as they ripen. Ethylene, a naturally occuring gas given off by the ripening bananas not only increases germination, but also feminizes your seeds....
yes, it's true.
just my experience here. ga3 is the best shot at germinating old stock. tried many different ways, many different times and this is what works for me. if i want to feminize a seed and increase germination, use banana peels. 100% success rate there...
hope this helps fellas. "
https://www.thcfarmer.com/community/threads/germing-old-seeds.61384/