hi Savdawg64, most autos start to flower within 4 weeks. careful with the nutes, i would recommend 1/4 strength, for the first feeding and see how they react.I grew 3 gelato og auto, they were short and bushy, dry yield about 2oz per plant. I have a watermelon og auto growing now, it sprouted on Feb. 1., hasd about a week to go