if u want fast grow and fast harvest well fast harvest depends on how quick u can harvest it lol // id check out lowrider cause there done in 9 weeks and are autoflour so no timer needed
yeah, pothead is right. those are the fastest from seed to harvest. you probably will not yield more than a quarter off them though. if you more time and are looking for a bigger yield, sensi has a strain if i can find it. yup, here it is: SENSI SEEDS > CANNABIS SEEDS > Outdoor > RUDERALIS INDICA®
i don't really know much about it, so i'd ask around before buying it.