i hear certain ruderalis hybrids autoflower, but i hear its only like 4 out of 10 plants autoflower and the rest you have to actually flower yourself. also ruderalis might not be what you're looking for cuz i hear its usually low in potency.They can also withstand cooler climates than most other strains.

personally i havent tried any of the ruderalis strains out so i wouldnt know exactly but you may want to do some research on this if your interested.