I'm starting to dig holes for some plants I'm going try to and grow this year (Yes I know I'm a little behind schedule) and I was wondering just how deep and wide I should be digging. The dirt I'm digging in is quite rocky and very hard so unless It's absolutely necessary I don't want to have to spend the time chipping slowly away at the dirt. I read on another forum that cannabis roots only grow to a depth of around 16" inches and I was wondering if there was any truth to that. If I'm wrong please let me know how big you think I should dig my holes (I'm digging with a shovel and a pick ax). Thanks!