duluth, mn growing?: advice NEEDED

so, it is generally not frosting anymore by early early may and on a good year does not get cold enough to frost until mid october in the fall. me and my ciz are considering growing some killer buds at my cabin, and it is very remote up there. the biggest problem i suppose would be caring for them a few times a week as we dont go up there but once a week. i was just curious about how deep u should plant, because ranger said to plant them 3 feet down and that seems REALLY deep, i was wondering why u should do this?? thanks in advance

shobs

 

Sorry to say, but the outdoor season is done......And the bigger hole you dig and backfill with soil.....the more room the roots have to grow. More roots = bigger plants. Bigger plants = bigger yeilds.