This grow is still current. So I have not harvested anything yet. Generally, it takes 8 weeks for the average plant to finish flowering. Although in MN, the weather can go bad as you well know and you may have to pull early. Gotta watch the temps and the rains. If it's October 1st and you see rains coming for three straight days, it's best to harvest immediately.im also a mn grower. and i was just wondering how long it took your plants to flower and be ready for harvest