In Minnesota if you are caught growing cannabis, you will be charged under the possession/sales laws, but the weight, and therefore level of charges, is the whole plant weight, so even one mature plant puts you in felony range. Possession of 45.2 grams to 10 kilograms (a small tent grow) is a 5 year felony and a $5,000 fine. Over 10 kilograms is up to 20 years and a $250,000 fine.