Yes, 10 acres is indeed a lot. My Father owned 7 Acres and on 1/3rd of His Property He raised over 300 Tomato Plants every Year. They were delicious....Beefsteak and Acers! Just growing Marijuana on all 10 Acres is a pretty big deal. GroZone and Roto-Gro will get it done Organically. $$$$ AMFE $$$$