Jim Habaneros can get pot bound in a 5 gal pot that's 30" deep in a 4 month growing season. Me thinks that ye should look at maybe a 10 gal garbage pail for that long of a life span. Some of my own experiences even in my short growing season, Cayanne and Bolivan Rainbows do better in the ground than in 3 gal pots, Habs, Purria's, Country Girls Peter Peppers, did much better in the soil than they did in 5 gal pots. Pod size and quantity, and plant size were all reduced in pots vs field. OH won't let me bring 10 gal pails of dirt and plants into house. Oh well Lord Byron ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Yes, it had been transplanted to progressively bigger pots every year and at the end resided in a huge one....24 inches wide and 24 inches deep.