I bought one of Andy Smiths Burlap Bonanza trees before I knew I might be moving to a climate it wouldn't grow in early this spring. It's doing well here in Brooklyn, it was late to push it's candles but they're extending now. Didn't give it any special treatment other then wiring it to the 4 corners of the pot so it wouldn't sway in the wind, and adding significantly more granite to my mix. I have one of his older established collected trees as well and it's happy and healthy. I think it's just important to make sure they dry out inbetween.