I am wondering if someone could tell me which apple tree is most pollination compatible with "September Ruby". These are my other options right now. Carroll, Hardi Mac, Red Sparkle. We do not live close to neighbours with apple trees. I had bought some apple trees and after 6yrs of waiting my goats got to them and ate them, which was probably a good thing so that I can start again. Thanks in advance! I am in the mid north (zone 2) so am looking to plant two trees tomorrow in anticipation for the long winter, maybe.