These Rainier Cherry Tree Whips are on Mazzard root stock in a 12″ pot. This tree should be pruned and planted right away. If your considering buying a few of these trees you should also pick up a pollinator tree like a Bing or a Skeena. If you order these trees plan on buying 1 pollinator for every 5-10 trees. Even if you are only planting 2 Rainiers, I would suggest 2 pollinators, just to be safe, as I do not guarantee rootstock trees and I plan on 1-3% loss per year, unfortunately its just reality.