Santa Rosa plum trees have a superior quality flesh which makes it one of the most widely grown plums. The Santa Rosa plums are purple-red skin surrounds rich, tart, fragrant, yellow flesh. Growing well in hardy zones 5-10, it is self-pollinating, but adding another pollinator nearby may increase the size of your crop. Pollinate with AU Cherry, Producer plum trees. Mature height & width is 18-20'. Our plum trees are 3 year trees that our sold in 5 gallon lines and are approximately 5' tall and have a trunk of approximately 1". Because fruit trees often require cross pollination, we offer our five gallon size fruit trees at a "buy two trees and get an additional 15% off" for customers enrolled in our rewards program (excluding fruit bearing cherry trees).