- (Malus x callaway) This crabapple tree is a pollinator for all apple varieties. The Callaway crabapple tree is one of the most beautiful white flowering crabapples for your garden. The pink buds turn into white blossoms that then become a large 1 1/4" red fruit. The crabapples flesh is crisp, yellow and mildly tart. The Callaway crabapple is also great for jellies as well as fresh eating. This variety of crabapple tree is also very disease resistant growing 12’ – 15’ if not pruned shorter.