QuestionsHow to growTrees and ShrubsTrainingcrab apple tree – prune 0 Vote Up Vote Down emer odonoghue asked 14 years ago A new crab apple tree. How far do I prune back.? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago A crab apple tree needs no pruning, except to remove an occasional shoot that might be badly placed.