QuestionsHow to growTrees and ShrubsHedges and Shelter beltsEscallonia Hedge 0 Vote Up Vote Down Paula Comiskey asked 15 years ago When or do I prune my escalonia hedge it is about three years old but only a year in the ground, it also so has some yellow spots on it. If yes how do I prune it. Also I have whitethorn in the hedge do I prune that too? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Clip escallonia in April and September to what ever shape you like, and the whitethorn at the same time, if it is in the same hedge.