QuestionsHow to growTrees and ShrubsPruningPruning Dwarf Conifers 0 Vote Up Vote Down judy o keeffe asked 16 years ago Hi Gerry when is the best time to prune 6 year old Dwarf Conifers? I want to maintain their shape but reduce their size and am unsure how much to remove. Thank you for this excellent service it’s much appreciated! 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago The best time for a light trim would be in spring, or in September if it is not too windy and exposed.Â