When is the best time to trim hedges? Green leaf hedges June to October Evergreens April to August Conifers and other fast growing shrubs Every 6 – 8 weeks Related articles How should I maintain and store my Hedge Trimmer? How should I store my trimmer when not in use? What is SharperBlade? How do I sharpen the blades on my Hedge Trimmer? My Hedge Trimmer is not operating properly, what do I do?