June is the moment when the garden stops behaving politely and starts hurling growth in every direction. Shrubs surge forward, spring-flowering plants slump into untidiness, and climbers begin plotting world domination. Knowing the key plants to prune in June will keep borders blooming, encourage healthier growth, and prevent your back yard from becoming overgrown.
This is also one of the busiest months for corrective pruning. Spring-flowering shrubs should be trimmed before they set next year’s buds, early perennials benefit from a haircut to encourage repeat blooms, and fast-growing hedges need reigning in before they swallow paths and windows whole. I always think of June pruning as editing rather than butchery, a little refinement now saves hours of chaos later in summer.