Large pruning wounds may not heal well, and removing large limbs can stress the tree Unless really necessary, avoid removing branches that are over 20cm (8in) in diameter.Where possible, avoid leaving bare stumps when pruning branches as this encourages watershoots or causes dieback.If the framework still looks crowded, with more than eight to ten main branches, remove the surplus limbs.Remove unwanted branches entirely or prune to a well-placed side-branch that’s one-third of the diameter of the branch you’re removing Try to achieve well-spaced main branches, with 50–60cm (20–24in) between them (measured from halfway along the branch).Step back regularly to assess the canopy from a distance, making sure you really want to remove particular branches.To avoid dieback or excessive watershoots, the chosen side-branch you are pruning to should be at least one-third of the diameter of the branch you’re removing Prune overly long/tall branches to a strong, well-placed upward- and outward-growing side-branch lower down.Retain the better positioned, outward-growing one, unless it’s badly damaged Look for crossing branches – these tend to rub together and get damaged.Remove larger branches growing into the centre of the crown.Any lower branches that receive little light or are in the way can be removed entirely or pruned back to an upright shoot.Look in particular for canker – a common problem in older trees Start by cutting out any dead, broken or diseased branches and stems.RHS Garden Rosemoor Flower Show - Dates TBC.RHS Botanical Art and Photography Show - TBC July 2024.RHS Flower Show Tatton Park - 17-21 July 2024.RHS Hampton Court Palace Garden Festival - 2–7 July 2024.RHS Garden Wisley Flower Show - 5–10 September 2023.
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