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From this uppermost bud, the new leader will emerge. Reduce the height of the leader by a foot or two, making your cut just above a bud. Cut right above the outermost bud that will remain. Reduce the length of each of the four scaffold branches by about half (but make sure each is left with at least a couple of buds). Together, they are said to comprise a "scaffold whorl," because they are primary (scaffold) limbs and form a circular arrangement of like parts.

See our guide to pruning plums for full details of how to train and prune trees into the shapes described below. The "best" branches point upwards from the trunk at roughly a 45-degree angle, are well-formed and disease-free, and spaced at about an equal distance from each other on the horizontal plane (for example, think of a North-facing, an East-facing, a South-facing, and a West-facing limb).Įven on the vertical plane, these branches should not be too close together ensure 6 to 12 inches of space between them on this plane. Avoid pruning all types of plum trees during the dormant season or in mid- to late autumn, to minimise the risk of infection from silver leaf disease and bacterial canker. These are the ones you will keep, pruning off the rest almost all the way back to the trunk, leaving just the branch collar. Look over the plum tree and determine what its four best branches are at a level of about 18 to 24 inches up from the ground. The next spring, you have three different pruning jobs to perform: Remove all but the best branches, shorten these "best" branches, and head back to the leader again. Create First Scaffold Whorl on the Plum Tree.The Spruce Home Improvement Review Board.