Pruning them in the winter or early spring will remove the buds and, subsequently.
The best time to begin a pruning regimen of any tree is at the planting, notes the University of Minnesota Extension.
Flowering plum trees must develop strong, woody trunks. Cutting back weak. Most flowering plums don't require regular pruning, although certain circumstances may require pruning. You can prune in nearly any month, except during late summer or early fall, without damaging.
Cut each of the four branches back so that each one has just 1 or 2 buds.
Sep 21, For best results, prune flowering plum trees after they have bloomed. Buds are developed the previous season. Pruning them in the winter or early spring will remove the buds and, subsequently, the flowers.
Cuts or wounds do not need to be sealed. Feb 19, Thin out the top of a plum Pruning an ornamental plum tree while it is dormant in the winter will encourage more fruit production for the spring and summer.