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Jan 18, Thin fruit early so that remaining fruits are five to six inches apart. Discarding fruit may seem wasteful, but thinning allows the remaining fruit to develop to full size and reduces the risk of disease transmission and broken limbs. Prune regularly.
Summer pruning later than mid-July will have no effect on flower bud development.
Begin right after new trees are planted and continue pruning thoughtfully throughout the tree's life. Remove crossing/rubbing limbs, and limbs that grow inward toward the tree's center. Create a sturdy structure. As mentioned earlier, long, weak growth should be pinched back. Hand pinch, or prune, 3 inches (or so) off the end of each soft, leafy shoot.
Repeat in late summer if side shoots grow rapidly out. Oct 25, Fruit Tree Pruning - Summer Pruning Cautions. Summer pruning is a vague term and simply refers to the time of year pruning is performed (when trees have foliage) and does not describe the type of pruning cuts. Summer shearing of peach trees can reduce fruit size and soluble solids, but if vigorous vegetative shoots that shade the tree interior Estimated Reading Time: 10 mins.