They are the exception to the rule, but you should still prune them as soon as you can. Instead, prune in the middle of winter or early spring, he suggests. That's if you can't stop. Those who bloom in spring can cut their hair right after they finish blooming.
But get over this obsession with pruning, few plants other than fruit trees actually require it, and most gardeners do too much, not too little, McGrath argues. February to March is generally considered the best time to prune most deciduous trees. The absence of foliage at this time of year gives the individual a clear view of the tree and allows the selection and removal of appropriate branches. In addition, the plugging or compartmentalization of wounds occurs more rapidly just before the start of growth in spring.
The winter months (December, January and February) are the best time to prune oaks. Correctly pruned tree branches form a callus where the removed branch was once. This callus is essential for the health of the tree. Most tree branches that are cut to the trunk or a main branch require three cuts to prevent damage to the bark.
The first two cuts remove the weight of the tree branch, and the final cut is designed for the best growth of callus. Because the goal is not to change the size or shape of the tree, thinning must be constant throughout the tree. You only need to remove 10 to 20 percent of tree branches from the edge of the canopy. Large trees benefit from removing the end parts of branches between 1 and 4 inches in diameter.
Small ornamental and fruit trees can be thinned by removing smaller branches between ¼ and ½ inch thick. You need to prune the trees to thin the crown so that the tree looks completely unpruned. As a rule, light summer pruning can be done on most deciduous trees and shrubs. More intensive pruning should be carried out when the tree is inactive, preferably in late winter before active growth begins.
Trees such as maples (Acer) bleed heavily sap and must be pruned in winter while trees are dormant. Shrubs that bloom in spring, such as lilac and forsythia, bloom during the growth of the previous season and must be pruned within two weeks after flowering. Pruning at any other time will reduce or eliminate the flower display. Taking advantage of these months of inactivity gives me time to develop a plan for pruning and trimming trees in my landscaping.
She emphasizes that qualified tree care specialists are pruning trees every day throughout the year without many detrimental effects. Late winter and early spring pruning helps trees sink all of their precious energy to produce healthy new growth once the climate warms up. However, if the move is not included in the cost or if you are trimming the trees yourself, look for the moving services offered by the city. Trees that receive the right amount of pruning when young will need less excessive pruning as they grow.
By pruning and pruning trees in specific ways, you can encourage fruiting and flowering, shape plants into specific shapes, and control plant size.