Pruning should be done in late winter or early spring. A 15-year-old shade tree that was properly pruned when young. If heavy sap flow occurs, pruning should be delayed until it stops or wait until midsummer. Late Blooming Trees. Some trees can bleed sap if pruned in late winter and early spring. When maples are pruned in late winter or early spring the wounds can be more damaging. Make sure the maple tree has between 5 and 8 established branches while trees that are younger than 5 should have been 3 and 4 branches. Dead, broken, and diseased branches can be removed at any time of year. These trees should be trimmed to be evenly balanced throughout with a tall, full oval shape. It is usually best to try and keep tree (and shrub) growth under control with regular pruning, but this is not always practical, especially if you inherit overgrown trees and â¦ Some trees, such as birch, dogwood, elm, honey locust, maple, and walnut exude excessive sap from the wound when pruned in late winter or early spring. Maple trees contain sap, which will âbleedâ if the tree is pruned in early spring or late winter. Damaged, dead, or diseased limbs should be pruned off of fig trees whenever you find them. Maple trees have sap that many people will tap for making syrup. Evergreen Trees . I know that these trees are pruned into beauty, but mine has begun to look like a shaggy dog. Try shaping and pruning certain desirable branches if you would like to plan for a swing, tree house or unique tree structure. Japanese maple trees come in two major types: laceleaf and upright maple trees. The dogwood (Cornus spp.) Some suggest light spring pruning, especially if you want to create the healthiest branches for your tree. As a maple tree, the Japanese Laceleaf will bleed or ooze sap. But oak trees have unique pruning needs because they can be infected with oak wilt, a deadly disease brought on â¦ Prune frequentlyâyearly if possible. Pruning maple trees during the dormant season will help your trees with new growth in the spring when they bloom. Japanese maples are low-maintenance trees with beautiful red foliage. Make sure your trees are well-watered and healthy looking before removing any live wood. The best way to protect your trees is by hiring an ISA Certified arborist. Maple trees can provide more than just shade and beauty. However, because some trees can ooze sap when pruned in the winter, you're better off waiting until the summer to prune maples, birches, dogwoods, walnuts, and elm trees. Pruning Japanese Maple Trees in 11 Steps Step 1: Know When You Have to Prune a Japanese Maple. Pruning the maple several times a year is a great way to keep the maple in good health and looking elegant.[v161590_b01]. First of all, you shouldnât even consider pruning them before theyâve reached maturity. Japanese maples canât be pruned whenever you want to. As always with pruning trees, take out any dead, damaged or diseased wood, and any branches that cross over or are growing in the wrong direction. Learn when and how to start pruning maple trees. When Japanese maples are small, it is absolutely essential that they be pruned for shape and character. Whorled: Whorled branches, as the name implies, grow in somewhat of a circle around the branch.Examples of these would be Douglas-fir, firs, pines, and spruces. Silver maples need discipline to avoid becoming 100-foot top-heavy monsters. This is basic "maintenance pruning," similar to pruning that you would perform on other plants. Because of this, oak trees should be pruned in the winter months when the trees are dormant and to prevent the spread of oak wilt. Others argue that pruning a Japanese maple should occur in late fall or early winter, after all the leaves have fallen and when the tree is in its dormant period. By all means decide in the summer which branches are going to be troublesome - make a note - and do the work later. Remove branches of less than 2-inch diameter on older trees and remove crowded or intersecting branches to âlowerâ the crown. The reason for this dormant season pruning, is that Acers bleed their sap if pruned in the spring or summer. For example, a tree blooming in June of 2018 is blooming on growth from 2018. In most cases, youâd prune them in late winter or the earlier part of spring when itâs still cool outside. Trees such as maple, birch, and dogwood should be pruned in late summer or early fall. Elm trees should not be pruned between April 15 â¦ Heavy sap flow can lead to â¦ It is a very hardy tree, so winter pruning is not an issue; however pruning during freezing temperatures should be avoided. Tips for Pruning Trees. Simply prune the acer tree to the shape that you want it to be. Prune these trees in late spring, summer, or fall to minimize sap flow. Tree pruning should be a careful processâ never a quick, cheap routine. People ask about trimming or pruning Japanese maples fairly often and the short answer is yes, you should prune your Japanese maples. How often should you trim oak trees? Of course, the size and age of your tree, and the type you have determines how you should prune them. These trees should be pruned in early spring for the best bloom: Catalpa; Dogwood; American smoke tree; Hawthorn; Japanese tree lilac; Tree Pruning Methods Even though pruning sometimes canât be avoided, the goal is to prune less each year as a tree grows older and more established. Japanese maples are spectacular landscape tree specimens that offer year-round color and interest. Birches and walnuts often bleed if pruned at the wrong time. Gardeners who want to avoid this sap can wait until the tree has leafed out in late spring to prune their sugar maple. Trees can be pruned using two kinds of cuts: Heading cuts; Thinning cuts Keep Tools Clean When to Prune Maple Trees Keeping your maple trees healthy is important for tree growth and syrup production. These trees will "bleed" the sap and gunk up a saw or chainsaw. Remove silver maple branches that become thicker than one-half the diameter of the trunk. Sap and Tree Health. Itâs best to start pruning when a tree is young and hasnât developed unhealthy or awkwardly positioned branches. Branches that do not curve or divide can be pruned. If you cut into a maple and find sap, you should not be discouraged, because this simply means that the tree is still healthy and will leaf in the spring. The big leaf maple (Acer macrophyllum) is native along the West Coast and found in USDA zones 7 through 10. The familiar red maple (Acer rubrum) is a native, fast-growing shade tree that has an oval form. Non-whorled or random branching: Some randomly branched evergreens can re-grow from old wood.For example, you can prune yews well past the green needles into the center of the plant and they will still re-grow.