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Feb 12, Best offers for your Garden - bushleaning.bar to Prune Aspen Trees. The aspen (Populus tremuloides) is an attractive shade tree th. Yes, remove any growth from the root flare, surface roots, and the lower trunks. This growth (known as suckers and water sprouts), if left unchecked, will grow into large, structurally unsound, and unattractive new trunks and branches, which can drain the rest of the tree from resources.
In a lawn, regular mowing keeps root suckers at bay. Although you can trim back an aspen tree at any time, some times are better than others. It's safest to prune when the tree's dormant, so do major pruning during winter whenever possible, or in early spring before buds swell and put out new leaves. If you prune in late winter or early spring, the tree exudes sap at the fresh cuts, which can be messy. Sep 21, Trim aspen trees in August or September. If you are unable to cut branches that are out of your reach, hire a professional to do that part of the pruning.
Cut branches that cross or touch. Cut the smaller of two touching branches. Use the three-cut method described in Step 1 if the branches.
Most specimen trees, including the aspen, do not need regular pruning, but they do benefit from shaping in order to maintain the best possible appearance. The aspen tree, like many others, will also benefit from the removal of damaged, diseased, congested or crossing shoots which can affect the overall health of the tree and again, its appearance.
Sep 21, Sterilize your pruning saw with methanol to prune an established aspen tree. The recommended method for pruning an aspen is to thin it by cutting branches back to the trunk of a tree. Thinning the tree will help it to maintain shape and improve air circulation through the branches to prevent fungus from growing.