The best time to cut down a tree is during its dormant season, typically in winter or early spring, after all the leaves have fallen. Removing a tree during this period is advantageous for several reasons. Frozen ground helps secure the tree stump, protects the surrounding landscape from damage, and reduces the risk of the tree falling in an unintended direction. With the leaves gone, there is less risk of the tree's foliage getting tangled with other trees. Additionally, since this is often a slower season for tree services, you may be able to hire a professional at a lower rate. This dormant period is also the best time for tree trimming.

Once you confirm a tree is dead, you should remove it. Dead trees eventually fall, and larger trees in particular can cause damage to rooftops, fencing, flowers, and other objects. As we mentioned, letting decayed wood stay in your yard also invites risks to the surrounding landscaping and vegetation.

Aside from removing dead or diseased branches, you should prune your trees somewhere between every one and three years. Some people—particularly commercial farmers—prune their apple trees yearly to produce higher yields. This is the best way to promote tree health. That said, the average homeowner can get away with hard-pruning their mature apple tree every other year or every three years. 

The best time to prune Japanese flowering cherry trees depends on where you live and the type of flowering cherry tree. Some trees benefit from being pruned toward the end of winter or early spring, after the last freeze. Meanwhile, other trees do well after blooming, in late spring or early summer. Avoid pruning your flowering cherry tree in the early winter, as this encourages open wounds that can lead to infections or infestations.