Yes, tree roots can regenerate after they’re pruned or cut. In fact, trimming can stimulate new growth, especially in healthy trees. The tree’s roots can still grow back even after a tree is cut down, (and learning how to get rid of regrowing tree roots is a separate feat). Still, if you don’t wish to harm a tree, pruning the roots should be done with extreme care, and ideally by a professional.

You can trim just one side of the tree, especially when that side is growing near something like a power line or a home. Pros will carefully trim the tree back until it is safe from that structure. While this is common, it also needs to be done with the utmost care, as pruning or trimming away at one side of the tree may make it structurally unsound. This instance is yet another where hiring a pro is wise, especially if power lines are involved.

A dead tree should always be cut down, because it could fall and cause injuries or damage, and it can also attract insects like carpenter ants. A tree that’s diseased beyond repair should also be cut down, but it’s not always easy for a homeowner to tell. Signs of disease include dying branches, a hollow trunk, leaning, and discolored or missing leaves, but your best bet is to hire a local arborist who can evaluate the tree and tell you if it can be saved or should be cut down.

If you’re wondering why tree trunks are painted white in your area, it’s usually to prevent sunscald, a condition where extreme shifts in temperature can cause tree bark to split. Fruit trees are especially vulnerable to sunscald, so this treatment is worth considering if it’s something that affects your trees.