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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.

If you’re planning on keeping the tree, unless the roots are invasive, there’s no need to remove them, as doing so can cause damage to the tree. If the tree has been cut down and the stump and roots are left, grinding and removing the stump can cause root decay for some species. For other species, the stump and roots will need to be removed to prevent pests, disease, and possible tree regrowth.

According to scientists at Penn State University, spotted lanternflies do not typically kill the trees and plants they feed on, but they can cause branches and segments to die off. However, they have been found to kill cultivated grapes, which can have devastating consequences for vineyard owners and regions that heavily rely on vineyards to create jobs and generate revenue. They have also killed the Ailanthu altissima, known as the tree of heaven, though this is classified as a noxious and invasive weed tree.

Usually, trees cannot grow back after their stump has been ground, but some very hearty types of trees can. For example, if you have a black locust or Redford pear, the grinding will need to go deep to prevent them from growing back. Ask your tree service or stump removal expert whether your tree can resprout after its stump is ground down.