Tree topping is a harmful tree-pruning practice where the top of the tree's crown is removed, cutting off the main branches, often leaving large, bare stubs. This is typically done to reduce the height of the tree, but it leads to numerous negative consequences for the tree's health and structure.

"Lion's tailing" a tree is a poor pruning practice where the interior branches and foliage of a tree are excessively removed, leaving only a tuft of leaves at the ends of the branches. This gives the branches the appearance of a lion's tail, hence the name.