In this video, we learn how to identify common tree problems. If you use too much fertilizer you can find a burn scar that is left on the bark of the tree. You can avoid this by making sure fertilizer spikes are placed away from the tree. Tree splitting is also an obvious sign that a tree is in bad shape and needs to be cut and taken down. A common leaf problem is Pear Slug Damage. A great way to help this to use wood ash on the tree, which will kill the insects that cause this and it's safe for the tree.