The ideal depth of a tree notch depends on the tree, but it should usually be between 20% and 25% of the tree’s depth. However, if the tree is leaning towards the direction of the notch, it can be cut more shallowly—at as little as 10% of the depth. When the tree is leaning away from the direction it needs to be felled, you can cut deeper, closer to 30%.

Consumers typically do not need to worry about the cost of tree insurance, as professional tree service companies pay for their own coverage. For a tree service business, an average U.S. policy covering about $1 million in general liability costs roughly $40 a month or $500 a year. More extensive policies, providing between $500,000 to $2 million in coverage, can cost between $3,000 and $6,000 annually, depending on the company's size and scope of work. Tree service professionals should speak with an insurance company to determine the right plan for their business.

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.

Some trees, such as silver maples, birches, sycamores, and scotch pines, shed their bark naturally. If your tree is not one that does this, it might have fallen prey to pests, fungi, or diseases. It could also simply be suffering from an extreme weather change, such as a snowstorm or heat wave. If you’re still stumped, consulting with a pro can help you diagnose your tree’s specific problem.