Dead trees are dangerous for several reasons. They are structurally compromised and prone to branch or trunk failure, which can pose a significant safety risk to people, vehicles, and nearby structures. Dead trees can also harbor pests like termites, which may spread to other trees or your home. If a tree died from a disease, it could spread the illness to healthy trees. Additionally, the dry wood is highly flammable, increasing fire risk.

No, you cannot throw branches from your neighbor’s tree back into their yard, nor can you discard leaves or other plant matter that originated from their yard back over there if it happens to land in your yard. You are responsible for cleaning up plant matter that made its way into your yard.

Trimming a tree can take anywhere from just two hours to a full day, depending on the age of the tree, the number of trees, and the species. Young trees are generally easier to trim, as their branches are often thinner in diameter and easier to reach compared to mature trees. They also tend to be healthier. If you haven’t trimmed your trees before or it’s been a while, the process could take even longer.

It is possible to cut down a tree on your property yourself, but it is generally not recommended unless specific conditions are met. You should only consider this project if the tree is small (e.g., under 4-5 inches in diameter and short enough that you don't need a ladder to reach the branches), and you are experienced in handling a chainsaw. The tree must also be located far from any power lines, fences, homes, or other structures. Even for small trees, the work can be dangerous, and it's always advisable to have a spotter to ensure the tree falls correctly and no branches fall on you.

For any tree that is large, requires a ladder to access, or is near electrical lines or structures, you should always hire a professional. Attempting to remove a large tree yourself is extremely dangerous, poses a risk of serious injury, and could result in significant damage to your property.

Before any tree removal, it's also important to check your local and state regulations to ensure the tree is not historic or otherwise protected by your city.