Since each tree is different, it’s impossible to say how long a dead tree can remain on your property. While it could be days, months, or even years, it’s highly likely that, at some point, the tree will fall. In the meantime, dying or dead trees can become a haven for pests, so it’s best to have them removed sooner rather than later.

On grafted trees, tree suckers will grow from the root stock, not the branches grafted onto it. Therefore, the leaves and characteristics of the suckers aren’t the same as the tree because they are different varieties. Root stock has more hardiness, strength, or drought tolerance than its grafted limbs, so if the suckers are from fruit or flowers, it might be different than the main part of your tree.

You should not trim an oak tree in the summer. Oak trees are especially susceptible to disease, and open tree wounds are an invitation for beetles that carry tree-killing fungus. If there’s no risk that the oak tree will do damage to your property or hurt someone, it’s best to save the trimming for fall or winter. If you can, seal the wound with latex to prevent fungus from getting inside.

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.