Sometimes, knowing when you need tree-trimming services is straightforward, and other times, you have to do some investigating. Some tell-tale signs that you should have your tree trimmed include:

• A poorly-formed tree with unruly branches, which makes the tree appear odd-shaped. 

• A tree with tall or large branches that interfere with power lines or your home’s exterior.

• A tree that provides too much shade in the yard due to branch overgrowth.

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.

Generally, homeowners do not need permission to cut down a tree on their own private property, but there are several exceptions where a permit may be required. You might need a permit if the tree is particularly large, old, or a protected species, such as a heritage tree. Trees located near public property or power lines can also be subject to special rules. Additionally, many local governments and homeowners associations (HOAs) have regulations controlling which trees can be removed to manage an area's appearance or prevent the spread of invasive species. To avoid hefty fines, it is crucial to check with your local government and HOA to determine if a permit is needed before you begin.

The cost of professional tree trimming averages $460, with a typical range between $200 and $760. However, prices can be as low as $75 or as high as $1,800 depending on several factors. The size and type of the tree are major cost drivers; for example, trimming Crepe Myrtle trees costs an average of $80 to $400, while trimming giant pine trees can range from $200 to $1,800. Other factors that influence the price include the time of year, as services are often more costly in the spring. The tree's accessibility and your location also play a role, as a remote or hard-to-reach tree may increase the cost. Some professionals may offer a discount if you have multiple trees to trim.