If an arborist is certified by the International Society of Arboriculture (ISA), the highest level of certification available is ISA Board Certified Master Arborist. According to the ISA, this credential is reserved for arborists “who have reached the pinnacle of their profession.” Check your arborist’s credentials before hiring to confirm their level of training and expertise.

Carefully pruning small roots no thicker than three inches in diameter won’t harm the tree. However, cutting larger roots may impact the tree's stability and nutrient absorption. It's advisable to consult an arborist or tree care professional to evaluate the root's size, the tree's health, and the potential impact of cutting. Proper tree pruning techniques and timing can minimize damage, but larger root removal may necessitate expert guidance to avoid compromising the tree's overall health and stability.

The cost of professional tree service, such as trimming, is $460 on average, but the price can range from $75 to $1,800. A more typical range is between $200 and $760. The final price depends on several factors, including the size and type of the tree. For example, trimming Crepe Myrtle trees costs an average of $80 to $400, while giant pine trees can range from $200 to $1,800. Other factors that influence the cost include the time of year, as services are often more expensive in the spring. Your location can also play a role; costs may be higher if you live in a remote area or if the tree is difficult to access. However, some professionals may offer a discount if you have multiple trees that need service.

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.