Tree trimming can count as landscaping, depending on how a landscaping business describes its services. Professional tree trimmers are more specialized than landscapers and offer trimming services separately from general landscaping.

When general landscaping companies offer tree trimming, look up the details. They usually mean shaping or seasonal trimming of ornamental trees, which is different from trimming larger trees for health or safety reasons. When possible, look for a licensed expert that specializes in trees and tree health.

How often and long you should water a tree depends on the species and if it is mature or newly planted. The amount of water is also based on the tree's size. A good rule of thumb is approximately 5 gallons per inch of the trunk's diameter.

Adjusting watering to the recommended suggestions for the tree type and weather conditions is vital. For instance, watering trees during a drought is necessary, and you may need to water more frequently than usual.

Generally, you’ll want to prune back the trunk by 1 to 2 feet each year to promote bushy growth. Doing so concentrates vegetative buds closer to the bottom of the tree, where you can easily harvest fruit. For side shoots that are a year old, leave at least six leaves. 

Never remove more than 30% of a tree’s foliage during pruning—even if your tree is really overgrown. Removing this much foliage at a time could kill your tree.

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.