This professional is one that makes their living taking care of trees residential areas, individuals, or even factories or companies. Having to use a tree service can mean that you have dying or dead trees that need to be removed before they become a hazard, that there is a number of trees on the property that need to be pruned, etc. It is very important to note that not all companies who offer a tree service operate identically so make sure that you are hiring a tree service company that is able to take care of the needs for the trees you are concerned about. All companies should be insured and bonded. For example, if you have an unsightly or dead tree that you need moved make sure that when the job is finished that the company will take away every piece of the tree, or trees and that the removal has been done efficiently and safe. Have a look at Tree Guardian for more info on this.
If you need to have tree care for your live trees you want to be sure that the company has the knowledge to care for these trees. They should also know how to safely remove any dead branches without damaging the live tree and they know how to do selective topping and pruning. The owner and employees should also be an arborist, who is a professional that knowledge to care for a variety of trees. If you hire an individual or company is not an arborist you could inadvertently hire someone that will botch your trees and cause them to possibly become diseased, die, or grown unshapely.
A knowledgeable tree service company will also be happy to give a potential client a free estimates to what they are going to do and the cost for each service along with other information pertinent to the estimate. You should make sure that you get at least two estimates and compare them before making your final decision. One thing that the homeowner should make sure is in the estimate is that they will do a total clean up along with the removal of any debris from the job. Many reputable tree service companies will also take the time to discuss with the homeowner any landscape goals they have. They will be able to show the homeowner which trees in your yard that could hinder other grasses or plants growths in the area. If the tree service company has looked your trees over and spots any diseases they will tell you about them so you can have them treated so the trees will not die. Most will use a tree service when trees are starting to bud or become dormant.