Arborists can maintain the health of the whole tree in a way that many homeowners cannot; they understand that different trees have different nutritional needs and often interact in unexpected ways with other trees nearby.
What Can an Arborist Do?
Anyone who owns a tree should consider having an arborist do a consultation. The most beautiful tree could have dead branches, internal cavities, or a too-dense canopy. Far from affecting the health of only the suffering tree, these problems can have an impact on many things around or below it.
An arborist identifies unhealthy trees and potential problems. Dead branches can be removed, cavities filled, and canopies thinned to allow proper airflow. A professional will know what you can expect if you introduce a new tree or tear down an old shed. The arborist can also address long-term health with nutrients, biostimulants, and the latest technologies of arboriculture.
How to Find an Arborist
As Martha says, once you have found a good arborist, you won't want to let him go. That's understandable, considering that damage from bad pruning can take upward of ten to fifteen years to correct.
When you begin to search, look for an arborist who is a member of a reputable professional organization, such as the Tree Care Industry Association or the American Society of Consulting Arborists. These groups help their members keep up-to-date on current trends and techniques. A further qualification is certification by the International Society of Arboriculture, which indicates that the arborist has passed an extensive examination covering all aspects of tree care. Any of these groups can be contacted to find members in your area.
Having gathered a few names, set up interviews on your property. Afterward, check references; even go to see the work the arborists have done for other clients if the clients will allow it. Finally, make certain that the company has insurance and get everything in writing.