An arborist specializes in the art and science of planting, caring for, and professionally maintaining trees. Arborists are educated and aware of the needs of trees and have the required skills and equipment to provide proper care. Properly maintained trees are aesthetically pleasing, increasing the value of your home. Neglected trees are unattractive and can be hazardous or unsafe. Pruning or removing trees can be dangerous work and you should hire a professional to complete the project safely. Only certified arborists who have experience working safely in trees should be considered.