Arboriculture is the art and science of caring for trees and shrubs. An arborist is a person that is skilled in the art and continues to study the science.
Trees are living organisms, dependant on their surroundings. They need healthy soil to anchor their roots in and provide them with water and nutrients in adequate amounts. They also need sufficient sunlight to drive the photosynthetic process which produces the energy needed by the plant.
Well maintained trees add to the value of your home as well as to the quality of your life.