Joshua Tree, the area's premier full service tree care firm, specializes in pruning & fertilization to save trees whenever possible. Cert. Arborist on staff. A clean, healthy, and aesthetically pleasing yard is a source of joy for a growing number of Americans. Discover Joshua Tree where our ISA-certified arborist can help you get the most from your landscape by providing your trees and shrubs with the care they need throughout the year. With over 100 years combined experience serving Pennsylvania and New Jersey, you know you can trust us with your tree care!