Bob founded Keystone Tree Experts in 1968 after working in the tree care industry for six years. He attended Pennsylvania State University as a forestry major and still maintains a professional relationship with many university staff members. He has held numerous positions within the Pennsylvania - Delaware chapter of the International Society of Arboriculture (ISA) including serving as President in 1990 and 1995. He is a member of the Southeastern PA IPM Research Group and a founding member of the Pennsylvania Professional Arborists. Bob is a frequent speaker at horticultural seminars and on local radio and TV programs. Bob is based in Doylestown where he cares for many residential and commercial properties. He is also the municipal arborist for Doylestown borough and township.

Dave has been with Keystone Tree Experts since 1986 covering the Solebury, Bucks County area. He is a Certified Arborist and a 1979 graduate of Colorado State University with a B.S. in Ornamental Horticulture. His 20+ years of horticultural experience has helped to establish his broad-based knowledge of the insect and disease problems affecting your trees and shrubs. Contact Dave to design a custom Plant Health Care (PHC) program for your property by calling our Solebury or Doylestown office.

Herb joined Keystone Tree Experts in 1992 after working in the landscape design business. He is a 1979 graduate of Delaware Valley College with a B.S. in Ornamental Horticulture. He is a Certified Arborist and a Pennsylvania Certified Horticulturist. Herb has also served on the Executive Board of the Pennsylvania - Delaware Chapter of the International Society of Arboriculture. He is a member of the Cheltenham Township Shade Tree Commission. His extensive background in landscape design, PHC programs and insect control ensures that his customers receive the highest level of expertise in evaluating their properties.

Dennis joined Keystone Tree Experts in 1992 as a PHC specialist. He is a Certified Arborist and a Pennsylvania Accredited Nurseryman. He has 20+ years of horticultural experience with an extensive background in PHC and insect/disease identification and control. He is a Pennsylvania Licensed Pesticide Applicator. His vast experience in the green industry helps to provide our Solebury, Bucks County clients with the best possible diagnosis and treatment programs.