Arborists in Bartlett Tree Experts' Waltham, MA office are committed to helping local residents and businesses maintain beautiful, healthy trees and shrubs. Our office in Middlesex County services the greater Boston area, including Brookline, Cambridge, Newton, Weston, Wellesley, Sudbury, and all MetroWest towns.. Fertilization and Soil Care,Insect and Disease Management,Mosquito Sprays,Pruning,Tree Inspections,Tree Structure Evaluation