Philadelphia North, Pennsylvania

Mark Mercaldo, district manager
Mark loves working with people, both his customers and colleagues, whom he considers family. He joined Davey in 1978 but began his career in the green industry as a high schooler, working at local nurseries and doing landscape work. He graduated from Penn State with a degree in agronomy and has been a certified arborist since 1985.

Mark, his wife, and their two daughters love skiing, and he enjoys fishing, boating and skiing at the Jersey shore.

Robert O'Rourke, sales representative
Robert loves educating homeowners about the importance of proper pruning, plant health care and the physiological approaches toward tree and property care. A certified arborist and certified pesticide applicator, he joined Davey in 1989 after learning how to professionally climb trees.

Robert and his wife have three daughters, including twins. He enjoys golf, archery and billiards and loves watching professional football.

Jason Parker, sales representative
Jason followed in his father's footsteps when he joined Davey in 1998. He loves working outdoors and especially enjoys learning about unique histories of his client's properties and helping to maintain them as a source of pride. A graduate of Kent State University, he is a certified arborist.

Jason, who is an amature motorsport competitor, and his wife are expecting their first child in early 2011.