Summary
Professional arboriculturists are well trained and practiced in the scrutiny of trees. However, the character and execution of that training frequently results in trees being examined as individual units within the landscape. This paper suggests that arboriculturists are less well equipped to understand the collective significance and interrelationship of trees in historic landscapes. It also introduces a technique by which arboriculturists might gain a greater understanding of such landscapes and consequently inform their management decisions upon them.