What is the branch protection zone (BPZ) and why is it critical to identify before making a pruning cut?
-
A
The area of bark between the branch collar and the branch union that must be left undamaged
-
B
The zone of chemically and anatomically distinct tissue at the branch base that resists decay spread
-
C
The ring of cambium at the cut surface that initiates woundwood formation after pruning
-
D
The innermost layer of heartwood that protects the parent stem from decay entry