CLASS l. FINE PRUNING
Fine pruning shall consist of the removal of dead, dying, diseased, interfering, objectionable, obstructing and weak branches, as well as selective thinning to lessen wind resistance. The removal of such described branches is to include those on the main trunks, as well as those inside the leaf area. An occasional branch up to 1/2” diameter, as described above, may remain within the main leaf area to its full length when it is not practical to remove it.
CLASS ll. MEDIUM PRUNING
Medium pruning shall consist of the removal of dead dying, diseased, interfering, objectionable and weak branches on the trunks as well as those within the leaf area. An occasional branch up to one inch in diameter may remain within the main leaf area where it is not practical to remove it.
CLASS lll. COARSE PRUNING
Coarse pruning shall consist of the removal of dead, diseased or obviously weak branches, two inches in diameter or greater.
§ CALLUS- New growth made by the cambium layer around all of a wound.
§ CAMBIUM- Growing point between the bark and sapwood.
§ CLOSURE- Refers to the roll of the callus growth around the wound area.
§ THE CUT- The exposed wood area that remains after the branch has been removed
§ CUT BACK- specified reduction of the overall size of the tree or individual branches, but may include the overall reduction of the sides as well as the top of the tree.
§ DORMANT- A condition of non-active growth. Deciduous trees are considered to be dormant from the time the leaves fall until new foliage begins to appear.
§ LIFTING- The removal of lower branches for underclearence.
§ PARENT STEM- The main trunk system of the tree
§ PRECUT or PRECUTTING -The removal of the branch at least 6” beyond the finished cut, to prevent splitting into parent stem or branch.
§ PRUNING- The removal of dead dying, diseased, live interfering, objectionable and weak branches in a scientific manner
§ SAP FLOW- The definite course assumed by sap in its movement through a tree.
§ SCARS or INJURIES – Natural or man-made lesions of the bark in which wood is exposed.
§ SUCKERS- abnormal growth of small branches usually not following the general pattern of the tree
§ THINNING CUT- The removal of live branches to reduce wind resistance and to create more space
§ TOPPING- Means the same as cut back.
§ TRACING- Careful cutting of the bark along the lines of sap flow to encourage closure and to be the outline of the wound area.