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Never cut back the leader on trees that are excurrent, such as oaks,
Plate IV. The hedge which may look unkept, and ragged if not pruned,will in the hands of the skilled gardener assume almost any degree of refinedoutline. These photographs show one of our most desirable hedge plants,the Japanese privet (Ligustrum ibota). (See Chapter III) birches, spruces, and sugar maples. If the leader is killed it is oftenpossible to train the best lateral available as a substitute. This maybe done by binding the lateral to a pole and tying with raffia. If the tree is weakened or is dying, severe pruning will often aid inoffsetting the trouble and may help the tree to recover its vigour.Many trees and shrubs, as poplars, soft maples, the tree of heaven,box elders, hydrangeas, and sumacs will stand very heavy pruning andrecover rapidly. Oaks, elms, and flowering dogwoods should be prunedonly as corrective measures and not to check growth. |
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