2. Pruning wounds should be painted.
Common wound dressings have been shown not to slow down decay, prevent insect damage, and do not help a tree wound heal faster.
3. Trees should be pruned heavily when they are planted to compensate for root loss.
Tree establishment is recommended for unpruned trees. While pruning the top can reduce water evaporation from leaves, a tree needs a full crown in order to produce food and plant hormones to induce root growth.