Myth #3: Trees should be pruned back heavily when they are planted to compensate for the loss of roots.

Tree establishment is best on unpruned trees. Although pruning the top can reduce the amount of water that evaporates from the leaves, the tree needs a full crown to produce the much-needed food and the plant hormones that induce root growth. The tree will develop a stronger, more extensive root system if it has a fuller crown. Limit pruning at the time of planting to structural training and the removal of damaged branches.