Abstract
Pruning of container-grown sweet gum trees by heading 20, 30, and 50% of the top at transplant time produced no significant positive influence on growth and establishment when compared to nonpruned trees. Total growth of plants pruned 30 and 50% was restricted. Heading impaired the natural excurrent (conical) form of sweet gum. However the lost leader of some trees was replaced by a clearly dominant, upright lateral branch. Results of fall and spring transplanting were similar. Supplemental irrigation during prolonged dry periods produced significantly larger, more desirable landscape trees.
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