The document provides guidance on pruning young shade trees to establish proper structure and form. It discusses that pruning should be minimal at planting to allow roots to regenerate. It differentiates between training objectives for trees with central leaders versus those with multiple scaffold branches. The objectives are to develop structural integrity by removing damaged or competing branches, maintaining a single trunk or leader, establishing permanent lower branches, and selectively removing temporary branches over time.

1. Colorado Master Gardener Training Pruning: Training Young Shade Trees

3. Pruning at planting slows root regeneration. Gibberellins produced in the root growing tips stimulate growth in the canopy. Auxins produced in the canopy growing tips stimulate root growth .

6. Overall best pruning time: late winter-early spring

7. Wound dressings/paints?

18. Training objectives: Decurrent trees (multiple scaffold branches) Lack of training when young predisposes decurrent trees to wind and storm damage.

31. Ash Aspen

32. Honeylocust Ash

39. Ash

40. Ash

41. Linden

42. Crabapple