Pruning Shamel Ash in Arizona: Timing and Technique

Peoria, AZ homeowner wanted to raise canopy of large Shamel ash in August for lawn sun exposure.

Timing: WAIT UNTIL FALL

Pruning now (mid-growing season) attracts borers, encourages frost-tender growth, and shortens tree life. Prune when leaves fall (fall) or before bud break (spring).

Pruning Technique

• Cut dead branches ¼ inch from trunk (preserves branch collar).
• Wounds >6 inches: apply wound dressing. Smaller: leave natural.
• Large limbs: 3-cut method (undercut, top cut, remove stub) to prevent bark tearing.

Resource

NCSU Pruning Guide with Diagrams