Safe Height Reduction for Mature Arborvitae Hedge

Don't Cut 25-Foot Arborvitae in Half at Once

15-year-old, 25–30 ft arborvitae in NE PA. Owner wants to top at 12–14 ft.

Why Drastic Topping Fails

• Removes too much photosynthetic capacity.
• Causes severe stress, potential death.
• Leaves bare, scraggly middle for years.

Gradual Reduction Plan

Reduce 3–5 feet per year. Allows adjustment. Accept temporary ugly phase. Fertilize annually to support recovery.