When is the best time to prune formal hedges?

When is the best time to prune formal hedges?

• A. In late fall when growth is inhibited.
• B. When it is green and succulent.
• C. During freezing weather.
• D. In midsummer heat.

Answer: (B)

Pruning formal hedges is most effective during active growth, when the plant is green and succulent. At this stage the tissues are actively photosynthesizing and the cambium is active, so wounds heal quickly through callus formation and new shoots respond promptly to the cuts. This allows you to shape the hedge tightly and maintain a dense, formal appearance.

Pruning in late fall is discouraged because growth slows and the plant is moving toward dormancy, which slows healing and makes tissue more vulnerable to winter injury. Pruning during freezing weather can cause tissue damage and slow recovery. Midsummer heat adds water stress and can lead to sunburn on fresh cuts or encourage uneven growth, compromising the hedge’s shape. So the best window is when the hedge is in full, healthy growth and can naturally seal and fill in the pruned areas.