Pines should be pruned in which window?

• A. early June to early July, just after new growth emerges
• B. late February to early March, when the tree is dormant
• C. early September to October, as the weather cools
• D. late July through mid-August, after new growth has hardened off

Answer: (A)

Pruning pines works best when you cut after the tree has started new growth. That flush of new growth means cambial tissue is active and the tree can seal the cut quickly and recover with less stress.

The window that fits this best is early summer, just after new growth has emerged. At this time, the tree is actively growing, wounds heal faster, and you’re avoiding winter dormancy or the late-summer heat that can stress a plant. Pruning during dormancy (winter) or after growth has hardened off later in the season slows healing, increases the chance of sunburn on exposed tissue, and can interrupt late-season growth.

So, pruning in early June to early July aligns with the pine’s growth cycle and supports clean cuts, quick healing, and overall plant health.