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Pruning Hydrangeas: Timing and Technique

Prune hydrangeas in early spring before growth starts. Use the 1-in-3 rule: remove 1/3 of oldest stems to ground each year.

Identifying Old vs. New Wood

  • Old stems: Darker, rougher bark; thicker; may have peeling bark.
  • New stems: Smoother, lighter color (greenish to light brown).

By Species

TypeBlooms OnPrune
H. macrophylla (Bigleaf)Old woodAfter flowering (summer); only deadhead in spring
H. paniculata (PeeGee)New woodLate winter/early spring; hard prune OK
H. arborescens (Annabelle)New woodLate winter/early spring; cut to 12–18 in.
H. quercifolia (Oakleaf)Old woodAfter flowering; minimal pruning

Always remove dead, damaged, crossing branches. For the 1-in-3 method, cut oldest stems at base to stimulate vigorous new growth and better flowering.

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