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Photo by: William Cullina

What to Cut — And When: Certain plants benefit from more regular pruning, while others need time to regenerate between cuts. This guide summarizes the timing that’s best for different varieties.

Cut Back Every Year

◗ Buddleia

◗ Callicarpa

◗ Catalpa (to produce larger foliage and prevent flowers)

◗ Ceanothus (deciduous species) 

◗ Cercis (for foliage effect)

◗ Clethra

◗ Comptonia

◗ Cornus (shrubby species)

◗ Cotinus

◗ Diervilla

◗ Franklinia 

◗ Heptacodium

Hydrangea arborescens, H. paniculata, and H. macrophylla (reblooming)

◗ Lagerstroemia

◗ Physocarpus

◗ Rhus

◗ Rosa 

◗ Salix 

◗ Sambucus

◗ Spiraea

◗ Vitex

Go to next page for what to prune every 2 to 3 years.
This article was first published in Garden Design February/March 2013