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Expert Says Prune Japanese Maples From November to January

Late-winter cuts trigger sap weeping that prolongs wound exposure.

Overview

  • Jessica Walliser of Savvy Gardening advises completing pruning no later than January.
  • She warns that late-winter pruning causes sap to weep, which can attract insects and elevate disease risk.
  • Spring and summer trimming is discouraged to protect the tree’s structure and appearance.
  • Begin by removing dead wood, typically found on the underside, then take out new growth that disrupts the tree’s shape.
  • Avoid cutting long lateral branches unless removal is essential, preserving the maple’s natural form.