Autumn: Transition & Preparation for Winter

September 18, 2025

What changes:

  • Leaves change color, drop off.
  • Tree metabolism slows.
  • Soil temperature drops, root growth slows.


Autumn care tips:

  • Clean up fallen leaves and debris. Decaying leaves can harbor disease; compost what you can, remove what you can’t.
  • Final pruning. Remove any hazardous or dead limbs before snow and ice arrive. Avoid pruning too late in fall (very close to freezing), as wounds heal slowly in cold.
  • Mulch again. Replenish mulch to insulate roots during winter.
  • Water well. Before the ground freezes, give trees a good deep watering. Drought stress going into winter can lead to winterkill.