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.