From wildlife to insects to fungi, there are many organisms that pose potential threats to the health of an aspen tree.


Aspen along a road in autumn

Keeping Your Aspen Healthy

  • Maintain a proper watering schedule – aspen will suffer if over- or under-watered.
  • Prevent direct sprinkling of leaves by lawn watering systems.
  • Unwanted aspen sprouts that appear in the lawn may be mowed. DO NOT spray the sprouts, as they are connected to the mother tree.
  • Avoid wounding the main trunk with movers or weed wackers.
  • Trim out cankers that are less than half the circumference of the aspen.
  • Clean up heavy scale-insect infestations.

What’s Ailing Your Aspen? Poster (935 KB PDF)