Aphids

Characteristics
Aphids are small insects that vary in color from white to yellow to green and may have wings.

Damage
  • Attack deciduous trees
  • Can cause wilting or yellowing of leaves
  • In small numbers the damage is mostly aesthetic and generally will not pose a threat to the health of trees or plants
Control
Aphids have many natural predators, including ladybugs and their larvae so an insecticide application is not recommended unless the infestation is very severe.
A group of aphids with the photo courtesy of the University of Delaware
Aphids found on a spruce tree
Damage caused by a severe aphid infestation
Damage caused by aphids