Horticulture
Department

Introduction

Biology

Damage

Cultural Control
coming soon

Biological Control

Chemical Control

References

Terminology

Links
coming soon

Acknowledgements

Damage

Damage from woolly aphid feeding can be extensive. Aphid feeding induces curling in growing plant tissue. Enation or cupping of tissue can occur from the feeding of a single aphid. This damage is long lasting and can gravely impact the quality of nursery grown ash trees. The most critical economic damage in shade tree production occurs when the tree terminals are affected, often causing cull trees.

Honeydew produced by the aphids is copious and may promote the growth of black sooty mold.

curled leaves on new growth

aphid honeydew

aphids under tape