Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Cotoneaster > Curled or stunted leaves
Cotoneaster > Leaves > Curled or stunted leaves
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Woolly apple aphid
Erisoma lanigerum
- Feeding causes curled and stunted terminal leaves
- Adults produce white waxy material and form cottony white colonies
- Normally feed on new growth, but may be found feeding on new bark near wound sites
- Produce large amounts of sticky honeydew that is colonized by sooty mold
- More information on Woolly Apple Aphid
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Sooty Mold
- Black, brown or gray soot-like covering on leaf surfaces, twigs or branches
- Sticky, shiny secretions on leaves from sap-sucking insects (e.g., wooly apple aphid)
- Insects or signs of insect damage (distorted, pin-prick feeding marks, etc.) may be seen on leaves or twigs above the most heavily affected moldy areas.
- More information on Sooty Mold
