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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Cotoneaster > Curled or stunted leaves

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Cotoneaster > Leaves > Curled or stunted leaves

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  • Image: Codling moth 1
  • Image: Codling moth 2
  • Image: Apple Scab 3

Powdery Mildew
Podosphaera clandestina

  • Patches of white, powdery or felt-like fungal patches on leaf surfaces
  • Leaves and shoots may be puckered or distorted
  • New leaves and shoots may be smaller than normal
  • Powdery white fungal growth may be present on ripened berries
  • Symptoms may develop over a single season, or over several years
  • More information on powdery mildew
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  • Image: Fire Blight 1

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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