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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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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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
