Witch Hazel Archives
Insects and diseases that can affect Witch Hazel (Hamamelis).
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Phyllosticta
Witchhazel blight is caused by a fungus, Phyllosticta hamamelidis. The fungus causes brown lesions bordered by darker brown margins.
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Spiny Witchhazel Gall Aphid
The aphid produces raised ribs or “corrugations” on the upper leaf surface that match deep furrows between the veins.