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Witch Hazel Gall Aphid on Fothergilla: Cone-Shaped Leaf Galls

Cone-like swellings on fothergilla leaves are caused by the witch hazel gall aphid. The insect induces the leaf to form a protective chamber around her. Cosmetic only; no control needed. Fascinating insect-plant interaction.

About Gardening: Maple Leaf Galls: Cynipid Wasp, Cosmetic Only; Maple Leaf Tatter: Early Injury, Not Ongoing Pest; Fuzzy Balls on Fallen Oak Leaves: Gall Wasps, Not Fungus; Fothergilla 'Mount Airy': A Fragrant, Blue-Green Shrub with Stunning Fall Color; Managing Iris Rust Without Starting Over; Leaf Gall on Leucothoe: Exobasidium Fungus; Azalea and Camellia Leaf Gall: Identification and Prevention; Cherry Leaf Galls: Harmless Bumps Caused by Insects; Witch Hazel Gall Aphid on Fothergilla: Identifying Those Cone-Like Growths; Yaupon Holly Psyllid Galls: Prune to Break the Cycle

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