Walnut tree bug?

Asked June 16, 2018, 9:33 AM EDT

What is growing on this walnut tree?

Baltimore County Maryland galls insect or spider id

1 Response

These are galls caused by a mite. https://bugguide.net/node/view/600337
They can look unsightly, but in time, gall insects are often controlled naturally by beneficial predators and parasitoid insects. https://extension.umd.edu/hgic/shade-tree-galls

ckc