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Red Leaf Galls on Young Bartlett Pear: Eriophyid Mites

What They Are

Red bumps on pear leaves are galls from eriophyid mites. Mites overwinter, emerge at bud break, feed causing green galls that redden. Cosmetic only—no threat to tree.

Prevention

Too late to treat this year. Next spring, apply mite control product at bud break from garden center.

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