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 Botanic Garden >> Gardening >  >> Question and Answer >> Plant Species >> Trees

Leaf Galls on Pear and Other Trees: Cosmetic Only

What They Are

Round bumps causing leaf curl are galls—plant tissue reaction to insect/mite feeding. The pests usually leave before galls are noticed.

No Treatment Needed

  • Galls don't kill trees.
  • Healthy trees push new growth.
  • Sprays ineffective once galls form.

Outlook

Ignore them. They may be worse after mild winters but are temporary.

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