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Weigelea > Stems/branches > Tumor-like swellings near soil line

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  • Image: 1
    Credit: Robert L. Anderson, USDA Forest Service
  • Image: 2

    Credit: M. Grabowski, Univeristy of Minneosta

  • Image: 2

    Credit: Clemson Univeristy, USDA Cooperative Extension Slide Series, Bugwood.org

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green arrowCrown gall
Agrobacterium tumefaciens

  • Leaves wilt and die, plants grow poorly
  • Round to irregular woody overgrowth or tumor at soil line or on roots
  • Young galls are soft, light green or white
  • Old galls are hard, dark colored or black
  • Occasionally galls are seen higher on the stem
  • More information on crown gall...

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