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Blueberry > Stems/branches > Unusual growth on stem or branches

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  • Image: Iron Chlorosis
    Credit: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org
  • Image: 2

    Credit: Michelle Grabowski, University of Minnesota

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green arrowCrown Gall
Agrobacterium tumefaciens

  • Galls (tumor like overgrowth) occur on roots, where the stem meets the soil, and occasionally higher on stems
  • Young galls are soft, light green in color, with no bark
  • Older galls are brown to black and are hard
  • Severely infected plants may be stunted
  • More information on Crown Gall...
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  • Image: Honeycrisp Leaf Mottle Disorder 1
    Credit: Bruce A. Watt, University of Maine
  • Image: Honeycrisp Leaf Mottle Disorder 2

    Credit: Bruce A. Watt, University of Maine

  • Image: 3

    Credit: Michelle Grabowski, University of Minnesota

  • - CLICK PHOTOS TO ENLARGE -

green arrowWitches Broom
Pucciniastrum goeppertianum

  • Broom-like clusters of swollen reddish brown stems and small leaves develop in the plant
  • Young stems within brooms are initially yellow or reddish, but later become brown and shiny, and, eventually, dry and cracked
  • Will cause needle yellowing and loss in nearby fir trees
  • More information on Witches Broom...

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