Skip to Main navigation Skip to Left navigation Skip to Main content Skip to Footer

University of Minnesota Extension
www.extension.umn.edu
612-624-1222

Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Blueberry > Unusual growth on stem or branches

Print Icon Email Icon Share Icon

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

1 of 2
  • Image: Iron Chlorosis
  • Image: 2

Crown 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...
2 of 2
  • Image: Honeycrisp Leaf Mottle Disorder 1
  • Image: Honeycrisp Leaf Mottle Disorder 2
  • Image: 3

Witches 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...

Don't see what you're looking for?

  • © Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy