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

University of Minnesota Extension

Extension > Garden > Diagnose a problem > What's wrong with my plant? > Fruit > Grape > Malformed or unusual growths (canes and trunk)

Print Icon Email Icon Share Icon

Grape > Woody Vines > Malformed/unusual growths (canes/trunk)

1 of 2
  • Image: Crown Gall 1

Crown Gall
Agrobacterium vitis

  • Galls first appear on the trunk near the soil line
  • Young galls are soft, light green in color, with no bark
  • Older galls are brown to black and are hard
  • Poor shoot growth and fruit production may be seen on severely infected vines
  • Vines suffering from winter injury due to cold winter temperatures are more susceptible
  • More information on Crown Gall...
2 of 2
  • Image: Eutypa Dieback 1
  • Image: Eutypa Dieback 2
  • Image: Eutypa Dieback 3

Eutypa Dieback
Eutypa lata

  • Young leaves will appear smaller, cupped and chlorotic
  • Shoots are stunted (shortened internodes)
  • Shoots growing on infected canes will appear deformed and discolored
  • A canker that is flat in appearance develops on older woody vines, often around old pruning wounds
  • Symptoms usually only seen in vines >6 years old
  • More information on Eutypa Dieback...

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