What's wrong with my plant? Give us your feedback

Crab Apple > Trunk > Overgrowth on trunk

1 of 2
  • Image: Crown Gall 1
    Credit: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
  • Image: Crown Gall 2

    Credit: William M. Brown Jr., Bugwood.org

  • Image: Crown Gall 3

    Credit: Division of Plant Industry Archive, Florida Department of
    Agriculture and Consumer Services, Bugwood.org

  • - CLICK PHOTOS TO ENLARGE -

green arrowCrown Gall
Agrobacterium tumefaciens

  • Galls (tumor like overgrowth) occur on roots, where the stem meets the soil, and at the site of pruning wounds
  • Young galls are soft, light green in color, with no bark
  • Older galls are brown to black and are hard
  • More information on Crown Gall...
2 of 2
  • Image: Graft Incompatibility
    Credit: M. Grabowski, University of Minnesota
  • - CLICK PHOTOS TO ENLARGE -

green arrowGraft Incompatibility

Don't see what you're looking for?