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? > Deciduous > Serviceberry > Dense clusters of twigs

Print Icon Email Icon Share Icon

Serviceberry > Trunk/branches > Dense clusters of twigs

1 of 1
  • Image: Eastern Tent Caterpillar 1
  • - CLICK PHOTO TO ENLARGE -

Black witches' broom
Apiosporina collinsii

  • Witches' brooms, clusters of numerous weak shoots arising from one point on a branch, occur randomly throughout the tree
  • Dark, olive colored spots of fungal fruiting bodies on underside of leaves
  • Leaves within witches' brooms are first yellow and stunted, turn black
  • Common in wooded, shaded and moist areas

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