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 > Ironwood (Ostrya)
> Unusually colored area of bark on trunk or branches

Print Icon Email Icon Share Icon

Ironwood (Ostrya) > Trunk/branches > Unusually colored area of bark on trunk or branches

1 of 2
  • Image: Fire Blight 1
  • Image: Fire Blight 2
  • Image: Fire Blight 3

Smooth patch
Aleurodiscus oakesii

  • Sunken, relatively smooth, round to irregular areas of bark on trunk or branches
  • Affected bark is often lighter in color
  • Small cream colored disks or saucer-like fungal spore producing structures grow within affected area
  • Has no effect on the overall health of the tree
  • More information on Smooth patch...
2 of 2
  • Image: Fire Blight 1
  • Image: Fire Blight 2
  • Image: Fire Blight 3

Anthracnose
Apiosporopsis carpinea

  • Leaves have reddish brown irregular spots or blotches
  • Leaves may drop prematurely
  • Reddish brown cankers on branches; may become sunken and surrounded by ridges of wound wood with age
  • Dead twigs and wilted, bleached leaves on branches with girdling cankers
  • More information on Anthracnose...

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