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

Ninebark > Leaves > Spots or blotches on leaves

1 of 2
  • Image: 1
    Credit: M. Grabowski, University of Minnesota
  • Image: 2

    Credit: M. Grabowski, University of Minnesota

  • Image: 2

    Credit: M. Grabowski, University of Minnesota

  • - CLICK PHOTOS TO ENLARGE -

green arrowPowdery mildew
Erisyphe polygoni

  • White spots or blotches on leaves
  • In severe cases leaves and young shoots may be completely covered with white powdery fungal growth
  • Leaves may be stunted, curled or puckered
  • Red or purple blotches may occur on upper leaf surfaces
  • More information on powdery mildew...
2 of 2
  • Image: 1
    Credit: Jeffrey Hahn, University of Minnesota
  • Image: 2

    Credit: Pennsylvania Department of Conservation and Natural Resources Forestry Archive, Bugwood.org

  • - CLICK PHOTOS TO ENLARGE -

green arrowCalligrapha beetle
Calligrapha spireaeae

  • Holes and chewed areas are found in leaves; feeding may be heavy
  • May be browning and drying of leaves
  • Adults are present in July and August
  • Adults are yellowish to reddish brown with ornate black and gold markings
  • More information on calligrapha beetle...

Don't see what you're looking for?