Plant Health Care Report Issue 2010-16

August 13, 2010

The Scouting Report of The Morton Arboretum for August 13, 2010.

PDF iconPlant Health Care Report 2010-16


Included in this issue:


Limelight panicled hydrangea (Hydrangea paniculata ‘Limelight’)
Limelight panicled hydrangea (Hydrangea paniculata ‘Limelight’)
This week's indicator plant
  • I have run out of Orton’s indicator plants, so for this week I’m sharing an interesting plant that’s flowering right now.
  • Limelight panicled hydrangea (Hydrangea paniculata ‘Limelight’)


Weather Update

Accumulated Growing Degree Days (Base 50): 2132.5

Accumulated Growing Degree Days (Base 30): 4994.5



  • Annual cicada
  • Red milkweed beetle
  • Yellow-necked caterpillars
  • Black vine weevil damage
  • Imported willow leaf beetle
  • Milkweed tussock moth
  • Peach tree borer
  • Ash flower gall


  • Cytospora canker of spruce
  • Sightings elsewhere
  • Possible phytoplasmas on red maple and
  • red-osier dogwood

Woody of the week

  • American Hornbeam, Blue Beech, Ironwood, Musclewood (Carpinus caroliniana)