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Plant Health Care Report Issue 2010-16

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

Plant 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

 


Insects

  • 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
     

Diseases

  • 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)