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Plant Health Care Report Issue 2013-15

The Scouting Report of The Morton Arboretum for Aug 9, 2013.

Plant Health Care Report 2013-15

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Panicled hydrangea (Hydrangea paniculata)Panicled hydrangea (Hydrangea paniculata)photo: John Hagstrom

What indicator plant is in bloom at the Arboretum?
Panicled hydrangea (Hydrangea paniculata) is in bloom

Accumulated Growing Degree Days (Base 50): 1781.5 (as of Aug 8)
Accumulated Growing Degree Days (Base 30): 4307.5 (as of Aug 8)

Insects:

  • Emerald ash borer after 10 years
  • Red milkweed beetle
  • …and milkweed bug
  • Cypress twig gall
  • Tortoise beetle
  • Banded longhorn beetle


Diseases:

  • Melampsora rust
  • Fungal problems on kerria


Miscellaneous:

  • Sycamore bark falling off
  • Urban tree care conference for professionals