Plant Health Care Report issue 2018-10

August 3, 2018

The scouting report of The Morton Arboretum for August 3, 2018.

PDF iconPlant_Health_Care_Report_2018_10 (PDF)


Quick View
What indicator plant is in bloom at the Arboretum?
Rose of Sharon (Hibiscus syricacus) is in full flower

Accumulated Growing Degree Days (Base 50): 1939.5 (as of Aug 2)
Accumulated Growing Degree Days (Base 30): 4473.5 (as of Aug 2)


Insects/other pests

  • Two-spotted spider mites
  • Bagworm
  • Milkweed bugs and beetles
  • Gypsy moth update
  • Fall webworm



  • Aster yellows (or not?)
  • Bur oak blight


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Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic