Plant Health Care Report issue 2018-3

April 27, 2018

The scouting report of The Morton Arboretum for April 27, 2018.

PDF iconPlant_Health_Care_Report_2018_3 (PDF)


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What indicator plant is in bloom at the Arboretum?
Corneliancherry dogwood (Cornus mas) is in full flower

Accumulated Growing Degree Days (Base 50): 19.5 (this is as of April 25)
Accumulated Growing Degree Days (Base 30): 587.5 (this is as of April 25)


Insects/other pests

  • Spring is a little late
  • Eastern tent caterpillar
  • European pine sawfly
  • Gypsy moth



  • Cedar apple rust



  • Bishop’s weed



  • Wise use of pesticides


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Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic