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Plant Health Care Report issue 2017-4

May 19, 2017

The scouting report of The Morton Arboretum for May 19, 2017.

PDF iconPlant_Health_Care_Report_2017_4 (PDF)

 

Bartlett Tree Experts--Presenting Sponsor of the Plant Clinic

 

Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic

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What indicator plant is in bloom at the Arboretum?
Old-fashioned weigela (Weigela florida) is in early flower

Accumulated Growing Degree Days (Base 50): 288 (as of May 18)
Accumulated Growing Degree Days (Base 30): 1709 (as of May 18)
 

Insects/other pests

  • European pine sawfly update
  • Viburnum leaf beetle update
  • Spruce spider mite
  • Aphids
  • Honeylocust plant bug
  • Elm leaf miner
  • Sawflies
  • Leaf rollers…
  • .. and other little caterpillars
  • Hydrangea leaftier
  • Scale
  • Pine spittlebug
  • Spittlebug
  • Galls, the first chapter

 

Diseases

  • White pine blister rust
  • Anthracnose
  • Peach leaf curl
  • Wetwood and slime flux

 

Miscellaneous

  • Spring cold and wind damage