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Plant Health Care Report issue 2017-3

May 5, 2017

The scouting report of The Morton Arboretum for May 5, 2015.

PDF iconPlant_Health_Care_Report_2017_3 (PDF)

 

Bartlett Tree Experts--Presenting Sponsor of the Plant Clinic

 

Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic

 

Quick View


What indicator plant is in bloom at the Arboretum?
Horse chestnut (Aesculus hippocastanum) is in early flower

Accumulated Growing Degree Days (Base 50): 171.5 (as of May 4)
Accumulated Growing Degree Days (Base 30): 1326.5 (as of May 4)
 

Miscellaneous

  • Wise use of pesticides
  • Replacing ash trees (or just planning for an additional tree in the landscape)
     

Insects/other pests

  • Viburnum leaf beetle
  • Euonymus webworm
  • Boxwood psyllid
  • European elm flea weevil
  • Hackberry nipple gall psyllid
  • Pine bark adelgid
  • Slugs

 

Diseases

  • Crown gall
  • Rust on buckthorn

 

Weeds

  • Ficaria verna, a weed of many names