fbpx Plant Health Care Report issue 2020-4 | The Morton Arboretum

Plant Health Care Report issue 2020-4

May 15, 2020

The scouting report of The Morton Arboretum for May 15, 2020.

 

PDF iconPlant Health Care Report issue 4 for May 15, 2020 (PDF)

 

Quick View


What indicator plant is in bloom in Dupage County?
Common lilac (Syringa vulgaris) is beginning to flower

Accumulated Growing Degree Days (Base 50): 121.5 (as of May 14)
Accumulated Growing Degree Days (Base 30): 1231.5 (as of May 14)

 

Insects/other pests

  • Viburnum leaf beetle update
  • Aphids
  • Hydrangea leaftier
  • Pine needle scale
  • Murder hornet

 

Diseases

  • Ralstonia pest alert
  • Wetwood and slime flux
  • Phomopsis tip blight
  • Plant viruses

 

Weeds

  • Bishop’s Weed

 

 

Bartlett Tree Expert Logo

 

Bartlett Tree Experts, Plant Clinic Sponsor