fbpx Plant Health Care Report issue 2017-1 | The Morton Arboretum

Plant Health Care Report issue 2017-1

April 7, 2017

The scouting report of The Morton Arboretum for April 7, 2017.




Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic.

Quick View

What indicator plant is in bloom at the Arboretum?
Cornelian-cherry Dogwood is in late flower (Cornus mas)

Accumulated Growing Degree Days (Base 50): 33.5 (as of April 6)
Accumulated Growing Degree Days (Base 30): 683.5 (as of April 6)



  • Using growing degree days
  • Timing use of fungicides
  • Winter weather
  • Crabgrass preventer


Insects/other pests

  • Egg masses and more
  • Azalea bark scale
  • Hemlock needleminer
  • Boxwood leafminer
  • Jumping worms 



  • Boxwood blight (NEW DISEASE FOR ILLINOIS)
  • Cankers
  • Cedar rust
  • Volutella blight on pachysandra