fbpx Plant Health Care Report issue 2017-5 | The Morton Arboretum

Plant Health Care Report issue 2017-5

June 2, 2017

The scouting report of the Morton Arboretum for June 2, 2017.

PDF iconPlant_Health_Care_Report_2017_5 (PDF)



Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic.

Quick View

What indicator plant is in bloom at the Arboretum?
Arrowwood viburnum (Viburnum dentatum) is in early flower


Accumulated Growing Degree Days (Base 50): 419.5 (as of June 1)
Accumulated Growing Degree Days (Base 30): 2115.5 (as of June 1)


Insects/other pests

  • Rose plume moth
  • Rose slug sawfly
  • Four-lined plant bug
  • Wooly  aphids
  • More sawflies
  • Carpenter bees



  • Apple scab
  • Sycamore anthracnose
  • Powdery mildew on ninebark
  • Brown rot of stone fruit
  • Black knot
  • Viruses



  • Poison hemlock
  • Creeping bellflower