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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

 

Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic.

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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

 

Diseases

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

 

Weeds

  • Poison hemlock
  • Creeping bellflower