fbpx Plant Health Care Report issue 2019-3 | The Morton Arboretum

Plant Health Care Report issue 2019-3

May 3, 2019

The scouting report of The Morton Arboretum for May 3, 2019.


PDF iconPlant Health Care Report issue 3 for 2019 (PDF)


Quick View

What indicator plant is in bloom at the Arboretum?
Eastern redbud (Cercis canadensis) is in early flower


Accumulated Growing Degree Days (Base 50): 70 (as of May 2)
Accumulated Growing Degree Days (Base 30): 862.5 (as of May 2)



Insects/other pests

  • Pine bark adelgid
  • Spruce needleminer
  • Elm flea weevil
  • Larch casebearer
  • Spring is a little late
  • Eastern tent caterpillar
  • European pine sawfly
  • Gypsy moth



  • Boxwood browning
  • Cedar apple rust
  • Phomopsis tip blight



  • Bishop’s weed



  • Wise Use of pesticides


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