fbpx Plant Health Care Report issue 2020-7 | The Morton Arboretum

Plant Health Care Report issue 2020-7

June 26, 2020

The scouting report of The Morton Arboretum for June 26, 2020.

PDF iconPlant Health Care Report issue 7 for June 26, 2020


Quick View

What indicator plant is in bloom in Dupage County?
Elderberry (Sambucus canadensis) is in flower

Accumulated Growing Degree Days (Base 50): 909 (as of June 24)
Accumulated Growing Degree Days (Base 30): 2839 (as of June 24)


Insects/other pests

  • Japanese beetles and white grubs
  • Viburnum crown borer
  • Tarnished plantbug
  • Milkweed beetles and bugs
  • Tussock moths
  • European elm flea weevil
  • Galls, Chapter 2



  • Cedar-quince rust on serviceberry
  • Tar spot on maple-early stage
  • Rust on ash




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