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