The scouting report of The Morton Arboretum for May 1, 2020.
What indicator plant is in bloom in Dupage County? I have 3 separate reports of this flowering in Dupage and Cook Counties.
Korean spice viburnum (Viburnum carlesii) is in flower
Accumulated Growing Degree Days (Base 50): 65 (as of April 30)
Accumulated Growing Degree Days (Base 30): 947 (as of April 30)
- Spring is weird (again)
- Eastern tent caterpillar
- European pine sawfly
- Gypsy moth
- Viburnum leaf beetle
- Cedar apple rust
- Cytospora canker
- Rhizosphaera needle cast
- Creeping bellflower
- Wise use of pesticides