The scouting report of The Morton Arboretum for April 27, 2018.
What indicator plant is in bloom at the Arboretum?
Corneliancherry dogwood (Cornus mas) is in full flower
Accumulated Growing Degree Days (Base 50): 19.5 (this is as of April 25)
Accumulated Growing Degree Days (Base 30): 587.5 (this is as of April 25)
- Spring is a little late
- Eastern tent caterpillar
- European pine sawfly
- Gypsy moth
- Cedar apple rust
- Bishop’s weed
- Wise use of pesticides
Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic