The scouting report of The Morton Arboretum for April 7, 2017.
Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic.
What indicator plant is in bloom at the Arboretum?
Cornelian-cherry Dogwood is in late flower (Cornus mas)
Accumulated Growing Degree Days (Base 50): 33.5 (as of April 6)
Accumulated Growing Degree Days (Base 30): 683.5 (as of April 6)
- Using growing degree days
- Timing use of fungicides
- Winter weather
- Crabgrass preventer
- Egg masses and more
- Azalea bark scale
- Hemlock needleminer
- Boxwood leafminer
- Jumping worms
- Boxwood blight (NEW DISEASE FOR ILLINOIS)
- Cedar rust
- Volutella blight on pachysandra