The scouting report of The Morton Arboretum for July 14, 2017.
Bartlett Tree Experts, Presenting Sponsor of the Plant Clinic
What indicator plant is in bloom at the Arboretum?
Queen Anne’s lace (Daucus carota) is in flower
Accumulated Growing Degree Days (Base 50): 1315 (as of July 13)
Accumulated Growing Degree Days (Base 30): 3851 (as of July 13)
- Viburnum leaf beetle update
- Head-clipping weevil
- Foliar nematodes
- Redbud leaf folder
- Galls, chapter 4
- Tar spot of maple
- Island chlorosis
- Black spot on elm