May 24, 2013
The Scouting Report of The Morton Arboretum for May 24, 2013.
What indicator plant is in bloom at the Arboretum?
Black locust (Robinia pseudoacacia) is in bloom
photo: John Hagstrom
Accumulated Growing Degree Days (Base 50): 303.5 (as of May 23)
Accumulated Growing Degree Days (Base 30): 1294.5 (as of May 23)
- Rose slug sawfly
- Oak leaf roller
- Galls, galls, galls
- Rose plume moth
- Ash anthracnose
- Golden canker