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