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Plant Health Care Report issue 2014-11

The Scouting Report of The Morton Arboretum for June 27, 2014.

Plant_Health_Care_Report_2014_11

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What indicator plant is in bloom at the Arboretum?
Elderberry (Sambucus canadensis) is in full bloom


Accumulated Growing Degree Days at The Morton Arboretum
Accumulated Growing Degree Days (Base 50): 882.5 (as of June 26)
Accumulated Growing Degree Days (Base 30): 2560.5 (as of June 26)


Insects

Japanese beetles
Sycamore plant bug
Leafrollers
Galls again

Diseases

Downy mildew on Rudbeckia
Black spot on rose
Witchhazel leaf spot

Miscellaneous

Slime mold and stinkhorns
Giant hogweed or cow parsnip?