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Plant Health Care Report issue 2014-11

June 27, 2014

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

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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)


Japanese beetles
Sycamore plant bug
Galls again


Downy mildew on Rudbeckia
Black spot on rose
Witchhazel leaf spot


Slime mold and stinkhorns
Giant hogweed or cow parsnip?