fbpx Plant Health Care Report issue 2016-7 | The Morton Arboretum

Plant Health Care Report issue 2016-7

July 1, 2016

The scouting report of The Morton Arboretum for July 1, 2016.

PDF iconPlant_Health_Care_Report_2016_7.pdf

 

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What indicator plant is in bloom at the Arboretum?
Wild hydrangea (Hydrangea arborescens) is in bloom

Accumulated Growing Degree Days (Base 50): 1032.5 (as of June 30)
Accumulated Growing Degree Days (Base 30): 3188 (as of June 30)

 

Insects
· Japanese beetles
· Oak slug sawfly
· Two-marked tree hopper
· Columbine leaf miner
· Mystery bug on Rudbeckia
· Galls, episode 3
· Look-alike insects
· Euonymus webworm update


Diseases
· Rhizosphaera needle cast
· Septoria leaf spot
· Guignardia on Boston ivy
· Downy mildew of grapes


Weeds
· Yellow nutsedge