Plant Disease Clinic Update - June 6, 2007

Samples with the following problems have been seen in the Clinic lately:


Anthracnose on raspberry

Ascochyta leaf blight on turfgrass (see this week's article)
Cedar-apple and cedar-hawthorn rust on cedar

Environmental stress on maple and spruce

Environmental tattering on maple
Fire blight on apple
Herbicide injury on various plants
Mite injury on spruce
Rust on ash
Tar spot on maple
Tatters on oak and hackberry
Thick thatch problems on turfgrass


A raspberry sample with anthracnose, causing purple lesions on the canes.


A raspberry sample with anthracnose, causing purple lesions on the canes.

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