Disease ID question

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Disease ID question

Post: # 70185Post jbergeson
Sun Aug 04, 2019 6:49 pm

A customer and former neighbor of mine gave me these pics, wondering what is wrong with her Morden Centennial.

It really doesn't look like blackspot. Very soft yellow spots, looking just like they're blurry.

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Posts: 5139
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: Disease ID question

Post: # 70190Post roseseek
Sun Aug 04, 2019 10:18 pm

I'd first check for any sucking insects on the undersides of the foliage. It doesn't appear to be a disease nor does it look like anything I have ever had diagnosed as viral.
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

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