I’m having a problem, and I think it might be alternaria. Here’s a photo:
Does anyone know if this is alternaria?
Thank you!
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It does look like it, based on what I am finding online. But should be treatable with any anti-fungal solution. You definitely do not want that hanging around when flower clusters are forming if it is.
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Sorry but it does look like that fungi. 
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I’ve not heard of it. I have now. This is what Wikipedia says about it.
Alternaria
Alternaria is a genus of ascomycete fungi. Alternaria species are known as major plant pathogens. They are also common allergens in humans, growing indoors and causing hay fever or hypersensitivity reactions that sometimes lead to asthma. They readily cause opportunistic infections in immunocompromised people such as AIDS patients. There are 299 species in the genus; they are ubiquitous in the environment and are a natural part of fungal flora almost everywhere. They are normal agents of decay and decomposition. The spores are airborne and found in the soil and water, as well as indoors and on objects. The club-shaped spores are single or form long chains. They can grow thick colonies which are usually green, black, or gray. At least 20% of agricultural spoilage is caused by Alternaria species; most severe losses may reach up to 80% of yield, though.
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Look at it under a Jeweler Loupe. 
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Never seen it before, but looks like the shoe fits.
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