Knockout Rose knocked-out!


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Cedar Creek, TX
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Any ideas why my Knockout Rose stopped making roses and looks like this, or what I can do about it?
Rose 01.jpg
Rose 02.jpg


Thanks in advance!
 
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Tarpley Tx
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Any ideas why my Knockout Rose stopped making roses and looks like this, or what I can do about it?View attachment 56641View attachment 56642

Thanks in advance!
I'm not much on non-edible plants but I would say it's one of two things. Either overwatering or a fungus. I think I can see little black spots on the leaves but I can't see if they have a little yellow halo around them or not. What I would do is spray the plant with Neem Oil late in the afternoon or early in the morning. Then I would make a batch of cornmeal tea and spray that about 3 days from now. I would also sprinkle the dry whole ground cornmeal around the base and on the leaves. The fungus, if that's what it is, looks like the beginning of Black Spot Fungus. I think I also see blackened stems in the background, another sign of a fungal disease.
 
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