Knockout Rose knocked-out!

[The Zen Master]

Any ideas why my Knockout Rose stopped making roses and looks like this, or what I can do about it?

Thanks in advance!

 

[Chuck]

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.

 

[The Zen Master]

Will do, Chuck. Thanks again for all your help!