I Have Several Double Knock Out Roses
The leaves on the new growth started curling up & looks like something is stinging them. I have sprayed with a fungicide & pesticide. What else can I do?
It might be rose rosette disease, see this article: https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-rosette-disease.htm
Another culprit could be spider mites: https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-spider-mites.htm
Well without knowing more info,just from what i read this could possibly be overfertilization, sorry wish i could be more helpful.