Our roses developed dark, spikey shoots last year. These did not look normal. We cut the bushes back in the Fall. We are seeing dark, spikey shoots appear again. Should we be concerned or just keep pruning them off?
Have you looked at pictures of rose rosette disease? This is where I would start in trying to figure out what is wrong. If it turns out not to be RRD, please write again and post a picture of the new growth. This is a website dedicated to rose rosette disease: https://roserosette.org