Knock out roses
I would like to know if someone could identify an issue with my knockout roses. I have pics that I could send. I have seen articles describing yellow leaves and black spots on leaves but my leaves are just turning brown. The bushes are blooming but do not look healthy. I have several bushes some are doing better than others.
Treatment with an insecticidal soap or Neem Oil is recommended.
Try watering around the base of the rose and not down into the crown.
These links have more information.