Answer: Unfortunately, based on your description, I am not sure what has happened to the foliage on your roses. Sometimes deer will eat the foliage without damaging the canes, so that might be a culprit. I would suggest you consult with your county extension and/or your local professionally trained and certified nurseryman and see if they can help you troubleshoot. If there is a localized pest problem prevalent in your area they should be aware of it. I'm sorry I can't be more specific for you.
Q&A Library Searching Tips