This is a new rose bush and I don't know what has happened to it. Any information or advice will be appreciated.
Can you give a bit more information...type of rose, what is your growing zone, full sun or part, what have you given it since you planted it?
This is only a guess--either Botrytis and bacterial blights are causing your rose's problems. As Toni said, we really need more information to narrow down the difficulty and offer an opinion on curing it. Give us a bit more information, and perhaps we can offer a bit more help.
Anne, I don't mean to be picky, but we do need to know where you are--roses act differently in different growing zones. If you are in Massachusetts, Tennessee, Minnesota, wherever, roses need different treatment. Some Miracle Gro--how much and how often? Please help us--we really want your rose to survive and thrive!
it looks like an insect issue not a disease issue. the leaf is skeletonized not burned or ruined by disease.
I agree Carolyn. If that is the case, the thing to do would be to keep observing the plant to see if you can catch a bug in the act. Of course if it is leaf miners, they are too small to observe.
AnneP, if it is insect damage, I have had good luck just by keeping an eye on the plant. You can usually catch the culprit eventually. That is, assuming the bug has not moved on to other pastures. Are you finding new damage (is there evidence the bug is still munching away)?
@Cayuga Morning Thank you. Yes, the rose looks a lot happier now. (My ride, on the other hand, just looks mildly amused.)