It's called Rose rossette disease. We had it on my place in Armstrong Co. a few years ago and it really knocked the MFR back but it's starting to make a comeback I've noticed this spring. I wish it would have been finished off, I hate that stuff.
boy, this is a topic I am very interested in. I was talking to a botanist the other day (he had come to look at the fine variety of invasive species that I have at my place). His own property is infested with multiflora rose also. We are hoping that the disease spreads up here ASAP. Harleynit- Where is your property (county), if I could ask? Anyone else that can give me county or more precise locations of the disease, it would be appreciated. Thx in advance.
Yes they do hang there somewhat, but not any more that a dense stand of brush/saplings. They actually seem to avoid the denser areas. Additionally, it is so dense that more useful/nutricious ground cover is displaced.