Rootstock from a rose
I've got what appears to be some rosa multiflora leaning against the air conditioner condenser, blooming away. I moved a lovely, unnamed rose that I bought at the Botanical Gardens rare and unusual plant sale about five years ago. It was from a nursery in Java that no longer exists, and was simply labled "old-fashioned rose". Another tag inside was so smudged it was unreadable. Anyway, when the old a/c unit died, the new one had to be relocated into the flower bed to meet code. I moved the rose to a bed by the fence, where it's thrived. A little of the root must have been left behind, and apparently this rose is decidedly NOT own-root. I left it in the ground, as the leaves look similar. They're a dull gray-green. The roses are white singles that look like maybe (I stress maybe) rosa multiflora. It's actually kind of cute. Any harm in leaving it there? It's certainly healthy looking, incredibly well-leafed and blooming away for the first time ever.
Also, I've got a lovely J&P rose in the same bed some three feet away. It's a pink HT, forget the name. It's got a very regular HT bloom to it. This year it died down a bit. There are presently two pink blooms on it and one white bloom. Is the white a sport? It's very pretty, looks just like the pink one but in white or very very pale pink. It doesn't seem to be sucker growth, and J&P usually, to the best of my knowledge, used Doc Huey for rootstock about five years ago when I bought the poor thing. Usually my roses look like what they're supposed to. Help!