I did a search on "rose hedge" and "aquarium" and no aquatic plant references turned up. I could find no references to it in Kasslemann's "Aquarium Plants". either.
If your plant is really a terrestrial plant - and LFS's have been known to sell those as aquarium plants - all the care in the word will not keep it alive underwater.
I suggest that you ID it (maybe using the Tropica site, which has a lot of pictures) and if you can't find a positive, plant it outside in your garden and move on.