Now I see why nursery gave it to me for free.. out it goes, not wasting water or energy on it. Thank you all!

I rashly bought this rose a few years ago because I love striped roses even though I knew it was very prone to blackspot. It was a disaster in the garden, losing all its leaves in June and remaining that way for the duration of the season with hardly a single further bloom. So I potted it in a 20lt pot and placed it against a sunny wall with a large 2m x 1.5m sheet of glass covering it, scavenged from a neighbour who had their conservatory rebuilt. It grew only very slightly better despite a lot of love and care and feeding. But, what was interesting was that behind glass the stripes retained their strong purple colour but the light mauve back ground colour changed to pure white. I have plenty of land and don't often get rid of plants, there is always some corner where they can be tucked away but this rose I think is going to be relocated to the bonfire.