Hello, I wonder if anyone could help me. I am quite a novice gardener. We've had a patio rose for nearly two years now. Last year it flowered continually throughout most of the summer. We gave it some manure earlier on in the spring, but now it isn't looking happy at all. The leaves are turning mottled and yellow and are starting to fall off. I can't see any flies or bugs. We have looked underneath the pot and can't see it's roots pushing through either. We did put it in a bigger pot last year. Any thoughts or advice would be greatly appreciated.