Help please :(
Hi, I am not a gardener. Im afraid i dont even know the name of the plant in the attached photos. I have a few outdoor plants and I was really happy last year as this one seemed to prosper. I knew there was frost coming and so I put the plant into a greenhouse since the end of Nov, on the advice of a friend. I checked it not long ago, and it looked to be doing fine. Today I have checked on the plant again and there seems to be some kind of rot or disease on the plant. I was hoping an experienced gardener would be so kind as to give me some advice as to what the issue is and if this is salvagable or not please?