I have a Nerium oleander in a pot on my decking, it gets full sun for most of the day and last year it seemed very happy there. However, I've noticed it's not looking very healthy now - the leaves are sort of dull and patchy it and doesn't look like it's producing much in the way of flower buds.
After a bit of research I think it's probably frost damage as I left it out all winter - I live in Devon and it was fairly mild but we did have the odd few nights under zero s maybe I should of brought in indoors?.
Could anyone tell me how I can bring it back to health and flowering well again next year? Do they need much water, especially since it's potted? I'll try and remember to bring it inside this winter for a start!