My 10 year old Red Robin is the focal point to my garden. About 15ft tall and is usually stunning. Since the snow and storms earlier this year the leaves have gone brown and crisp. There are no spots on the leaves. I have watered and fed and there is no new growth this year. Should I leave it and see how it goes or give up and chop in down. Don't really want to but I have a feeling you will tell me its dead.