I can't seem to stop my rosemary from going brown. It has very little green left on it. I have it sitting in my patio window and it gets midday to afternoon light and I believe that when I bought it, it was starting to suffer from root rot. I really like the smell and cooking with this plant. Is there an way I can save it or is it done? It's 99% brown and dry looking. I have basically stopped watering it and drained out the water in its pot but it has a bottom that retains water. I think I have inadvertently killed it. I just want to know if I can save it, or can I put it in coconut shavings for orchids?