I planted this last fall and it looked great this spring, even grew some new leaves. It stayed green over the winter. But the past month I have noticed its stems turning a yellow/brown color and some leaves falling off. I thought it just needed more water, but I have been watering it everyday with water from my fish bucket and it still looks puny. I have a sneaky suspicion it is slowly kicking the bucket. Is there anything I can do? It is planted under a large Hemlock tree. It does not get any real direct sun, but it does get some bright light. Any tips will be appreciated!