I bought this plant from UBC famous spring sales, now ended, back in 2011. It is planted under a Japanese maple to the north of our house. Over time the maple has grown immensely and the neighbor has planted trees also shading our garden. I want to transplant the diminishing Dichroa to a more open bed, with open shade but not much direct sunlight. When can I do this? Now? It looks like there is more dead wood than live wood on it now.