My scroll through "tree" on the DLS led to a collection of various sizes of "winter tree" with names beginning with "JVC~(Tr-19 winter)Tree", for TS2009, by jankvis. One of them might come close to what you're looking for. Also, I think many of the non-billboard "real" or "speed" trees lose their leaves when you set the season calendar to a winter (or "first few days of spring") date?