Warty Bayberry lost its color
Two years ago I purchased a beautiful flaming crimson and bronze barbery. Although the leaves were really thorny (like a holy) it was so gorgeous, I couldn't resist. So I put it in a container to be displayed on my patio during the fall. After that first fall, the leaves have never been that crimson/bronze color. It looks healthy enough though slow growing. It's just a thorny, dangerous plant. Does anyone know how I can get the color to come back. It's this plant's only redeeming quality.