One of the fascinating things about texture is how it interacts with light. Locally, in winter the mosses and barks take center stage, due to the low angle of the sunlight and lack of dramatic competition. In the other seasons they are just a backdrop for the brighter foliage and flowers.
I especially like how the mosses seem to magnify light. They often seem like they are emitting it instead of catching and reflecting, sort of like the full moon.