In my back garden I have an old sundial which I bought over twenty years ago when I first moved in to my house. Most folk might scrape or scrub off the lichen and moss which grows on it, but I love the effect it gives. It gives it more of a rustic charm, and it kind of has its own micro ecosystem going on atop of it. This is Wall Screw-moss (Tortula muralis) in extreme close up at the limit of my macro lens, and it is often found growing on old walls, concrete and roof tiles, including base-rich rocks. It kind of reminds me of a miniature forest, with trees, shrubs and grasses. Please click images for higher quality resolution.
January 2017, rear garden, Staffordshire. © Pete Hillman 2017. Camera used Nikon D7200 with Sigma 105mm macro lens.