These are just some mdf bases that I chambered the edges on. I added some gule and sand. gave it a bit of paint and then stuck on some of these little grassy tufts with stones and flowers (I bought them from Eureka on my last visit). The came up pretty nice.
The shed is a HO scale railway terrain kit. It looks the part, although I think it was supposed to be some sort of railway control building. Whatever... It looks like a shed to me.