Ground cover spreading

What I like about ground cover is the way that it covers the ground. That is, it covers the ground if the ground has been prepared carefully by digging and the addition of organic material. Also if it's watered every night laboriously with a watering can, and when the rainwater runs out, with a hose, for the nearly two months when it didn't rain. However, it's nice to see it spreading out, and it's also nice to see how it stops all the topsoil being washed away when it eventually rains. It's also convenient to be able to dump spadefulls of compost on it when the compost piles get out of hand. Thanks to the ground cover, there's now a thin layer of dark, absorbent soil taking shape on top of the clay.