A few months ago we laid a sedum roof on our warehouse. After a shaky start when the grass appeared to be winning, it is now a blaze of yellows, whites and pinks.
If you have a flat or pitched felt roof, adding a blanket of sedum is a great way to add a bit of colour and to help the environment. If you don't have a suitable roof, but you fancy a bit of sedum, you could try a sedum birdbox. This is a classic birdbox made from pine offcuts, with a roof tray filled with the same sedum plants we have on our roof. And its just as beautiful.