Pothole gardener's Christmas display
18 December 2012 Last updated at 01:14 GMT
Steve Wheen has spent the last four years searching out potholes on London's streets, which he fills with miniature garden displays.
The "guerrilla gardener" says he wants to bring "moments of happiness" to anyone who stumbles across one of his creations.
Here, he shows BBC News how to make a Christmas-themed pothole garden.
Video journalist: Dan Curtis