Anarchist art group, the space hijackers had a simple idea: plant ivy and other climbing plants in the forgotten corners of city buildings, then sit back and watch as nature does it’s magic and turns the city into a green jungle. Operation Ivy League
storiesfromspace.co.uk also has a recipe for Moss Graffitti; Guerilla gardening has more stuff.
18 Saughton Mains, no more! 