Moss Invaders shows that traditional graffiti techniques aren't necessarily needed to leave your territorial mark on city streets. Although there have been more urban-friendly street art of late, such as light graffiti and reverse graffiti, living graffiti is definitely a first.
Created by Kimi Spencer and Marko Manriquez, Moss Invaders is made using laser-cut stencils. They then used a 'moss paste' to paint those shapes onto walls. Pretty unique and interesting, if you ask me.