Money doesn't grow on trees, but that doesn't stop a group of renegade agriculturists from turning public trees into a provider for bountiful harvest by grafting fruit-bearing branches.
Meet the Guerilla Grafters:
What makes them guerrillas is the fact that this grafting is illegal. As the group’s Tara Hui explains, “people think of fruit trees as kind of a nuisance.” That’s both because of the mess they might create in the form of rotten fruit and the vermin they might attract in the form of rats. Depending on the species you’re using, grafting might also run afoul of patent law. The Guerrilla Grafters address the first two problems by making sure each grafted tree has a “steward” who can monitor and take care of it.
Andrew Price wrote the article on Fast Company: Link