Guerilla Gardening "encourages gardening without boundaries and seeks to provide inspiration through an exchange of ideas and experiences from guerrilla gardeners around the world and those seeking to become one. Whether you're making a place more beautiful, more edible, more fragrant, more bio diverse, more friendly, more thought provoking or all of that what we have in common is gardening without boundaries".
It was initiated by social movement activists and encourages people to participate through protest & direct action. Guerilla Gardening is local and global in orientation and concerned with environment & sustainability and neighbourhood & community.
It was launched in 1973 and is ongoing.