Our idea was not to recruit expensive human donation collectors, but an entirely new breed of "activist", who would happily work the streets around the clock for free and who was a very natural and convincing advocate for OroVerde's message: Trees.

More than 600 "volunteering trees" were recruited all over Germany. Cash donations rose by 27.4 %. And the tropical rainforest foundation OroVerde, formerly known only to insiders, enjoyed a wave of public interest.