Celebrities love to be green! Whether they’re attending an Earth-inspired event (like FOX’s funny girls Hannah Simone and Mindy Kaling did at Grades of Green’s 2013 Verte) or getting down in the dirt to plant trees (like Amy Smart and Emmanuelle Chriqui), showing their love for the planet is a year-round priority . Click through the gallery to see which organizations have them excited about Mother Nature.