The volunteers we work with provide the work to get the projects done, they are the ones who actually get the trees in the ground and the mulch spread. Some volunteers we see only once, coming out on a wintery day plant trees. But many volunteers will show up over and over again at tree plantings or at educational events. We have benefited from working with volunteer groups from Hewlett Packard Sustainability Group, Rotary, REI, neighborhood associations, local high schools, and colleges, churches, and scout programs.