The Green Thumb Challenge is a youth gardening initiative started by the Green Education Foundation to plant 10,000 gardens nationwide. It aims to connect youth to nature through hands-on gardening, provide standards-aligned curriculum, and address issues like childhood obesity and hunger. The Challenge partners with organizations like Cub Scouts and Boys & Girls Clubs of America. It provides resources for starting a turn-key garden and encourages participants to donate produce. The pilot involved six sites and received positive press coverage. The initiative hopes to award grants and involve more youth in gardening projects.