The phrase "green ribbon" refers to a strip of fabric or material that is colored green. It can symbolize various things such as support for environmental causes, mental health awareness, or peace. Full definition
Or tie red and green ribbons around wine glasses that you already have. (fieryfoodscentral.com)
All dogs that have received a qualifying score in their class receive a dark green ribbon to indicate that they have earned a «leg,» or qualifying score toward their title. (ackcsc.org)
Simply wrap a foam wreath form in solid green ribbon, and then add a smaller, complementary ribbon on top. (diynetwork.com)