Rick Richardson, owner of Planter Box Tree Nursery, assists third grade Super Kids at Hermosa Elementary School as they plant a cedar elm tree Thursday on the playground. “If you plant just one tree it will absorb the amount of carbon dioxide one person emits during his or her lifetime,” said Richardson. He said during the first few years of a tree’s life it is extremely important to water it thoroughly. “If you give it the water it needs and don’t run over it with your bike or a lawnmower, it will grow,” said Richardson. Each student pitched in 50 cents to purchase the tree.