http://www.parkvisitor.com/odwalla/

The Odwalla Plant a Tree Program is available May 15, 2008 through December 31, 2008. Choose which participating state park system (CA, NY, FL, CO, UT, OH, PA or TX) will receive a tree each time you click. Each family can donate up to five trees under this Program. Participants pay no money under this program. The donated trees will be paid for by Odwalla, Inc. up to $50,000 worth of trees.