Enrico Saunders, Grade 12, and eight other students in the Take a Hike Youth at Risk Foundation program, plants one of 550 alder trees to reestablished Kanaka Creek Regional Park boundaries along 110th Avenue on Tuesday. They did so as part of the Teens 4 Trees initiative, which, since 2009, has raised $60,000, sold 7,888 trees, and planted 6,631 of them.