Volunteers are needed to help plant native species and clean along the Menomonee River at Hart Park. Meet inside in the Muellner Building at Hart Park at 9 a.m., Saturday, April 21, 2012. Bags will be supplied. Please bring gloves, shears, and any supplies that you think will be beneficial for the clean up. Visit the Milwaukee Riverkeepers at http://www.milwaukeeriverkeeper.org to register.