10:00am-11:30am. Discover how to create a buffer garden that helps protect the Bay from runoff and also benefits wildlife. Learn what a buffer garden is, how big it should be, how to get started establishing one and what to plant. Presenters: Karen Anderson, MG/MN and Melanie Crowder, MG. While learning about buffer gardens, visit the Smithsonian Water/Ways exhibit at the library. Calvert Library Prince Frederick, 850 Costley Way, 410-535-0291 or 301-855-1862. CalvertLibrary.info.