Free to County residents. Offered by Western PA Conservancy & Penn State Extension. Includes tree biology, urban stress on trees, tree identification, tree pruning & root care, tree planting techniques & community organizing. Designed for lay people & experts alike! To register contact Alicia Wehrle at awehrle@paconserve.org or 412-586-2386.Breakfast & lunch provided. For childcare or ride assistance contact Alicia by Sept.7.