Be an Urban Hero! Help plant and care for trees in your region, your community, or your yard by becoming a PHS Tree Tender. The PHS Tree Tenders® program offers hands-on tree care training for residents of the five-county Philadelphia region. The training covers tree biology, identification, planting, proper care, and working within your community. Available for ISA credit. This two-part series meets on Saturday January 26 and February 2 from 8:30 am - 1 pm.