Celebrate Arbor Day at Tower Hill Botanic Garden in Boylston, Massachusetts.  The first twenty five first time visitors will receive a free tree sapling.  Tree plantings and tours will occur each day at 2 pm.  The Gift Shop will be having a 20% off sale on everything they carry.  On Saturday, at 1 pm, there will be a magnolia lecture, and arborist Joe Biagioni will give pruning demonstrations on Friday and Sunday at 1 pm.  Also there will be a variety of children’s activities.  For more information and directions, log on to www.towerhillbg.org.