The Boston Natural Areas Network, an affiliate of The Trustees of Reservations, will offer a workshop on Saturday, June 21 in two locations.  From 10 – noon, the class will take place at the East Boston Branch Library, 365 Bremen Street, East Boston, and from 2 – 4 at the Mattapan Branch Library, 1350 Blue Hill Avenue in Mattapan.  Learn to plant in succession, manage weeds and pests, water wisely, and plan for saving your own seed.  Program is free.  Registration required by calling 617-542-7696 or emailing info@bostonnatural.org.