The Boston Natural Areas Network, an affiliate of the Trustees of Reservations, will hold a class on Saturday, June 28 from 10 – noon at City Natives, 30 Edgewater Drive in Mattapan, entitled Grow and Preserve Herbs. Herbs are easy to grow and provide instant flavor to any meal. Learn how to grow some of the most popular herbs and preserve them through freezing, drying or steeping in vinegars and oils. Registration required by contacting 617-542-7696 or info@bostonnatural.org.  Image from University of California Sonoma County Extension.