It’s a good rule for sustainable gardening: Let nothing leave the site. Join the New England Wild Flower Society’s horticulture staff at Garden in the Woods on Saturday, January 27 from 1 – 4 to learn how your existing landscape materials, from downed wood to running water and plant debris, can provide free food, water, and soil. $40 for NEWFS members, $48 for nonmembers. Photo from www.andrewsforest.oregonstate.edu.  Register online at http://www.newfs.org/learn/our-programs/nothing-leaves-the-site