Turn unwanted kitchen scraps into a rich fertilizer for your plants when the staff at the Lyman Estate Greenhouses, 185 Lyman Street in Waltham,  teaches you how to set up a home composting bin. Topics covered include choosing the right bin, feeding and maintaining your worms, and harvesting your black gold fertilizer. The program will take place Thursday, June 9, from 10 – noon, and costs $20 for Garden and Landscape members, $25 for Historic New England members, and $35 for nonmembers.  To register, call 781-891-1985, or log on to www.historicnewengland.org.