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Thanks to a loose address number, a layer of synthetic grass is accidentally installed on the Stephenses' front lawn. Upon arriving home, Darrin thinks that Sam created the grass via witchcraft, and a battle royal ensues. The couple's argument spreads like wildfire throughout the neighborhood, especially when Bill McLain (Richard X. Slattery) accuses Darrin of "stealing" the plastic grass meant for him. Written by Ed Jurist, "How Green Was My Grass" first aired on February 29, 1968.