This Old House landscape contractor Roger Cook shows how to water your lawn and garden—automatically. (See below for a shopping list and tools.) SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Shopping for How to Install In-Ground Sprinklers: - 1-inch-diameter polyethylene pipe [https://amzn.to/2Vak5UU] and assorted fittings [https://amzn.to/2VQJqaZ], for delivering water to the system - 3/8-inch-diameter flexible pipe…