Following an explosion of farmers markets around the country, the East End will play host to four different farmers markets this year. Building on last year’s successful pilot season, the Sag Harbor Farmers Market will move to the stonewall-enclosed lawn behind Christ Church on Madison Street and Route 114, and run from 10 a.m.1 p.m. on Saturdays, from June to November. It will again feature produce, cheese, jams, baked goods, honey, and seafood from East End producers. A new Westhampton Beach farmers market will run from June 4th to November 19th, every Saturday from 8 a.m.noon, at the Westhampton Beach Parking Lot on Mill Road next to the Historical Society. “The Farmers Market will be a happy place for our citizens to gather,” said organizer Elsie Collins, owner of the 1880 House B&B. Several Shelter Islanders are also trying to launch a Friday evening market at the Veterans Hall there. The Riverhead Farmers Market opens every Thursday, 11 a.m.4 p.m., June to October, in the village parking lot on Peconic Avenue.