Pocantico Hills: Winter on the Farm Weekend. Shop our holiday vendor market featuring local artisans on Dec. 10, and visit our winter farm market on Dec. 11. Both days will feature wintery farm activities and crafts for families and children, along with seasonal tastings and recipe ideas (and ingredients) for your holiday table. Events range in price from no charge to $30. All programs, unless otherwise noted, require online registration at www.stonebarnscenter.org. 10 a.m.-3 p.m. Stone Barns Center for Food & Agriculture, 630 Bedford Road. 914-366-6200, Ext. 118.
Harrison: Greater Westchester Orchid Society Meeting. A speaker on a timely topic relative to orchids, a show table with plants in bloom grown by members of the society, refreshments. Regular monthly meeting; call to confirm. Free. 7 p.m. Harrison Community Center, 216 Halstead Road. 914-528-3028.
New Rochelle: Garden Club of New Rochelle. Business meeting followed by a Christmas social and display of decorated baskets for the visiting nurses. Free. 2 p.m. Elks Lodge, 19 The Boulevard. 914-630-0111.
Cos Cob: Christmas in the Hudson Valley. Join us for a private guided tour of Van Corlandt Manor and Washington Irving’s home, Sunnyside. Both of these historic homes will be decorated for the holidays. Lunch will be at a nearby Zagat-rated restaurant. Depart at 9 a.m., return: 4 p.m. Cost: members $135, nonmembers $165. 9 a.m.-4 p.m. Garden Education Center of Greenwich, 130 Bible St. 203-869-9242.
Cos Cob: Festive Holiday Floral Arrangements with Miriam Landsman and George Von tobel. Bring clippers. Cost: members $85, nonmembers $100. 10 a.m. Garden Education Center of Greenwich, 130 Bible St. 203-869-9242.