D.C. GREEN FESTIVAL: Featuring cooking demonstrations, workshops and organic food exhibitors. 10 a.m.-7 p.m. Sunday, 11 a.m.-6 p.m. $15 ($10 in advance); $25 for both days ($15 in advance). Walter E. Washington Convention Center, 801 Mount Vernon Place NW. www.greenfestivals.org.
FARM-TO-TABLE DINNER: Four-course dinner featuring food cultivated and produced on the estate. Includes reception and tour. 6:30-9:30 p.m. $175, including tax and gratuity. Mount Vernon, 3200 Mount Vernon Memorial Hwy., Alexandria. 703-780-2000. www.mountvernon.org.
HARVEST DINNER: Five-course meal featuring locally grown and foraged food. A portion of the proceeds benefits the Rappahannock County Farm Tour. 5 p.m. $95, including tax, gratuity and a Rappahannock County Farm Tour ticket. Stonyman Gourmet Farmer, 337 Gay St., Washington, Va. 540-675-2005. www.stonymangourmetfarmer.com.
RAPPAHANNOCK COUNTY FARM TOUR: Self-guided tour of almost 20 sites, including farms and wineries. 10 a.m.-5 p.m. Sunday, 10 a.m.-5 p.m. $5. 540-675-3153. farmtour.visitrappahannockva.com.
TASTE OF FRIENDSHIP HEIGHTS: Featuring samples from a dozen local restaurants. Noon-5 p.m. Food and drink tickets $5 for four tickets (no item will cost more than three to four tickets). Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase. 301-656-2797. www.tasteoffriendshipheights.com.
TEA TASTING: Learn and taste the differences between white, green, oolong, black, puerh, scented and blended teas from a variety of growing regions. Includes tea history and tea trivia with tea snacks. 1-3 p.m. $25. Forestville Schoolhouse, 9812 Georgetown Pike, Great Falls. 703-759-2771. www.greatfallsteagarden.com.
WINE AND CHEESE FESTIVAL: Samples of cheese and more than 50 wines from around the world. 3-7 p.m. $75; $50 in advance. Assaggi Osteria, 6641 Old Dominion Dr., McLean. 703-918-0080. www.assaggiosteria.com.
WINE TASTING: Open house-style tasting featuring at least 20 Spanish wines. 2-4 p.m. $25. Grape + Bean, 118 S. Royal St., Alexandria. 703-664-0214. www.grapeandbean.com.
CHOCOLATE 101: Rob Kingsbury of Kingsbury Chocolates and Confections talks about chocolate making and leads a wine, cheese and chocolate pairing. 7 p.m. $45. Cheesetique, 2403 Mount Vernon Ave., Alexandria. 703-706-5300. cheesetique.com.
CRAFT BEER AND FOOD TRUCK FEST: Featuring more than 50 craft breweries and 10 area food trucks. A portion of the proceeds benefits Move for Hunger. Noon-5 p.m. $59. Half Street Fairgrounds, 1299 Half St. SE. www.livingsocial.com/adventures/398846-livingsocial-s-beerfest.
FOOD LECTURE: Slow Food D.C. hosts Sally Fallon Morell, author of the “Nourishing Traditions” cookbook, who will talk about healthful traditional diets. RSVP to firstname.lastname@example.org. 4-6 p.m. Free. Metropolitan Community Church, 474 Ridge St. NW. www.slowfooddc.org.
WINE TASTING: Featuring wines from Newton Vineyard paired with tapas. 5:30-6:30 p.m. $28, not including tax and gratuity. Cafe Dupont, 1500 New Hampshire Ave. NW. 202-797-0169. 202-483-6000.
ARMENIAN FOOD FESTIVAL: Featuring traditional Armenian fare. 11 a.m.-3 p.m. Thursday, 11 a.m.-3 p.m. Friday, 11 a.m.-3 p.m. and 5-9 p.m. Saturday, 11 a.m.-9 p.m. Free. St. Mary Armenian Apostolic Church, 4125 Fessenden St. NW. 202-363-1923. www.stmaryaac.org.
BEER DINNER: Four-course meal featuring Heavy Seas Beer. 7 p.m. $55, including tax and gratuity. Clyde’s of Columbia, 10221 Wincopin Circle, Columbia. 410-730-2829. www.clydes.com.
SEND NOTICES to: To Do, Food, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071, or e-mail email@example.com, 14 days in advance.