From strawberries and asparagus in the spring to corn and tomatoes all summer then pumpkins and gourds in the fall, Great Country Farms offers a farm experience your whole family will enjoy. They offer a Farm Animal Barnyard, a large Kid Corral play area with mazes and slides, hayrides, Lil' Farmer Barnyard tot-only play area, an ABC garden, and a country store with sodas and snacks.
If your kids get tired of seeing all the monuments and museums in DC, you might want to give them a break and take them on a fruit picking excursion.
Great Country Farms has a variety of fruits and vegetables to pick from asparagus to potatoes, peaches to strawberries. They've got great events like the family harvest in the fall. Our kids loved the pig racing event.
We don't buy a lot since we're usually just visiting the area, but it's always a fun way to add some fresh fruit that's picked by your own hands into the usual burgers and fries travel menu.