Guilford County Parks invites volunteers to join "The Big Pick," the annual grape harvesting event at the Guilford County Farm, located at 7315 Howerton Rd., Gibsonville. This year’s event will take place on two Saturdays, Sept. 27, and Oct. 4, from 9 a.m. to noon, offering an opportunity for volunteers of all ages to come together and support local food banks and shelters.Last year, more than 200 volunteers came out to help, harvesting over 2,500 pounds of muscadine grapes.