Seattle Hempfest is held the third weekend in August each year. The next Seattle Hempfest is August 19-20-21, 2011,.
It’s open to the public on Friday from 12 noon to 8 pm, and on Saturday and Sunday from 10 am to 8 pm. Admission to Seattle Hempfest is free.
The event spans three Seattle waterfront parks: Centennial Park, formerly Elliott Bay Park (North Entrance), Myrtle Edwards Park, and Olympic Sculpture Park (South Entrance).