The yummiest season returns to Knott’s Berry Farm this spring with the Boysenberry Festival that celebrates the flavorful berry that started it all for Knott’s Berry Farm, the boysenberry. For the first time ever, the mouthwatering festival is expanding to three weeks featuring more than 75 one-of-a-kind boysenberry inspired items, drinks and live entertainment. In honor of the boysenberry’s historic roots, which originate from Buena Park due to Walter and Cordelia Knott, April 3, 2017 has been officially proclaimed National Boysenberry Day. To celebrate the special day, Knott’s will be hosting several special activities and contests throughout the day at the park. There will be memorable photo ops, and exclusive give-a-ways for all guests.