High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Knott's Berry Farm is the brand name of two separate entities: a theme park in Buena Park, California, and a manufacturer of food specialty products (primarily jams and preserves) based in Placentia, California. The theme park is owned by Cedar Fair Entertainment Company which has made a deal to be acquired by an affiliate of Apollo Global Management, and the food specialty business is part of The J. M. Smucker Company.In the 1920s, Walter Knott and his family sold berries, berry plants and pies from a roadside stand beside State Route 39, near the small town of Buena Park. In the 1930s, Walter Knott was introduced to a new berry which had been cultivated by Rudolph Boysen. The plant was a combination of the red raspberry, blackberry, and loganberry. Walter planted a few plants he had received on a visit to Boysen's farm, and later started to sell them at their roadside stand. When people asked him what they were called he said "boysenberries".