Oregon Fruit Products OnLine. Location of their products is also available.
Page includes jam recipe.
Rudolph Boysen is credited for developing this berry, which was introduced in the 1920s. It was the result of blackberry, raspberry, and Logan crosses. Freezing Of Mechanically Harvested Boysenberries. And Residue In Boysenberries. The Anthocyanin Pigments Of Boysenberries.