Fruits form an important part of a healthy diet. You probably think you know all facts about Boysenberry. But there are some compelling details about this fruit that are still unknown to many of us. Keep reading to learn about unique Boysenberry facts and its storage methods, production, use in alcoholic beverages, etc. This fruit belongs to Low Calorie Fruits category. Some of the Interesting facts about this fruit are: Boysenberries are a cross between raspberries, blackberries, and loganberries.