Blackberry and Boysenberry belongs to the same family and class. Boysenberries are considered to be a cross section between blackberry, raspberry, and loganberry. On the other hand, Blackberries are considered genuine berries, which are smaller and sweeter than boysenberries.
How were boysenberries created?
A family friend, Anaheim Parks Superintendent Rudolph Boysen, had experimented with a new strain of berry, but the plants kept dying on the vine. Walter took the scraggly plants, nurtured them to health and named the new berry—a cross between a raspberry, a loganberry and a blackberry—”boysenberry,” after his friend.
Are mulberries and blackberries the same thing?
On the other hand, Blackberry is a perennial plant, which is seen in South American and temperate Northern hemisphere. While Mulberries belong to morus genus, moraceae family, the Blackberries belong to rubus genus and rosaceae family. Well, Mulberries are not considered genuine berries though they are said so.