| United States, Canada, England|
United States of America, Canada, England
Berry, Rhubarb pie, Boysenberry, Blackberry pie, Blueberry pie
Bumbleberry pie originated in Western Massachusetts. It is made of at least three kinds of berries, but generally refers to a mixed-berry pie, as there is no such berry as a "bumbleberry". This pie often also contains apple and/or rhubarb. Berries commonly used in this pie may include blueberries, raspberries, strawberries, blackberries.
Bumbleberry pie Wikipedia