Bokbunja

Rubus coreanus, known as bokbunja, Korean blackberry, or Korean bramble, is a species of raspberry native to Korea, Japan, and China. It produces edible berries that can be fermented into bokbunja ju, a Korean fruit wine . R. coreanus fruits are usually harvested between the May and July at peak harvest season. They can only be cultivated in a few areas in Korea , different to Rubus occidentalis, which can be cultivated widely across the country.