The mulberry species most frequently cultivated for fruit is the black mulberry (Morus Nigra). Native to western Asia and grown throughout Europe, the black mulberry is a long-lived and decorative tree. The white mulberry (Morus Alba) is used to feed silk worms, but has inferior fruit. Mulberries grow best in sheltered, warm sites. They are tolerant of a range of soils, provided that they are well drained with a ph balance of 5.5 –