Dwarf Black Mulberry -Morus Nigra - Everbearing Abundant producer of sweet medium-sized fruit Can be trimmed to any height. The fruit is sweet and edible and greatly relished by humans, birds and various animals, and they can be substituted for blackberries in recipes. Hardy in zones 5-10 or patio Mulberries are known for their immune system enhancing benefits, and are thought to improve eyesight.