Blackberry leaves: Rubus: Blackberries are indigenous to parts of Europe where they have been used for food such as jams and other confections. The health benefits of the leaves of the plant are manifold and can be used in herbal teas, too. Blackberries and their leaves provide a score of vitamin C. They also are packed with fibre. They can be beneficial to the skin and face. Blackberry also has some impressive anti-inflammatory properties. But most famously for the leaves, is as a remedy to sore throats and other mouth ailments. The taste of the leaves is astringent and often compared to Oolong tea.