Product: Walnut Leaves
Latin Name: Juglans regia
Plant Family: Juglandaceae
Other Names: Common Walnut, Persian Walnut, English Walnut, Royal Walnut of Juipter, Wallnuss, Welsche Nuss, Akschota, Arbre au Sommeil, Feuille de Noyer Commun, Nux Regia, Gland de Jupiter, He Tao Shu Zhi, Hu Tao Ren, Nogal Inglés, Walnussblätter, Walnussfrüchtschalen & Walnut Leaf.
Description: The common walnut is a deciduous tree, native to Central Asia and Northern India and naturalised in Southern Europe which reaches up to 35 metres in height. The leaves are alternate, ovate to lanceolate in shape, oddly-pinnate with 5–9 leaflets, with a central midrib and veined markings, mid-green in colour and 25-40cm in length. The tree has male and female flowers, the male presents as greenish coloured drooping catkins, 5-10cm in length. The female flowers are yellowish-green in colour and are grouped in terminal clusters of 2-5 which form a fruit with a ridged green outer shell.
Brief History: The common walnut was cultivated by the Chinese over 2,000 years ago, and has been used as food and medicine for over 7,000 years. Old English apothecaries used walnut as a vermifuge to expel intestinal worms; it was even used to treat scrofula in children and gout in adults. Culpeper in the 17th century recommended that the leaves ‘when taken with sweet wine, move the belly downwards’.
The dried leaves can be used as a tea substitute, they can also be used to make a natural brown dye which requires no mordant, and if the dye is made in a pan made of iron the resulting dye will be black. The dye can be used on the hair as a tonic and colour enhancer. The leaves can also be used to make a natural pesticide; the leaves contain juglone which is a natural insect repellent.
Shelf life of two years provided that goods are stored in an airtight container in ambient conditions.