An amphitheatre garden is cultivated with hornbeams, lime trees and white mulberry trees. Mulberroside A is a stilbenoid found in "Morus alba", the white mulberry. Annie began to raise silkworms on white mulberry trees at their home in Huntsville. Cultivation of white mulberry for silkworms began over four thousand years ago in China. Pyramus' blood stains the white mulberry fruits, turning them dark. There is an old white mulberry tree in the center of Smederevo. They have a preference for white mulberry, having an attraction to the mulberry odorant cis-jasmone. A weeping cultivar of white mulberry, "Morus alba" 'Pendula', is a popular ornamental plant.