The weeping mulberry (Morus alba Pendula and M. alba Chaparral) is a cultivated variety of the white mulberry tree. Weeping mulberry trees are deciduous and grow up to 50 feet tall with long weeping and drooping branches. Weeping mulberry trees grow best in regions that experience long, hot summers and mild winters, but some varieties can tolerate winter temperatures down to -30 degrees Fahrenheit. They can grow in urban environments with air pollution, but they need some shelter from high winds. Weeping mulberry trees produce fruits that are typically white-colored. The tree's canopy is umbrella-shaped, with branches that grow outward and upward, then drooping downward toward the ground.
Water your weeping mulberry tree deeply to soak the soil down to and around the roots once each week during the first two years after planting it. After the tree is established, you can water the mulberry deeply once each week while it's actively growing only during prolonged dry spells or droughts.
Stake your newly-planted weeping mulberry to prevent the young trunks from breaking during high winds. Insert two or three wooden stakes around the trunk and tie the trunk to the stakes with twine.
Prune your weeping mulberry tree during winter, when the tree is dormant and the leaves have fallen off. Prune away or shorten the lower branches that are becoming too heavy and long.
Spread a four-inch-thick layer of organic mulch on the ground around the weeping mulberry after planting it to cover the tree's shallow roots. Add more mulch to maintain the thickness each year in spring or fall to keep the area around the tree free of weeds.
Feed your weeping mulberry tree in early spring during the first two or three years with an all-purpose tree fertilizer, according to the directions on the label. Fertilizing isn't necessary for established weeping mulberry trees, but you can fertilize the trees if your soil is nutrient-poor.