The weeping mulberry tree (Morus alba) is a grafted variety of the white mulberry and is native to Northern China. Weeping mulberry trees grow best in USDA hardiness zones 5 through 8, meaning that they can withstand winter temperatures down to -15 degrees F. These trees grow into an umbrella-like, weeping form and can reach up to 15 feet tall and wide. The trees come in male and female, so you’ll need to plant one of each for the tree to produce fruit. The female tree will produce edible fruit in the summer after blooming with greenish-white flowers in spring and early summer.
Plant weeping mulberry trees in well-draining soil, spaced about 15 feet apart. Plant the trees in a location that receives full sunlight.
Water your weeping mulberry trees deeply to soak the soil thoroughly two or three times each week during the first two growing seasons. Water the trees once each week to supplement rainfall during the following growing seasons.
Stake the mulberry trees during the first three years to prevent them from breaking due to their heavy tops. Insert a sturdy 8-foot wooden stake beside the tree and tie the trunk to the stake every 6 inches using soft string or twine.
Prune weeping mulberry trees in the winter. Remove the lower two to four branches and prune away any crowded, dead or damaged growth.
Feed mulberry trees a balanced tree fertilizer once each year in early spring, just before new growth begins. Spread a granular, slow-release 10-10-10 NPK (Nitrogen-Phosphorous-Potassium) fertilizer around the base of the tree and water the soil thoroughly. Follow the fertilizer dosage instructions on the label.