The mulberry is a deciduous tree that ranges in size depending on the species. White mulberry trees are the largest and reach a height up to 80 feet. Black mulberry trees are the smallest and reach a height up to 30 feet. All mulberry varieties produce berries that are desirable to animals and used in making preserves. Plant the large mulberry species in an area with room for branch spread and no overhead obstructions.
Select a planting location for the mulberry that receives full sunlight, a well-draining loam soil and adequate room to grow. Mulberry trees require a minimum planting distance of 15 feet from other trees, sidewalks and structures.
Dig a planting hole that is twice as wide and the same depth as the container the mulberry tree came in. Mix organic compost into the removed soil at a rate of 1:1.
Remove the mulberry tree from the container and loosen large roots that wrapping around the root ball. Set the tree into the hole so top of the root mass is even with the ground.
Fill soil into the hole to cover the bottom half of the root ball. Add water to the top of the hole and let it absorb into the root ball and surrounding soil. Fill the remaining hole area with soil and pack in place to limit air pockets.
Water the soil two to three times a week with 1 inch of water for the first month after planting. Provide supplemental water to the tree during periods of drought when the weekly rainfall is less than 1 inch.
Fertilize the mulberry tree with a balanced 10-10-10 fertilizer each spring after one year of growth. Follow the package application instructions based on the size of the tree.
Prune the mulberry tree in early July to shorten lateral branch growth so there are six leaves remaining. Prune the mulberry tree while it is small to develop a set of main branches with short lateral branch growth on each.