Plant in full sun and well draining soil. Compact growth habit, well suited to container growth, 2-6' tall. Prolific bearer in the spring and summer, Self-fertile. Mulberries are suited to USDA zones 5-11. In the ground, mulberries grow into a large bush, but a container grown mulberry tree’s size can be kept smaller (2-6 feet (0.5 to 2 m.) tall) by pruning just after fruiting. Pruning Mulberries also encourages the plant to produce berries again, resulting in several crops throughout the growing season. There isn’t much in the way of special care for mulberries in pots. They are extremely forgiving plants. Full sun exposure will make your mulberry happiest. Interestingly, the tree will do quite well with wet roots, but it can also be drought tolerant once established. They are also frost tolerant, although it is best to mulch around the plants to protect the roots from freezing and thawing. You can prune ever-bearing varieties at any time to retard their growth. Otherwise, cut back leggy plants in the late winter or early spring. Berries are formed on new growth.