A dwarf pomegranate is a small tree, maturing at approximately 2 feet, and it needs warm temperatures and moist soil. The fact that it is a subtropical plant sometimes deters gardeners in the north from trying to grow them, when in fact the trees do quite well indoors and in greenhouses. The leaves on this tree are unique in that they are a dark green with shades of bronze throughout. The fruit from a dwarf pomegranate is very small but still quite sweet and tasty. This tree is used frequently in bonsai gardening.
Choose a container that is 12 to 18 inches deep. The dwarf pomegranate has a large root system, and a shallow container will not allow the roots enough room to spread out. Fill the container with 2 parts potting soil and 1 part compost and mix well.
Push away the soil in the center of the container to make a hole for the tree's root system. Mound the soil slightly at the bottom of the hole. Carefully take the tree out of the container you purchased it in and knock away the soil. Spread out the roots gently and set over the mound. You may also plant directly in the ground in the same manner, if the temperature in your area never goes below 40 degrees.
Plant at the same level it was in the container you purchased it in by filling soil halfway over the roots; water to compact the soil. Continue to fill the hole and hand tamp down so the soil is level across the entire container.
Water well following planting and then water to keep the soil moist. Place the tree in an area of full sun and give it some protection if you have hot drying winds. Mist with a spray bottle every other day during hot, dry periods.
Fertilize with a fertilizer that is made for fruit trees every other week once you start to see some growth. Apply the fertilizer according to the manufacturer's directions.
Bring the tree indoors or place in a greenhouse once the weather starts to get cool. Put a tray full of pebbles under the container and place water in the tray. This will provide the needed humidity for the tree while it is indoors in a dry environment.
Prune off dead branches and thin out the inside of the tree to allow for air circulation. Pruning should be done in the late fall or early winter after fruiting is finished.