Pomegranates (Punica granatum) grow on shrubs that usually reach 15 feet in height. 'Nana,' the dwarf variety, will grow from 1 to 3 feet and is easily grown in pots on the patio or as a houseplant. Unlike other dwarf fruit trees, even Nana's fruit are dwarf but are good for eating.
Place the dwarf pomegranate in a sunny area. If the plant is small enough, a windowsill is an ideal location.
Water the pomegranate often enough to keep the soil moist until it becomes established in your home. After that, allow the soil to dry completely before watering again. While the plant is in flower, allow the soil to remain moist, and then cut back on watering (allow the soil to dry) after the blooming season.
Fertilize the dwarf pomegranate each spring with a slow-release 5-2-6 formula, at the rate suggested on the package. Water the soil prior to applying fertilizer.
Repot the dwarf pomegranate when the roots begin to show at the bottom of the pot. This plant's roots thrive in a pot-bound environment, so allow them to fill the pot before repotting into the next size larger container. Use a soil containing one part peat moss to one part each compost and potting soil to two parts sand.
Prune the dwarf pomegranate after blooming. Cut just enough to keep the tree the desired shape and size.