Start with 3 to 5 plants per pot when planting your blueberries. This way, you can grow a large number of pots. Also, blueberry shrubs will spread by rhizomes, so you'll need plenty of room! When planting blueberries into the ground, try to put them in a sunny spot. Blueberries should be planted at least 6 inches (15 cm) deep. The recommended spacing between plants is 2 feet (61 cm).