One advantage of Duke Blueberry plants is that they are self-pollinating! This means that you do not need to do any extra work to help them produce rich, delicious berries. Its pinkish-white flowers provide plenty of nectar for nearby pollinators, including bees and butterflies, to enjoy.However, there are steps you can take to help increase its yield Cross-pollination can help your shrub grow to new heights and produce a bountiful harvest. To encourage this process, consider planting your Duke Blueberries with other cultivars of high-bush blueberries, such as: • Bluecrop • Blue gold • Elliot • Jersey • Hardyblue • Blueray • Liberty