A nutritious, balanced diet rich in fruits can help lower blood pressure and support healthy blood flow. These fruits have fiber, vitamins, minerals, and beneficial plant compounds that may help lower blood pressure. Yura Shtepa / Getty ImagesKiwis are a good source of vitamin C. A 2020 research review suggests that vitamin C might help lower blood pressure in people with high blood pressure. However, their nighttime blood pressure decreased, which may indicate better blood pressure control. As research suggests, berries, watermelon, kiwis, grapefruit, grapes, bananas, and pomegranates may lower blood pressure.