The potato bush plant is an attractive shrub that grows up to 6 feet tall and wide. It is evergreen in warm climates, and its dense growth habit makes it suitable for use as a hedge or screen. You can also grow it as a tree by removing the lower branches. Pinching the tips.
Potato bush plant is grown outdoors in warm climates. In areas with cool winters, grow it as a potted plant that can be brought indoors when frost threatens. In cool areas, an abundance of small, blue flowers bloom in summer and fall. In frost-free areas, it blooms year round. The flowers are followed by bright red.
Potato bushes grow best if fertilized regularly. You can use a 2-inch layer of compost once or twice a year; a complete, balanced, slow-release fertilizer in spring and late summer; or a liquid fertilizer once every month or two. Compost helps the soil manage water efficiently.
Blue potato bush needs a sunny location and a frost-free climate. The plant prefers an organically rich soil that is constantly moist, but well-drained. Achieve the right balance of moisture by watering the plant slowly and deeply when the surface feels dry. Apply a layer of mulch over the soil to slow water evaporation. If the soil drains too quickly, work in some organic material,
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(SOURCE)https://www.gardeningknowhow.com/ornamental/shrubs/potato-bush/potato-bush-information.htm.
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