Although this plant is called "Blue Potato Bush", and it is botanically related to edible potatoes, it is grown for its ornamental beauty only. No part of this plant should be consumed. Blue Potato Bush produces an abundance of charming blue flowers over a long season. It's very showy, fragrant, easy to grow, and a magnet for bees and hummingbirds!

Choose a location that will allow roots to spread and branches to grow freely. Space plants far enough from building foundations, walls, and decks so that the growing foliage won't crowd the structure. Consider whether tall trees or shrubs will block windows or interfere with the roof or power lines.
To prepare the planting area dig a hole as deep as the root ball and three times as wide. After removing the soil, mix it with some compost or peat moss. This enriches the soil and loosens the existing dirt so that new roots can spread easily.
To remove the plant from the container, gently brace the base of the plant, tip it sideways and tap the outside of the pot to loosen. Rotate the container and continue to tap, loosening the soil until the plant pulls smoothly from the pot. The container can also be removed by carefully cutting it down the side.

Source: https://www.mygardenlife.com/plant-library/2580/lycianthes/rantonnetii