Answer: Your Blue Potato Bush (Paraguay Nightshade) is a tender evergreen perennial in warm parts of the country and an outdoor annual in gardening regions such as yours. You can try to grow it indoors this winter and then set it back outdoors in the spring when the weather warms. It won't survive outdoors during your winters. It loves heat, bright sunshine and is drought tolerant. Yours is showing stress from being moved to places where sunlight, temperatures and humidity are different. As you've discovered, it will recover when given good care. Yours will probably drop all the leaves it developed while outdoors on your patio, but should produce new leaves once it adjusts to being indoors. Provide bright sunshine or set it under fluorescent grow lights, water when the top of the soil dries out and prune it back to encourage healthy new growth.
Best wishes with your blue potato bush!
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