Let tuber rest in fall in cool, dry spot. Replant in February. Lots of sun in summer. Cut back in early spring to keep it bushy. Lots of water and fertilizer in spring and summer.
Plant rests in winter.
Keep at 40 and water very little. Repot in January and cut back. Return to room temperature, water daily. Use an acid fertilizer to get blue flowers. Not recommended as winter hardy outside but may live in sheltered area.