Keep the soil fairly dry, but water before it dries out fully. Within a few weeks, green tips should emerge, and root systems will develop that allow the plant to handle more water. As tuberose grows, provide roughly 1–1.5 in. (2.5–3.75 cm) of water once a week. Tuberose prefers this to more frequent watering in smaller amounts.  Reduce watering if rain occurs, so the tuberose only receives a total of approximately 1–1.5 in. (2.5–3.75 cm) of water each week. Take care not to over water, as tuberose rots easily (the reason you really need well-draining soil). An 8-8-8 fertilizer, with equal parts nitrogen, phosphorus, and potassium, is recommended for tuberose. Apply solid fertilizer around the soil of the plant once every 6 weeks, or apply liquid fertilizer according to packaging instructions. The flowers typically emerge about 90-120 days after planting, usually in the late summer or early autumn. Removal of the flowers for house display will not harm the plant, so enjoy bringing the scent into your home.  If the weather is turning cold and the plant has not yet flowers, transplant the tuberose to a large pot, and bring it to a warm location indoors. Remember, the pot must be well-draining, with a hole in the base and something beneath it to catch the water. Keep in mind that the tuberose flowers are very fragrant. They will be at their peak of fragrance during the evening hours. The flowers will start to weigh the branches down when they start to bloom, so you may want to add some form of support. Place a trellis in the ground next to the plant or use a cage to help support the plant from all sides. Even if you don't bring flowers indoors, remove the withered flowers to encourage new growth. Do not remove any leaves until they are completely yellow. Once the foliage is yellow or brown, the plant is done growing for the year. Move on to the next section if you expect a cold winter, or simply leave it in the ground if you are located in USDA hardiness zones 8 or higher, and expect a typical winter. Do not apply any fertilizer while the plant is not growing.

Summary:
Water sparingly until plants emerge. Water moderately during the growing season. Apply a balanced fertilizer. Feel free to cut flowers to arrange indoors. Support the flowers if needed. Prune to encourage growth. Stop watering when the flowers and leaves die.