The tuberose (Polianthes tuberosa) is a member of the agave family and a native of Mexico. If you are looking for fragrance for the garden, consider the tuberose, which will bloom in summer and fall with tall stalks of highly fragrant, white blooms. Tuberose rhizomes are susceptible to fungal disease, so use caution when watering. You need to keep the soil moist during the growing season but don’t want to give the plant too much water. If in doubt, don’t water. Tuberose is hardy in USDA zones 8a to 10b.
Water the tuberose heavily every 5 to 10 days, depending upon the weather. If it rains, cut back on irrigation frequency.
Feed the tuberose with 5-10-10 fertilizer, at the rate suggested on the label, once a month during the growing season.
Cut flowers as needed and remove spent flowers to promote new blooms.
Remove the leaves when they turn yellow after the growing season. In USDA hardiness zones 8 and below, dig up the rhizomes after the first frost. Place them in a dry area for several days, and then store them in a box filled with dry peat moss.
Protect the tuberose from pests such as slugs and grasshoppers by attacking infestations immediately. Consult your county cooperative extension agent for which pesticides are suggested for use in your area.