Polianthes are a genus of half hardy perennials. They can reach from between 20 cm and 1.2 m (8 inches to 4 feet) in height.
Although they are perennials, many people like to grow them as annuals in the garden, for best results in cooler areas.
They bloom from late on in the summer until autumn, when Polianthes carry white fragrant tubular flowers.
A common name for the Polianthes plant is Tuberose.
Polianthes tuberosa by Flowerfreak, creative commons.
Common Names: Tuberose, Scent of the Night, King of Fragrance, Spice Lily.
Life Cycle: Half hardy perennial commonly grown as a half hardy annual by gardeners.
Height: Usually 18 to 36 inches (45 to 90 cm).
Native: Americas, Asia.
Growing Region: Zones 6 to 10. As a perennial in zones 9 and 10.
It is best to grow tuberose from tubers. These should be buried at about 8 cm (~2.5 to 3 inches) in mid to late spring.
The Tuberose tubers should be spaced at about 15 to 20 cm (6 to 8 inches) apart. Locate in a sunny area of the garden.
Idealistically, Tuberose should grow in a soil rich in humus and of pH 6 to 7.5.
If you require more Tuberose and other Polianthes plants in you garden, then they can be propagated by dividing their tubers in the spring time.
Members of Polianthes are easy to care for. They should be watered frequently, and fed with liquid fertiliser every couple of weeks.
I hope that you enjoyed this guide on how to grow Polianthes plants. You may also enjoy the following Gardener's HQ growing guides: How to grow Brodiaea, Actinidia kolomikta, Edelweiss, and Yucca plant.