Yucca filamentosa

Yucca filamentosa, commonly known as Adam's needle, is a medicinal plant native to eastern North America.

Usually trunkless Yucca filamentosa is a multisuckering plant with heads of 30 inch (75cm) long, filamentous, blue green strappy leaves. The plant is fully hardy. Yucca filamentosa is readily identified from other Yucca by white threads (filaments) on the leaf margins. See image

Flower stems up to 10ft (3 metres) tall bear masses of pendulous cream flowers, in summer.

Cultivars

 * Bright Edge is a dwarf cultivar with yellow-edged foliage and creamy flowers tinged with green.
 * Golden Sword is similar to Bright Edge but larger.
 * Ivory Tower has creamy white flowers tinged with green.