YUCCA FILAMENTOSA (ADAM'S NEEDLE)

Clump-forming shrub, stem less or almost so, with basal rosette of inversely lance-shaped, rigid, dark green leaves, up to 75cm long, margined with curly white threads. Nodding, bell-shaped white flowers, 5cm long. Tinged green or cream are borne in upright panicles, up to 2m or more long, in mid and late summer.