Yucca filamentosa,[1] Adam's needle and thread,[2] is a species of flowering plant in the family Asparagaceae[3] native to the southeastern United States.

Y. filamentosa is readily distinguished from other yucca species by white, thready filaments along the leaf margins.

[5] It has become naturalized along the Atlantic coastal plain north to Long Island Sound, and into areas of the lower Midwest.

A fairly compact species, it nevertheless presents a striking appearance with its sword-like leaves and dramatic flowerheads.

'Bright Edge', a dwarf cultivar with yellow-margined foliage and creamy flowers tinged with green, has gained the Royal Horticultural Society's Award of Garden Merit.