Y
Yucca filamentosa 'Golden Sword'
(Golden Adam's-needle Yucca)
Hardy evergreen shrub grows to 2+ ft. Creamy-yellow flower spike Drought tolerant. Sun. Zone 5-7
Yucca flaccida (Southwest Yucca)
White flowers 4-7 ft above bluish-green, 2 1/2 ft. long foliage. Zone 1-9. Sun and well-drained soil.