Yellow yucca is a naturally occurring sport of the standard Southwestern native Red Yucca. These trunkless evergreen plants produce five-foot-tall stalks with bright, buttery-yellow, 1-inch-long trumpet flowers starting in spring. Yellow Yucca is actually not a Yucca but resembles one. Blooms stand above the mound of thick, narrow, gray-green, succulent foliage, and persist late into the summer. A must-have for sunny xeric and waterwise gardens, as a specimen, in a showy mass planting, solitary containers, or as a collector plant.