Yucca Rostrata from own plant/succulent collection, trunk-forming, wide & tall as per photos. photos); white flowering, with beautiful silver-blue narrow leaves; not over-fertilised therefore top healthy and robust, slow growing (with growth pause in winter), conditionally hardy (up to -10C without frost damage), already trunk-forming; the plant has so far always overwintered successfully outside on the house wall in a dry location, for a (very) sunny location, planted in self-mixed permeable organic substrate (repotting only desired in 5-6years); enjoy your new Yucca rostrata!