Mound Lily

Mound Lily (Yucca gloriosa) is a species of flowering plant in the family Asparagaceae, native to the beach scrub and sandy lowlands of the southeastern United States, from the Outer Banks of Virginia and North Carolina to Florida and the coastal bend of Texas.
It is also widely cultivated as an ornamental and reportedly has become established in the wild in Italy, Spain, Turkey, Mauritius, Réunion, Guam, the Northern Mariana Islands, Puerto Rico, Argentina, Chile and Uruguay.

This sculptural plant bears sword-like leaves to 24 inches long in shades of blue- or gray-green and maturing to dark green, with smooth margins. In summer, the plant produces 8-foot spikes of nodding, bell-shaped, fragrant white flowers, sometimes tinged purple, to 2 inches long.

Mound lily has been known to cause skin irritation and even allergic reactions upon contact.
The leaf points are even sharp enough to break the skin.