its a perfect plant for rock garden and laso be used as specimen plants with pebbles.
Botanical Name - Yucca spp
Yucca is a bold, stiff-leaved plants, somewhat resembling in between Aloe and Agave. Suitable for planting in the lawn as specimens or for mass grouping in large gardens, or as a rock plant in large rock gardens. These are generally grown in the succulent collection. A well-drained sandy-laom soil suits them most. Flowers are borne in a column-like inflorescence arising from the centre of the plant.