Dracaena

Dracaena (Dracaena marginata), more commonly known as a dragon tree, is an attractive, stiff-leaved plant with green sword-like, red-edged leaves. The plant has narrow, slender gray stems that are topped with shiny, arching leaves. 
Generally grown as a potted houseplant and kept pruned to 6 feet or less. Unlike many indoor trees, it tolerates a wide range of temperatures.