20 Seeds Lagerstroemia Speciosa Queens Giant Crepe Myrtle This show-stopping ornamental tree is named because its petals look like crinkled crepe paper. This tree likes to live in full sun where it can grow up to 80 feet high in its native environment, and about 60 feet in the United States. The pink, magenta, mauve, and purple blossoms are out from late Spring until the middle of the Summer. The bark can be used to make a yellow dye. The Indian Postal Department made a stamp to commemorate this plant. USDA Hardiness Zones 9 to 11.