Gladiolus, sometimes called Sword lily, is a genus of around 300 species . These perennials produce narrow, blade-shaped leaves and attractive fragrant flowers on tall spikes . They are available in a wide range of colors and are popular both as garden flowers and cut flowers. Gladiolus grows between 60 to 180 cm (2 to 6 ft) in height. These plants prefer moist and well drained soil, with a pH between 6.0 and 7.0.