Gladiolus ( Purple Star Gladiolus )
These cormous perennials are grown for their glossy spiked peak , which open up from the bottom upward . Foliage is shoulder strap - corresponding and vertical . Gladiolus look best when plant in gravid chemical group . It is common to stake them . Soil should be fat and well drained and light may be full sun or partial shade . Hardy in zones 8 - 10 , they may be planted in other areas as yearly or even protected with a thick stratum of mulch ....