"The Blue Isle, 'Gladiolus Blue Isle', a spring planted corm, exhibits magnificient dark blue flowers with a light blue heart. Gladiolas are also commonly called Sword Lily or Corn Flag. Glads are easy to grow and like to be in full sun and in well drained soil. Increase water and fertility when flowers begin to develop," then plant 4"" deep in clay soils"," 6"" deep in others; the deeper the planting the less need for staking. In frost prone areas", dig them when the leaves turn yellow, dip them in a fungicide, and store in a dry frost free location over winter."