Gladiolus ( Pink Flare Gladiolus )
These cormous perennials are grown for their showy spiked flowers , which open from the bottom upwards . foliation is strap - like and perpendicular . Gladiolus look best when planted in large group . It is common to stake them . Soil should be fertile and well debilitate and light may be full sun or partial tone . Hardy in zone 8 - 10 , they may be planted in other areas as annual or even protect with a chummy layer of mulch ....