36-44". When summer doldrums hit, here comes Gladiolus ‘Plum Tart’ to wake up the senses and bring fresh color to the summer scene. Standing tall at 36-44 inches, with dramatic strap-like foliage, ‘Plum Tart’s’ intense magenta-purple flowers are lovely in the garden and as cut flowers. Tall and stately, these easy-care plants add vertical and colorful interest to any garden setting. Planted near a boulder in the lawn Gladiolus ‘Plum Tart’ is a simple solution for a mid-season splash of color. Consider planting ‘Plum Tart’ with Phlox, roses, Echinacea and especially tall ornamental grasses. Hardy in zones 8-11, they can be grown in cooler zones as annuals.