It's hard to resist the tall flower spikes of Erysimum, and Erysimum 'Erysistible' decorates those spikes with a mix of dusty orange, purple, and rose-colored florets that are comprised of four small petals each. This is a great plant for container gardening, taking the role of "thriller". Its good height makes a statement, with blooms appearing from early to mid-spring. But some gardeners cannot resist using it directly in the garden, in a mid-way back border that needs good color... equally appropriate.