These fabulous plants are among our favorites and pair beautifully for a soothing monochromatic display. These perennials will look their best when deadheaded to encourage more flowers, and fed with a fertilizer labeled to encourage more blooms. This container is meant to be a temporary feature in the garden; in fall, these plants can be separated and planted into the garden or overwintered indoors. If you want an arrangement that lasts for many years, consider choosing a larger planter than what is used below.