Plantain Lily - zone 3-8 Short 15" (30" in bloom) - Plant 14" apart. Excellent for edging or massed planting. Forms a dense clump of heavily textured blue leaves. Flowers are dark lavender in July. Great shade plant. It is difficult to find a garden that is without this versatile East Asian native. Lush foliage in diverse colors, heights, and textures, coupled with its ability to excel in deep shade have captured gardener's hearts everywhere.