Hostas is the definitive guide to the popular hardy perennial that gardeners have come to rely upon and enjoy. Favored for their beauty and longevity, these shade-loving, low-maintenance plants bear foliage in all manner of shape, size and texture and in colors ranging from steel blue, tonal greens and yellows to multi-colored. Their long-blooming, aromatic flowers come in variations of white, pale lavender and blue-purple.