Hostas are popular ornamental perennials with enormous, beautiful leaves, making them ideal for gloomy environments. They occur in a wide range of colors, sizes, and textures, and are grown for their delicate, bell-shaped flowers. They are low-maintenance and like shady areas, frequently growing behind trees or on the north side of a house. Hostas grow in clusters or mounds, with some types reaching 1-3 feet tall and wide and others much larger.