While usually grown for ornamental purposes, all species of hosta are edible, and are grown as vegetables in some Asian cultures. However, they may be toxic to dogs, cats, and horses if consumed in large quantities.
It is the most popular perennial in America because it is extremely easy to maintain and propagate.
It produces flowers on long stems in late spring or summer, but for me the foliage is the main attraction.
Never too much green nor greenery – love it!