How big do lily's grow?

There are so many varieties, it makes a direct answer difficult. There are daylillies, canna lillies, calli lillies, spider lillies and many many more. Of these listed, daylillies can be the size of a coffee cup, up to 4 feet tall and 2-4 feet in diameter (in groups). Cannas grow from 6 inches tall to almost 7 feet tall. Callis grow from 6 inches tall to 4 feet tall. Spider lillies, 3 feet tall with blooms to 4 feet and 3 feet in diameter. There are dwarf varieties which are smaller of course.