Common Name: Sun and Substance Hybrid HostaScientific Name Genus: HostaFamily Name: LiliaceaeIdentification Notes'Sun and Substance' is a good example of the very large Hostas. The biggest known plant is 9 feet in diameter! Gold (yellow) leaved Hostas are another type; these generally tolerate or need more sung for best growth and color.Growth HabitVery large LeavesVery large, 12 inches or more across; yellow-green or yellow color.