Obligate WetlandPlant almost always occurs in wetlands.
Facultative WetlandUsually occurs in wetlands but may occur in non-wetlands.
FacultativePlant occurs both in wetlands and in non-wetlands.
Facultative UplandUsually occurs in wetlands but may occur in non-wetlands.
Obligate UplandPlant almost always occurs in non-wetlands.
Prefers full sun and dry soil. The bulbs should be planted fairly deeply. Most members of this genus are intolerant of competition from other plants. Divide bulbs in late summer or fall. Attracts bees.