Hymenocallis

Native to the southern US and South America, this North Carolina native bulb has fragrant flowers that are produced on leafless stems, thereby being classified as scapose.  The onion-like bulbs prefer rich, well-drained soil, and most thrive with boggy conditions and occasional flooding.  It will tolerate sandy or clay soil, providing that moisture is consistent.  Allowing the soil to dry out will cause damage to this plant.

They can be planted in the ground or in containers.  Growing zones 7 through 10 are ideal for planting in the ground.  In locations that experience cooler or colder winter temperatures, container growing will allow you to bring plants in during the winter months.  Ground planted bulbs can also be dug up in the winter, dried and stored in a dry medium, such as peat.  

Plant bulbs to a depth of 5 in. (12.5 cm) with the tip of the bulb 1" to 3" below the soil and space 8 in. (20 cm) apart.  For container grown bulbs, plant with the neck of the bulb just above the soil surface.  Typically, a single bulb will perform nicely in a 5" pot.

After flowering the stems will dry and turn brown.  At that time the stems can be cut to ground level.   

In addition to being used as a houseplant or interiorscape, spider lily can be found it forests or other natural area, such as marshes, shallow streams, and ditches. 

Insects, Diseases, and Other Plant Problems:  No serious issues.  Occasional issues with snails, caterpillars and mealy bugs can occur.

Additional Hymenocallis Images at Juniper Level Botanic Garden