Divide in spring every 4 to 5 years, where hardy.1
Peruvian daffodils grow well in containers. Keep soil moist and feed monthly with a slow release fertilizer from spring to fall.1
The neck of the bulb should only be at soil level.3
Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Ismene is thought of as tender, so it is really important to plant out well after your last frost date.hymenocallis
2 Garden Guides entry on Peruvian daffodil
3 digdropdone.com/bulbs/hymenocallis-hymenocallis-festalis-ismene-festalis.html