Hi Carol and all,

We are assuming that the plant to which you refer is Hymenocallis caribaea Herb. This species is, as its name implies, from the Caribbean area. It is a tropical and subtropical plant. It does not take kindly to temperatures that are as low as 50°F for long.

I would not let it go dormant, nor would I subject it to chilling. While it may survive chilling, it is also likely to rot when chilled. It should remain evergreen and retain leaves all year.

Good luck!

Jim Shields
in central Indiana