[5] Hymenocallis coronaria requires a swift, shallow, water current and direct sunlight to flourish.

They are visited and possibly pollinated by Paratrea plebeja, commonly known as the plebeian sphinx moth, and Battus philenor, the pipevine swallowtail butterfly.

[9] Hymenocallis coronaria is under consideration for protection under the Endangered Species Act, due to entire populations being wiped out by dam construction.

[9] There are only approximately 50 extant populations of Hymenocallis coronaria left, all in the states of Alabama, Georgia, and South Carolina.

The project involves collecting seeds from native stands along a section of Flat Shoals Creek, a tributary to the Chattahoochee.