[1][2][3] It grows in coastal prairie habitat, swamps and stagnant bogs with Drosera species, bluffs and sandy cliffs, and seaside spruce forests.

It is found growing along a narrow 200 mile stretch of coast between Southern Oregon and Northern California usually within sight of the ocean.

[4] Lilium occidentale produces more nectar than any other American lily, which is not surprising given that hummingbirds are the primary pollinator.

Threats to this species have included grazing and trampling by livestock, development and ranching, cranberry farming, genetic drift, vehicles and road maintenance, and horticultural collecting of the bulbs and flowers.

It can be easily grown in an artificial type bog or other wetland setting providing its need for constant moisture during the growing season is met.

There is considerable hybridization with other native lilies, in particular L. columbianum, in areas where the two species grow in close proximity.

[9] Rapid treatment with activated charcoal and/or induced vomiting can reduce the amount of toxin absorbed (this is time-sensitive so in some cases vets may advise doing it at home), and large amounts of fluid by IV can reduce damage to kidneys to increase the chances of survival.