When taking orders for Easter lilies, ask customers if the recipients have cats and be ready with alternative gift suggestions. According to the National Animal Poison Control Center, some lilies can cause renal failure in cats.
Want to make a general announcement on your website or on in-store signage? The Society of American Florists suggests this verbiage:
The National Animal Poison Control Center says certain types of lilies can cause renal failure in cats that have ingested any part of the lily. (Your shop name) recommends keeping lilies out of the reach of cats. It is important to note that lilies do not pose a problem for other pets or humans.