I love lilies too! And they go so well with Hostas. Year before last fall I planted a couple hundred lilies in the flower beds around my house, along with some hostas, tulips and irises. When they came in bloom they were gorgeous. My whole house was lined with lilies behind these other plants and flowers. Then someone said lilies are poisonous to cats, so I did a little research. Seem the stamen is especially toxic, so I went out to take a look.
There under one of my lilies, was one of my cats, enjoying the shade and surrounded by the fallen stamen dust!

I had a doctor's appt at 9am, so I hurriedly took some clippers and deadheaded every single lily, more than I could count that quickly, and buried them in the mulch pile. I was in such a hurry that I showed up to the doctor in my garden clogs.

So, last fall I dug them all up and gave them to a neighbor. This spring I've been digging up volunteers as they come up. Good grief!!! Now I have added dahlias and peonies to my garden in their stead. Someone please don't tell me they are also poisonous to my cats.