I grow most of my daylilies in pots, ( because of the weed situation in general) so even tho it does get in the pots, it can be pulled out. My husband gets so mad at me and tells me I am going to have to stop edging with round-up. Problem is the bermuda grows into the beds from the yard and even if you edge, you still have to kill the grass. I just do both at once. Im going to have to check into some of the non daylily killing ones that Michele listed.