Jealous

My daughter sent me this pic of what I assume is a swallowtail caterpillar on her dill plants. She says there are four, chomping away. I offered up my butterfly habitat, but she declined. It's one thing if Mother Nature ends their lives, quite another if they die from neglect.

My dill is long dead, so now I am thinking I should plant it successively, to increase the likelihood that I will attract some egg-laying swallowtail butterflies.