I have some miniature Allium plants growing in my Garden Railway. Alliums are an ornamental Onion and come in many varieties. I like the size of these for the railroad. The butterflies were enjoying them as well as you can see in this image here. This is a Painted Beauty Butterfly, which have been very abundant in my gardens this summer, that I was able to capture enjoying some of the blooms. Remember that I have a guide for commonly seen butterflies that can be found here in Kansas to help you ID them. There is a link at the top of the page.