They nectar on several milkweeds, butterfly bush, several coneflowers (as you can see), alfalfa, dandelion, clover species and a verbena. They lay their eggs on ground plum, a couple of vetches, soy beans, alfalfa, clovers, and black locust. There are three to five hatchings of them per year, depending on conditions and location. Three in the Arctic, and five in the southern reaches of its range ... So I'm thinking no wonder we always see these innocuous beauties!
Clearly they like other species to nectar upon, since the one they grouped up on is a Silphium perfoliatum, which was not mentioned as a nectar flower.
A photo I haven't gotten yet is the fluttering, apparently twinkling, clouds of them above the red clover on the spur road. But it is a shoulderless two-lane, and I'm less inclined to stop and shoot photos than I might otherwise be. But it's a sight to see.
This is the dorsal view. Most of my photos are of the folded/ventral view.
|Male clouded sulphur|