After removing the tractor tire, I decided to move the rhubarb that was inside the tractor tire. The tractor tire was once a sandbox (and probably a convenient outdoor bathroom for the outdoor cat), so despite my efforts over the years, the soil is still pretty sandy there. I was going to let the area return to lawn, but my SO offered me a clump of his silvergrass, which I have long admired. His soil is very sandy, so I figured it would do well in this spot.
You can't really see them in the photo below, but the silvergrass has been joined by two butterflyweed plants that miraculously survived last summer's assault by the "other milkweed caterpillar", larva for the milkweed tussock moth. One of these caterpillars was already starting in on one of these plants, but I deposited said caterpillar near some common milkweed, ironically the very ones they denuded last summer.
There is a variety of butterflyweed that grows well in clay soil, but these are not that. These are Asciepias tuberosa, which I hope will thrive here. I have no idea what the variety of silvergrass is, if anything special.