Pretty good idea. I like it. I wonder if they scattered any seeds around too? Wild grapes? Wild barley?, turnips, wild cabbage?
Fieldcress is so common in most of the south that it’s regarded as a wild green, it’s everywhere. Pretty good too, if you enjoy a more pungent variety of greens. Locals know them only as creasy greens, whether that’s a corruption of cress or named for the appearance of the leaves, I couldn’t say.