Michael at the Plano Prairie Garden blog identified the white flowered plant in my recent Moody Blues post, for which I'm grateful. He says it is frostweed, Verbesina virginica, which doesn't appear in my useless Texas Wildflowers book under either name. Click the link to see what frostweed does after a hard freeze. I hope to catch that frozen novelty sight before the year ends.
This afternoon frostweed is a village, a carnival, a PTA fundraiser for bug school. Enjoy the crowd watching.