Part of my daylily beds are situated so they can be walked around, and I have a row of Gaura planted behind the dayliles.
I purchased several Guara "pink fountain" plants from Walmart last year, and have discovered that a couple of them are pink fountain's parents. Gaura "pink siskayou (sp?)" which is a much darker color, and Gaura "white fountain."
Gaura thrives in full sun, and our second round of bloom is well underway, as the first picture shows. There are two more of them on the other side of an arbor that don't get any sun until after 12. These two are just barely starting their second round. (2nd photo).
Sorry - those pictures were much clearer in Photoshop.
My daughter, who lives 1/4 mile away - across a field, has had some Gaura like mine for two or three years. Hers are in shade until well after noon, and haven't even started their second round of bloom.
