Here's another one for the plant gurus... plants are about 30 inches
tall and blooming now. The blossoms seem to open and close with the
passage of the sun. I thought they might be balloon flowers, but don't
think so. Any ideas what they might be?
If I saw them here (England) I'd identify them as Silene latifolia
(White Campion). (By balloon flower do you mean Silene vularis (Bladder
However there are also a number of American species with white flowers.
Stewart Robert Hinsley