I haven't seen much variety in white geraniums at the nurseries. There is pretty much just one variety. "Americana White" is what I have. They are pretty tall actually, a little taller than my flat variety "Americana Bright Red", but I got those in a larger size so they would be the same. They lack the variegation on the leaves of the red, but they seem to be reliable bloomers. Geraniums are by far my favorites, hard to mess up (except too much water).