Ahh, Jim is back!!
Very nice blooms! I am green with envy that your David Sander is blooming so nicely again!
Pretty C. intermedia X Bl. Morning Glory!
Kathy, maybe I just got lucky with my Pelatantheria? It gets a bright spot indoors ( for several years over the fish-tanks) and I keep it in a sunny spot in the cage during the outdoor season. My adjoining backyard neighbor ( Verizon) cut down some very large trees and as a result my cage is this year much sunnier than previously. I don't mind at all.
It gets watered daily, either faith-based or flooded with a hose. It has been flowering every year since I got it in the Fall, when I take it inside. Lots of fertilizer outside/with additional Mg.