Hi Gerris2,

"Heavenly Blue is in a different species (Ipomoea tricolor) from Clear Waterfall, which is Ipomoea nil."

Good to know. It might be interesting to cross-pollinate those two. Interspecific hybrids can produce some interesting results. I produced these new zinnias via interspecific hybridization.

I think some very unusual morning glories would also be possible through interspecific hybridization.

ZM