luvsgrtdanes said:... as you know it's quite the addiction!
Zinnias are my addiction. But I have considered morning glories. Our Heavenly Blues threatened to become a weed, but were easily controlled. I considered breeding them, but skipped it primarily because they lacked warm colors.
That why that orange one in your pictures interests me. What variety is/was that? Several species are involved in morning glories. Maybe even two genera (Ipomea/Convolvulus). So there might be chromosome number barriers to some crosses.
But I think it is too bad that morning glories don't have the same extended range of warm colors that zinnias have. Morning glories have plenty of cool colors, included a good assortment of blues, which zinnias unfortunately lack.
I could be wrong, but I think that Arizona is the only state prohibiting morning glories. Bindweed is bad in some states, but you can't legislate a bad weed out of existence.
ZM