This year my friend and I grew Cobeas from seed. She sowed white ones, and I sowed blue ones. Mine were problematic from the start, and the first packet failed to germinate at all. Eventually though they grew and we swapped plants. I planted four in all, 2 white and 2 blue. The white one that I planted in full sun, where it was supposed to thrive, has just about hung onto life but hasn't done anything else. The other ones I planted over a pergola and they have eventually produced buds. Two days ago I was thrilled to see that one had opened - isn't it just gorgeous!
It would have been nice if they'd flowered during the summer when I could have sat outside and enjoyed them, but it's better late than never!