Biccylova,
Yes, I did grow the morning glory from seed, that was free in a gardening magazine, they grew far better than my wildest expectations!
I planted the young seedlings, (that had been raised in the conservatory) around the base of an 8' wooden obelisk, they completely covered the focal point with a mass of white purple and lilac blooms the came out to greet the morning sun and once they had their quota, they would coil up like little umbrellas until another day.
Best freebie I ever had!!
I think the black eyed susan, may be a little more tender. Good luck!