It has been a long time since I grew them so I don't remember well. I wintersowed them. They do need cold strat unless the seeds are very fresh. If you pick the seeds from the plant in summer and throw on the ground, they sprout immediately. Older seeds need that cold period and wintersowing fits the bill.
I think McKanna's Giants bloomed in year 2 and Origami in the first year. I don't have them anymore. I got rid of them due to severe repeated sawfly larvae damage.
Karen