FYI, I planted 45 3 month old seedlings outside last summer. Almost 50% of them bloomed this summer. Granted, winter was mild, and spring arrived early, but even with the drought, I was impressed.
This years seedlings didn't do so well, I only planted 24, and lost 3 already. Of course, the drought didn't help, and the extreme overgrowth of the tomato plants in the same bed probably didn't help.
I start my seeds indoors in the spring, and plant outside in early summer. Last year I experimented with direct seeding some outside, that didn't work so well. I am impressed with people that can do that.
Great advice here