Bea ~ I have started and planted some out. I may start some in very early spring as well, but the best ones come from fall-sown plants. This year went from winter to summer, with not much spring in between and every single plant bloomed out quickly. The peonies and iris, roses, all blooming plants because it was so hot, in the 90s, right away and stayed that way for a couple of months.
The sweet pea stems were quite short as they did not have a long enough growing time. It was the worst season for blooms in the garden. Maybe next year will be better, but it is hard to predict the future.
I am only sowing hardy annuals and perennials in fall. The tender annuals will have to go out after the last frost.