I had about 20 seedlings I started from seed (my first time!) in June for a fall crop. I had to leave town and my husband managed to kill every last one of them.
(Don't even ask me how - I have no idea.) It probably wouldn't have mattered anyway, because we had to make an emergency move (my husband was poisoned and nearly killed by chemicals in our house from a negligent bathtub refinisher and we had to leave the house because he was permanently sensitized, so even the small amounts remaining after weeks were making him sicker and sicker) so they might have all died when we moved them after planting them out anyway. But now I have no seedlings and it's too late to start from seed (I'm in zone 9). I don't know if there's anywhere I could get seedlings right away, so I'm asking the experts. The one place I saw that had fall and winter crop seedlings for mail order said they needed 80 days notice. I haven't looked much, though - this is the first moment I've had to breathe since my husband got sick and we moved! Surely there is somewhere....right?