After I planted the lettuce and broccoli seedlings, we received a small bit of frost. Lost most of the broccoli, but all of the lettuce and romaine turned out fine. Since the frost occurred a day after I planted them and then we had sunny days, I am wondering if I didn’t harden them enough and the sun may have finished the job. Either way, that’s what the garden stores are for. I picked up a tray of nine seedlings, which was plenty, and stuck six of them in the ground. They look a lot better than the ones I had anyway.