I started some seeds yesterday. It felt pretty good, considering how big and burdensome my digging jones gets when the snow comes and stays.
Best table found ever in a gardening book (in my opinion): p. 33 of Nancy Bubel’s The New Seed-Starters Handbook (Emmaus, PA: Rodale Press, 1988). I hope you can read it but it clearly shows that a wide temperature range is acceptable to most seeds.
The greenhouse is a funny place. The double coverage on most of the beds means that, technically, seeds can start to germinate. (The big secret of seeds is that they don’t need 68* soil to get started. They’ll start if it’s colder than that, but they will do it ever so much more sloooowly.) Of course, I am in a bit of a hurry (as ever) so I am starting a few lettuces indoors now too to be transplanted around the first of the year. They’ll live on the front porch (heated during the day, unheated at night). Because of the porch’s wild shift in temperatures, the seedlings will get well acclimated to the cold of the greenhouse.
Remember these babies? Look how big they’ve gotten in less than 2 months!
I have very small seedlings going in the old greenhouse now, destined to be eaten in January. I also have lots of seeds I threw in the ground in mid-November. These seeds (spinach, orach, minutina, mizuna, lettuce) will come up and start getting big in February. The ones I will plant in January will be ready for March. And so it goes.
My goal is that the new greenhouse’s lettuces will be eaten or spent come mid-February.