My cold frames (or hot tubs?) worked like a charm! I sowed seed last Sunday (see previous post). We had unseasonably warm temperatures most of the week that gave this process a big boost, so by Wednesday the Arugula had begun to sprout and the Kale and Komatsuna weren't far behind. This morning we awoke to a dusting of snow and 20-something temps, but the sprouts should fare just fine in their glass-covered tubs.
I sowed 3 tubs - but only had 2 glass panes so the 3rd was covered with plastic sheeting. That made a difference - no sprouts. So, I finished cannibalizing the 2 old aluminum storm doors that I had "borrowed" the 2 glass panes from. Hubby cut the aluminum frames so that I now have 2 more glass panes, and he has a plan for the leftover pieces, so nothing will go to waste.
So, now the 3rd tub also has a glass lid and has begun sprouting. In typical fashion for us, we used inexpensive and easy means to secure the glass from blowing off if the winds gust - baler twine and bungee cords! And they're easy for me to remove when I water or just want to get a closer look at what is going on inside.
I love seeing new green growth, especially since spring is still 5 long weeks away! Now...where is that spinach seed so I can sow another tub?
I tried the wintersowing method of seed starting this year, with what so far seems like great success. Every container I planted in January and February has sprouts! The next test is getting them to survive until I can transplant them into their garden beds. 
I couldn't resist the urge to get started transplanting, and a few weeks ago I went ahead with transplanting some cauliflower and broccoli to a couple of tubs that I'm experimenting with. I have some big black plastic tubs, about 2 ft. tall x 2 ft. diameter - perfect for absorbing the heat from the sun - that I have grown veggies in previously. I decided to try to use them as cold-frames (although 'hot tubs' has a better ring to it I think!) by planting in them, then covering with plastic or glass. I transplanted the broccoli and cauliflower to a couple of the tubs on March 1, and while they aren't quite as big as some of those that are still in the original wintersown containers, most of them are growing. 
I also direct-seeded Buttercrunch lettuce in one, Mustard-spinach in another, Swiss Chard in one, and a combination of radish, dill and cilantro in another. Those have all germinated and are growing as well.
Another experiment was a 2nd transplanting of the broccoli and cauliflower from the wintersown containers into their permanent garden beds. I did that Saturday (3/22) and today, I'm pretty sure most of those died :*( It turned too cold and windy before they could get rooted I'm afraid. I tried using some of the row cover fabric to protect them, but I didn't have enough to do a good job. Good news is, there are still several nice, healthy plants in the wintersown containers, so I'll get another shot at this in another week or so.
