I am very excited to be doing these tests! Now that I have some time, I am going to be building the three most common season extenders that I know of.
1) Plastic covered low hoop
2) Wood framed cold frame
3) Bales of hay with glass set on top
In each of these I am going to plant carrots, spinach, lettuce, beets (for the leaves only), and arugula. I am also testing which varieties of these plants do the best in the cold. I will add pictures once it is all in place!