Season extension is critical in Montana. We have high tunnels, low tunnels all to keep the warm in at night and the day time temperatures up! The white stuff covering our crops in this picture is call "Agribon" or "Remay". It is a cover that lets water and air in, but keeps out stuff like insects. We are using this cover because we want to keep out a few insects that love to munch on greens such as mustards, arugula, and other brassica related crops.
I also attached a picture of one of our peas that we used for a cover crop this year to put Nitrogen into the soil. Those "bumps" all over the roots are a bacteria called rhizobium, and they help the pea plants fix Nitrogen from the atmosphere. In other words peas, with the help of this rhizobium, make their own nutrients. When we turn it into the soil we get food for the next crop--which happens to be our peppers and eggplant this year.
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