The greens in my coldframe are fat and sassy as winter descends upon us. Greens like cool weather, but prefer not to be frozen too much. A coldframe creates conditions that are just right. I'm amazed -- but not at all surprised -- that so few Americans have coldframes. There's no comparison between freshly-picked, organically-grown greens, and greens that were picked in some huge California field a week or two ago. But humans are a conservative lot, and it's very hard to get them to change their behavior.
Here's my greenhouse. Wearing my rose-colored glasses, I can confidently predict that we'll have more greens than we can possibly use for salads, smoothies, omelettes, etc. But this is still November, and I'm expecting a major outbreak of aphids by January. The first rule of homesteading: "there's always something."