It was 22 degrees when I woke up this morning. We've had quite a few good frosts already, but this is the first real freeze. The really crazy thing is, we're supposed to be in a warm up in the next 4 days or so. There will be highs in the mid 60s at least. The parsnips couldn't care less.
The chard is probably going to care a little bit more. We'll see how it all goes. I've never had chard this late, so I have no idea what this will do to it. If all else fails, it will go to the chickens.