Arugula has proved me wrong; after a slew of single- and teen-digit degree days about a week ago, I gave up on my cold frame. Reconciling myself to better insulation for next year’s winter greens crops, I neglected to even open the lid. Michael flopped it open, though, and arugula had grown new shoots. In fact, the regular little lettuce greens and chard plants also looked a bit more lively.
Today, Groundhog Day 2009, as the temperature heads past 40, past 50 . . . and on to who knows what spring-like high point, the cold frame lid is open and inviting sun rays into the soil and onto the plant leaves without plastic filtration. Arugula is certainly proving to be a hardy winter green.
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