A Frost-Ready Garden In early September, we had several nights of frost, our first of the season. Covering the greens overnight helps them live on to continue feeding us. The chard to the left and kale to the right are frost hardier; they’ll do just fine on their own. When the sun and temperatures rise, uncovering crops warms frost-sensitive plants like these ground cherries. Chard is moderately frost hardy. These beautiful plants did just fine when nighttime temperatures dropped into the upper 20s on several nights. Very frost-hardy crops, such as kale, never blinked in the cold. We’ll be harvesting carrots until the soil freezes and we can’t dig into it. Come spring thaw, we’ll find some leftover root crop treasures.