Our two rear raised beds covered with Matt's movable cold frames
If your looking to extend your growing season, now is the time to install cold frames in your growing area. Often used as a separate, permanent structure to start plants the cold frame can instead be incorporated into your garden space. Hoops made of PVC and covered with opaque plastic are a common solution. The opaque plastic lets light in, and traps heat without cooking your plants, unless the weather warms to the upper sixties or so. Here's an idea my husband came up with on the fly for cold frames that allow super easy access and venting. Some years ago he constructed two movable cold frames that we can switch between our four raised beds from year to year with our crop rotation or we can break them down and store them for the summer..
The diagonal 2X2 shown at front of the raised bed above is actually the resting position of the swinging leg that holds the lid open.
Once the weather warms enough we remove the top, but can leave the plastic covered sides up for a while to help keep the soil temperatures up, and flea beetles etc down. Yesterday we took advantage of the nice weather to go out and plant our Swiss Chard inside the cold frame and our shallots in the space our frame was last season. It's still not too late for this season, or you can use the quite of the winter season to plan one for early spring. The frame will allow you to start planting as early as March. Not into do-it-yourself? You can contact Matt at The Living Wood Workshop for help.