Coldframe I could make with some old windows!
build and use your own cold frame to grow veggies now on the cheap, carpentry woodworking, diy renovations projects, gardening, Our cold frame built form a pair of old window sashes and two pieces of 2 x 10 x 10 framing lumber
Upcycle an old window into a DIY cold frame with this Raised Bed Revolution excerpt, which provides step-by-step directions, photos and a project plan.
Garden Accessories & Outdoor: 5 tips to successful cold frame gardening
How to Build a Removable Cold Frame on top of your raised veg beds. (via Three Dogs in a Garden)
Cold frames offer a simple way to protect plants from frost, but take care to vent these season extension devices to avoid overheating your plants on sunny days.
In Rob's Northeast garden, plants such as lettuce, kale, broccoli, were able to survive the sub-zero weather in these cozy cold frames.