Spend a few weekend hours crafting a mini greenhouse from a salvaged window to yield months of extra gardening.
The salvaged window you use as the cover will determine the size, shape, and style of your cold frame. The curving lines of the Gothic-inspired window we used made the construction of this cold frame a bit more complicated than building a rectangular structure; still, the procedure was straightforward. For our cold frame, barnwood composes the straight sides and tin the curved and pointed end. You can also use salvaged or purchased wood and paint it or leave it untreated.