Extend your growing season with a DIY protective garden box
In short: Learn how to construct a cold frame, a functional mini-greenhouse designed to shield plants from frost. This guide explains how to build one using rot-resistant materials and salvaged parts to foster seedlings in early spring or preserve vegetables through winter.
A cold frame functions by capturing natural warmth to create a protected microclimate for gardening. By constructing a box with rot-resistant planks and a salvaged window, you can extend your harvest into the colder months of fall and winter.
The build requires specific hardware for functionality: 4-inch galvanized strap hinges to attach the window, 4-inch removable-pin hinges to make the frame collapsible, and pavers to support the base. For optimal results, the structure should be placed in a south-facing location where water does not pool.
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Sources
- Summary by Intellect · source: How to Build a Cold Frame | This Old House
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