Cold Frame Plans for the Garden

Learn how to build a five-piece garden cold frame that is easily removed during the off-seasons and will jump-start the growth of spring seedlings.

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Note this simple dovetail arrangement which secures the corners. The joints are fixed in place by inserting a large nail (as shown) into a hole drilled right through all the pieces of the assembled corner. The nail can be removed easily for disassembly.
PETER J. WOROWIEK AND CLARENCE KINKELAAR