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.


| January/February 1979



Seedlings

Cold frames are a great way to safely sprout seedlings in early spring when the air is still cold. They can also protect plants from early frosts in autumn.


PHOTO: FOTOLIA

In the early spring, a cold frame can be as valuable to the gardener as his or her right arm because they allow you to jump-start spring seedlings and prevent frost. During the rest of the year, however, one of these little hothouses just takes up needed growing space.

You can solve this seasonal dilemma, though, if you build yourself a knockdown cold frame, which can be set up in minutes when it's needed and taken apart just as quickly (to be stored in the garage or wherever) after warm weather or seedling maturity make the protective enclosure unnecessary.

One of the biggest advantages of the knockdown cold frame is the adaptability of its very basic design. These structures can be built in about any size that you'd want . . . either to make use of available materials or to fit in a particular corner of your garden.

Of course, you'll have to remember to allow enough inside height in your cold frame for whatever plants you intend to grow, and to slope the cover toward the front so that rain water can run off. Be certain, too, that the cover panel fits tightly over the frame (to prevent cold drafts that could injure delicate seedlings) and that you position your finished cold frame-especially in early spring so that its slope faces south and can capture as much of that precious sunshine as possible.

How to Build a Knockdown Cold Frame

See the Image Gallery for the illustrated steps of building a cold frame. 

The knockdown cold frame consists of five separate parts, which can be put together, or disassembled, in minutes. This basic construction technique can be used for most cold frame sizes.





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