
I just started with just bottles with the tops or bottoms cut off to cover the plants I could and a black plastic bag for the row of lettuce.


For the lettuce plants I improvised a cold frame from a plastic bag, duct tape and six dry wire hangers saved from the dry cleaning.








I would estimate that I spent almost nothing but my less than an hour of time on this, since the ingredients were left over from other projects or free with other things.
So far my plants have survived the 4 or so days of deep freeze so the frame and the bottles seem to be working. I was finally able to begin the retirement of the device since last night's temperatures stayed above freezing, and what we have for the next few days is rain not freezing or frost.
For a detailed plan of the above project with measurements and a list of materials ... you will need to forget that you aren't watching This Old House or the New Yankee Workshop.
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