The
PVC 1/2" piping is secured well to the sides of the raised bed with
four brackets on either end of each length of pipe. Plus, there's a
length of string, not visible in the photo, crisscrossing over the
plastic between the pvc. We get some good winds here. It's not had a big
test, yet. Waiting for a nor'easter!
There is a thermometer in the tunnel. I'm not able to monitor regularly. But, the temp, on a sunny, warmish (40's) day, reaches the 60's.
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