How to build your own raised-be cloche" the internet. It was provided by Oregon State University Extension Service.
Since this spring has been unusually warm I decided to wait until this coming fall to add a polyethylene cover. I will likely order some 6 mill UV protected polyethylene plastic sheeting over the internet. If someone out there might like to go in on an order please let me know.
I used a tarp to cover the plants on the very few cold nights we've had this spring.
Fencing around the raised bed was added to keep the rabbits out.