More info on the fence, please?
I built a fence around my raised garden with pallets, drove rebar inside them to keep them in place. I’ve stapled cheap plastic garden fence to the insides to keep out ground squirrels, and provide trellis.
I have a disgarded tube frame from a portable canapy over the top with camoflage netting to provide a bit of shade and let the wind through.
Spinach survived frost, snow and cold all winter. Salad greens would have survived, but the birds ate them.