Tranger,

If I had panels up like you do, I'd mulch around the plants with grass clippings, hay, straw or chopped leaves if I had any of those materials handy, and then I'd put bedsheets or heavy sheet plastic over the panels, and use duct tape or clothespins or something to hold them in place.

The important thing if you use plastic is to keep it above the foliage because anywhere the foliage touches the plants, you'll have freeze damage or plant death.

There's several other thread in which we're talking about covering up plants, so look for them here. If you can't find them, let me know and I'll find and link one.

Dawn