I think most of these will cope all right, but you might upend buckets and blankets over the ones you are most worried about. Also, buckets or pop bottles of water will protect plants too.

Thanks VBain,
How do you do the pop bottles of water?

I'd like to know about the water buckets or pop bottles too. Do you fill them with warm water to act like little heaters?

I got out to cover my most favorite hostas, clematis, and my stocktanks that are home to my lotus. It was upper 20's last night with light snow. I actually think the light snow/water helped the leaves to keep from freezing. As it turned out, the stuff that wasn't covered appeared to do just as well as the covered stuff! I think we're going to make it. YAY! Hope the rest of you did as well.