We had a hard frost last night, it got down to 29 degrees for several hours. Hubby and I spent two hours yesterday afternoon trying to cover everyone with empty pots and sheets. A few hostas did appear to get nipped anyway - those that had only a plastic pot overturned and were in low areas.
I manged to step on 'Purple Haze' and 'Sea Fire' but it looks like they will be okay. PH took it worst, I stomped both eyes, whereas SF I just stepped on one of the three eyes. Thankfully there are still about a dozen that are not up yet and another dozen that were just barely breaking through the soil - I just piled mulch on those. The Japanese Maple I have in front of the house was nipped hard.