White Sage Did Not Survive Winter in North Carolina

I had written Mr. Richter last year about planting White Sage in North Carolina, USA. We talked it over and he though if I mulched it, it might make it. Tell him it did not live through the winter. I thought he might like this info for further reference.
Our zone is 7 here in western North Carolina. I sure wish it had lived. I guess I could grow it in a container and move it in the basement in the winter. Tell him thanks for the suggestion, but it didn't work. I mulched it heavy with leaves leaving a little of the top out. Maybe I did it wrong. Oh well. Just to let you know.

Thanks you for the feedback. Your experience will be helpful to others who may wish to try white sage.
White sage (Salvia apiana) is a native of the drier parts of California. It is possible your plant did not survive because of higher precipitation compared to where the plant comes from. Increasing drainage by raising the bed a few inches and by adding sand to the soil sometimes helps plants cope with more winter rain.