artichokes

I read that there was a commercial artichoke farm up the valley. I had to try it. I bought a mail order packet of seeds. There were 22. It was expensive. They said to treat them as annuals as they only over wintered in zone 7 and higher. But I know that they are really perennials, so if I mulch them well and cover them for the winter - could I do it? I made newspaper pots and set them out. This is my artichoke farm. I had to bring them back to the apartment so I could keep them moist. These are travelling artichokes. Stay tuned.