Can't. Haven't found anything that will grow in the snow or frozen rock solid ground, yet.
We're stuck with our beautiful summers for a growing season and have to rely on the canner and pressure canner to get us through the winter.
If you can’t garden outdoors in the winter, plant dishtubs of greens and tomatoes, etc and put in a sunny window.
You will be surprised how good they will taste.
Some of the oriental greens were not hurt by the snow that I had for several days, I brushed it off and and pinched leaves.