This is as far as I have gotten. You can put plastic over the top to keep the heat in during the early Spring, but I will be just putting some screen-type fabric over the top to just keep the squirrels out and let the rain in. The intention of this is to all the seeds to stratify over the winter, and as soon as they germinate and pop out in the spring, I will be transplanting them into propagation containers.

I'll post more pictures as I progress on with my greenhouse.

Next step is to fill the box with growing medium.