We are not big on doing nothing so this time of year is about keeping our hardy perennials from freezing to death and preparing our lights for starting seedlings. Right after Christmas we will be starting various seeds so as to be ready as early as possible in the spring.
Ken organizes the lights and Shirley has the expertise in sprouting seeds no matter how stubborn they might be.
The greenhouse is heated but not to the extent of being able to grow stuff all year. We are working on that.
We are considering how to heat a greenhouse with a passive solar hydronic system and a wood furnice backup. This is not cheap even when we do all the work (as usual). Like our other projects, we spend a lot of time just considering the options and then moving to the best one.