Let Us Eat Lettuce
By Sue Marlow
That is what we have been are able to do most of this winter. Not from a grocer but from our greenhouse. The late summer/fall project was building a greenhouse. It is so lovely I have named it the Solarium Greenhouse. Mostly my dear husband and some dear friends built it, but I was number one helper and feeder of workers. This was always planned as a year round greenhouse so it has some special features. The concrete foundation is below frost level with cinder block walls tarred and insulated with two inch thick foam sheets. Outside it is lap sided with 1x12 rough cut pine from a local mill. The first couple of rows of siding are cedar. It is about 22 feet by 14 feet wide. The glazed area is about 10 by 22 feet.
We have four rows of concrete filled cinderblock which add thermal mass to collect and store the heat by day on all four sides. There are quite a few milk jugs filled with water tucked between the cattle feed buckets the plants are in. These also help moderate the day and night temperature changes. The rest of the structure is 2X6 frame with fiberglass insulation. The inside wall covering is also pine planks. I touched every board as I polyurethaned all the wood inside and out. The multicolored knotty pine is so lovely we wanted to preserve its beauty as long as possible. There are windows with screens for some cross ventilation in summer. The entryway is made with a double door system to avoid drafts in the winter and minimize insects flying in as we enter. You come in the front door, close it behind you and then