|Our finished coldframe|
There is lots of great info out there on building a great cold frame. The basics are...
- southern exposure is good
- a sheltered, warm spot like a south facing wall is a good site
- an angled top makes the most of low winter/late fall/early spring sun. 45 degrees is good.
- have in place a way to vent the frame and hold the lid all the way open so there is no cooking of plants.
Our version is made out of scrap wood with a polycarbonate panel I got at our local reuse center. It has a 45 degree angled top and is sited against a south facing wall. We rigged a bungee to hold the lid securely open against the wall. At night or during cold or stormy weather, the lid can be closed or propped partially open.
|Scrap plywood becomes the box|
|The back is covered with stretched plastic sheeting|
Moderating temperature inside is very important. If it is sunny, the lid should be open! I moved my hardy seedlings outside, when it was 36 degrees and sunny, and rapidly warming up. It could have been 36 and windy and cloudy and then I would have put them in the cold frame for protection. It is a balance between getting them sun, and protecting them from intense weather.
|Hardening myself off|
|Bungee to hold the lid all the way open against the wall.|
|South facing wall holds the heat|
|First night in the frame!!|