Content
- Cold frame heating without electricity - so it succeeds
- Starting signal falls in autumn - tips for preparation
- So the cold frame comes to its natural heating - instructions for the filling
- Tips
If you heat your cold frame, you can reap very early in the year
Cold frame heating without electricity - so it succeeds
Why connect expensive power sources if the cold frame can be heated by natural means? With a de-energized natural heating you create a pleasant microclimate in the cold frame, when it is still too cold in the garden for planting. This guide explains how to do it.
Starting signal falls in autumn - tips for preparation
Since the electroless cold frame heating is associated with digging, preparations should be made as early as autumn. Thanks to this, you will be spared exhausting shoveling in the frozen ground during the spring. How to do it right:
You can put the self-made or purchased cold frame over the pit until next spring or cover the deep hole with sturdy wooden planks.
So the cold frame comes to its natural heating - instructions for the filling
When the lighting conditions improve in February, the first seeds can be sown in the cold frame. To produce the required germination temperature of 18 to 22 degrees Celsius, fill the prepared pit like this:
Seal the cold frame and leave diligent microorganisms to work. Within 8 to 10 days, the decomposition process releases a natural heat from which to benefit seeds, seedlings and young plants. This heater serves its purpose for a period of one year. Freshen up the filling every spring to naturally heat your plants in the cold frame from February.
Tips
If the spring comes with biting frost, sometimes the thermal output of the natural heating is insufficient. If your cold frame is a construction of refractory double-skin sheets, simply put in a flickering grave light or tealight as an additional heat source.