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To make a cold frame start with an old, salvaged window or windows or a clear door, such as a shower door. If you can't get one, use a sheet of glass or twinwall polycarbonate secured to a simple wooden frame. To fix the lid to the frame you will need some strong hinges, and if you wish you can also add handles.
Thereof, how do you use a cold frame?
4 Ways to Use a Cold Frame
- Overwintering dormant plants. In a sunken cold frame, the ground insulates and the sun gives warmth, but you still need to eliminate pockets of cold air that can harm overwintering plants.
- Giving seedlings an early start.
- Hardening off young seedlings.
- Extending the season past frost.
- Place the pallet on the ground.
- Use two pieces of 23cm x 5cm timber for the cold frame's sides.
- For the front of the cold frame, take two lengths of 15cm x 5cm timber, screw one to the front of the pallet and attach the other on top.
Consequently, what is the best position for a cold frame?
Place your cold frame somewhere sunny and sheltered, so plants and seedlings get as much light and warmth as possible. A patio provides a stable surface; at an allotment, a few flagstones will do the trick. Or position it on top of the soil, using it as a large cloche when sowing or planting directly into the ground.
In agriculture and gardening, a cold frame is a transparent-roofed enclosure, built low to the ground, used to protect plants from adverse weather, primarily excessive cold or wet. The transparent top admits sunlight and prevents heat escape via convection that would otherwise occur, particularly at night.