How to make a cold frame
A cold frame is an ideal way to start a vegetable garden, so you can grow your own young vegetable, fruit and herb plants. The cold frame protects the young seedlings from bad weather, and provides more warmth under the glass cover. It’s also suitable for use on your balcony or patio.
You can use your cold frame all year round. From March onwards, you can move the seedlings which you’ve germinated indoors on the windowsill into the cold frame, where they can continue to grow. In autumn, it’s time to plant vegetables which you can pick in the winter. And in the summer you can leave the glass cover off and you’ll have a great seedbed in which to root your cuttings. Your cold frame is also ideal to let seedlings that you’ve germinated indoors acclimatise to outdoor conditions, including sunlight and outdoor temperatures. But don’t forget to remove the glass cover on the first sunny days (or to move the cold frame to a shady spot), so your seedlings don’t get burnt. In frosty weather you should place a straw mat or something similar over the glass cover to protect your plants from the cold.
Place your cold frame in a sunny spot, where it’s sheltered from the wind and facing south, then your plants will be able to grow well even in cold weather.
- Planks 2 cm thick and 20 cm wide
- Planks 1,5 cm thick and 4,5 cm wide
- Lengths of wood 45 x 45 cm or 45 x 70 cm
- Galvanised screws
- Plexiglass or window glass
- 3 hinges
- 4 L-shaped metal brackets