River Cottage Australia

How to Make Your Own Coldframe

Want to keep growing your greens well into winter? The easiest solution is to build  your very own cold frame.

A cold frame is a simple system that protects seedlings from the cold & wind, while at the same time
capturing the warmth of the sun to help them grow. It maintains a warm & damp environment that is
perfect for seed propagation. An added bonus of a cold frame is protection from flying bugs.

To construct the cold frame you’ll need;

  • An old window frame, with glass intact
  • 4 pieces of wood to make the base – these pieces should match the lengths of the window frame
  • Hinges for joining the base & the frame
  • Screws
  • Hand or circular saw
  • Electric drill

The process of construction is relatively simple. Pre-drill holes in your base lengths (pre-drilling will reduce the chances of the wood splitting when you screw into it). Screw the base lengths together until all 4 pieces are connected and you have a frame. Then line the window frame up and screw in your hinges; and that’s it, you’ve made yourself a cold frame.

The system can also be used to grow salad greens and other small vegetables all year round, particularly if you’re in a colder climate.  

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