Extend Your Gardening Season: DIY Cold Frames for Northern Climates

Gardening in the north can be tough due to fewer warm summer days. One solution is using cold frames. These structures protect plants from early frosts and allow for an early spring start. They can also help potted seedlings adjust to outdoor conditions. Cold frames can be bought or built at home, offering a chance to customize and save money.

A permanent cold frame is one option. It can be used for many years and designed to fit a small garden bed. A basic frame can be built with standard lumber and covered with repurposed window sashes or lightweight Plexiglas. The windows can be angled towards the sun for better light exposure. The size can be adjusted as needed.

Another option is small cold frames or 'window boxes' made from repurposed window sashes. This is suitable for those who prefer smaller frames. The frame can be removed as needed, offering flexibility. However, this may not be practical if there are no available window sashes for reuse.

Straw bale cold frames are a simpler solution. They can be easily built by buying straw bales and arranging them around the garden bed. Transparent plastic sheeting is then placed on top. This method is quick and easy, though it may lack visual appeal.

Lastly, row covers can protect a large garden space and accommodate taller plants. They can be built using PVC pipe to create mini-greenhouse structures. Regardless of the chosen method, cold frames and similar structures can extend the gardening season in colder climates.

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