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Quality cold frames
The cold frame, so useful for hardening plants started in a hot bed or in a mild climate for raising seedlings, is within the reach of every home gardener. The most convenient size is a box-like structure, 6 feet wide and say 9 or 12 feet long. Keeping the length in any multiple of 3 feet permits the use of the standard 3 x 6 feet hot bed sash.
A cold frame provides protection for plants from adverse weather conditions, mainly excessive wet or cold weather by creating a micro-climate through wind protection and soil and air insulation. This cold frame tanalised wood finish for a higher Degree of weatherproofing.
A raised bed / cold frame combo – perfect for people who have difficulty bending or are in a wheelchair.
The frame should be 12 inches high in the back, sloping down to 8 inches in the front. This slope is for securing a better angle from the sun’s rays, and should be faced towards the south. The Cold Frame is similar to a hot bed except that no manure is used. The plants require more ventilation in a cold frame than in a hot bed, but as it is best to keep the soil rather dry, should not receive so much water. Fill the interior with good potting soil, and pile a little earth up against the outside of the frame to keep out the cold air. If only required for hardening off or for raising plants in seed boxes, the floor of the frame may be covered with small cinders. A greenhouse sash, as suggested above, or canvas, may be used as a covering. For raising seedlings in seed boxes proceed as recommended (see Seed Boxes) and place the seed box in the frame. This is not feasible for early seedlings of tender plants, such as Tomato, Melon, Marrow, etc., but will splendidly work well in the Winter for raising Cabbage, Lettuce, Brussels Sprouts, etc.