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The plan of the cold box is the most important affair to keep in mind if you want it to be an efficient tool for grow crops in the winter . Though it may seem like a complex task making a structure to shield against the wintertime chill , it ’s a lot sluttish than you recall . you may observe all of the materials you require at your local hardware store or re - aim from what you already have around your M .

The following is an excerpt fromFour - time of year Harvestby Eliot Coleman . It has been adjust for the web .

Any cold frame intent that protects flora will attend you well . To be gratifying to utilise , however , the invention must be simple , attractive , pleasant to work with , and dependable . Having tried them all , we settled on the traditional design . The simplest cold soma is a orthogonal wooden box seat , 8 feet tenacious and 4 feet front to back , with a slight slope to the Dixie . We build them out of 2 - inch lumber to make them strong , but 1 - inch gunstock would be enough . Three 8 - foot boards are necessary : two board 12 inches wide of the mark and one board 8 inch wide-cut . One of the 12 - in - wide boards is used for the back wall . The 8 - inch - wide plank is used for the front bulwark . The 2nd 12 - in board is cut into two 4 - ft pieces , which are each tailor diagonally lengthwise so that they are 8 column inch wide at one end and 12 in spacious at the other .

cold frame with sprinkler system

It is well-fixed to put the frame together with the boards sit on a flat surface and the diagonal cut bound of the side bulwark face up . When you do this , you will notice that the bottom boundary of the form is mat , whereas the upper edge has a slight discontinuity where the slanted swing meets the front and back wall . In ordering for the lightness to sit down on the compressed surface , you should turn the skeletal frame over before using it . Any discontinuity of the other edge is then hidden by liaison with the grunge . The frame will cant slightly to the south , allow more light to go into .

tie a 4 - foot - long 2×2 to what is now the top . This piece extends across the midsection of the frame , go front to back . You will require to cut notches in the top of the front and back walls so this cross opus sits flush with the top . This helps keep the sides spaced and also provides a handle that one person can use to lift the empty underframe and carry it to a novel location . If you use 1 - column inch Mrs. Henry Wood , you might require to set more of these stiffeners across the frame .

We habituate standard pine or spruce up for our frame . We purposely do not apply treated wood , nor do we cover the frames with a preservative . Even the supposedly good products should not be used in close law of proximity to nutrient crops . Wood rots where it is in middleman with the earth , however , so we attach a funnies of scrap woods about 1 inch fatheaded to the bottom edge of the frame of reference where it touches the soil . In a few year , when this flight strip begins to decompose , we supplant it with another . The rest of the untreated woods frame will last for many old age .

We also do not paint the frame of reference . Yes , if the Interior Department were whitened , it might reflect a little more light than the grey weathered woods , but paint is just one more complication . Rather than having to grate and paint every few eld , it ’s good to keep thing simple .

Build Your Own Cold Frame : Get a Jump on the Planting Season

make Your Own Cold Frame , Part 3 : Get a Jump on the Planting Season

Four-Season Harvest

Organic Vegetables from Your Home Garden All Year Long , 2nd Edition

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