Raised Bed Garden Soil Layers - When vegetables that are growing in raised garden beds using the Square Foot Gardening approach, your beds will have to be sectioned off into one-foot segments called planting squares. Each planting square has an address used to identify the square.
While the options for addressing change, one of the simplest would be to make use of letters for columns and amounts for rows, along with the square is identified by the mix of the two. Numbering starts in the upper left corner and proceeds left to right, top to bottom. I've yet to find a commercially accessible garden bed with an enclosed feature for marking off planting squares.
I wish somebody would build a Square Foot Gardening grid that you can insert into a raised garden bed to mark off squares, but until that is accessible, if you prefer to use the Square Foot Gardening method, for marking off squares, you'll need to formulate your own personal strategy. Step one would be to figure out the measurements on the interior of the garden bed, which will be width and the length that's in fact useable for planting.
However , when you connect the planks in the corners, you lose several inches, or so the interior measurements of the garden bed are really a couple of inches short of the advertised size. In my instance, my beds have an interior measurement of 46.25 inches x 94 inches. I refer to these measurements as Usable Span for the balance of this informative article.