Raised Garden Bed Material Options - When growing vegetables in raised garden beds using the Square Foot Gardening method, your beds will need to be sectioned off into one-foot segments called planting squares. A 4x4 foot garden bed, for instance, will have 16 planting squares (because there are 16 square feet in a 4x4 bed). Each planting square comes with an address used to identify the square.
One of the most straightforward would be to use letters for numbers and columns for rows while the options for addressing vary, and also the square is identified by the mix of the two. Numbering beginnings in the upper left corner and goes left to right, top to bottom. As an example, planting square A1 is the upper left hand square (1st column, 1st row), while planting square C4 is the square in the 3rd column as well as the 4th row. I have yet to find a commercially available garden bed with an included attribute for marking off planting squares.
I wish somebody would create a Square Foot Gardening grid that you can insert into a raised garden bed to mark off squares, if you prefer to use the Square Foot Gardening process but until this is available, you'll need to formulate your own method for marking squares off. The very first step will be to compute the measurements on the interior of the garden bed, which will be width and the length that is in fact useable for planting.
The 4x8 foot garden beds I bought, for example, are 4x8 feet from end to end. However , when you connect the boards at the corners, you lose a number of inches, so the interior measurements of the garden bed are really a couple of inches short of the advertised size. Within my instance, my beds have an interior dimension of 46.25 inches x 94 inches. I refer to these measurements as Useable Length for the balance of the informative article.