Garden Swing Bed Cushions - When growing vegetables in raised garden beds using the Square Foot Gardening method, your beds will have to be sectioned off into one-foot segments called putting squares. A 4x4 foot garden bed, for instance, will have 16 planting squares (because there are 16 square feet in a 4x4 bed). A 4x8 foot garden bed will have 32 planting squares. Each putting square comes with an address used to identify the square.
One of the simplest would be to use letters for amounts and columns for rows while the means of addressing vary, along with the square is identified by the combination of the two. Numbering beginnings in the upper left corner and goes left to right, top to bottom. As an example, putting square A1 is the upper left hand square (1st column, 1st row), while putting square C4 is the square in the 3rd column and the 4th row. I've yet to find a garden bed that is commercially accessible with an enclosed feature for marking putting squares off.
I wish somebody would build a Square Foot Gardening grid which you can insert into a garden bed that is raised to mark off squares, but until that is accessible, if you would like to use the Square Foot Gardening method, for marking off squares you'll need to devise your own method. The very first step is to calculate the measurements on the inside of the garden bed, which can be the length and width which is truly useable for planting.
But when you join the planks in the corners, you lose several inches, therefore the interior measurements of the garden bed are actually a few inches short of the advertised size. In my own instance, my beds have an interior dimension of 46.25 inches x 94 inches. I refer to these measurements as Useable Span for the balance of the article.