3 Foot Tall Raised Garden Beds - When growing vegetables in raised garden beds utilizing the Square Foot Gardening approach, your beds should be sectioned off into one-foot sections 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). A 4x8 foot garden bed will have 32 planting squares. Each planting square has an address used to recognize the square.
While the methods for addressing change, among the simplest is to utilize letters for amounts and columns for rows, and also the square is identified by the mix of the two. Numbering beginnings in the upper left corner and proceeds 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 and also the 4th row. I've yet to locate a garden bed that is commercially accessible with an enclosed feature for marking off planting squares.
I wish somebody would develop a Square Foot Gardening grid that you can fit into a raised garden bed to mark off squares, should you wish to use the Square Foot Gardening approach, but until this is accessible, for marking off squares you will need to formulate your own procedure. The first step will be to figure out the measurements on the inside of the garden bed, that is the length and width that is in fact useable for planting.
However , when you connect the planks in the corners, you lose a few inches, so the interior measurements of the garden bed are really a couple of inches short of the advertised size. In my case, my beds have an interior measurement of 46.25 inches x 94 inches. I refer to these measurements as Useable Span for the remainder of the post.