Tiered Raised Garden Bed Kit - When vegetables that are growing in raised garden beds using the Square Foot Gardening method, your beds should 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). A 4x8 foot garden bed will have 32 planting squares. Each planting square has an address used to spot the square.
While the methods for addressing vary, among the most straightforward is to use letters for amounts and columns for rows, along with the square is identified by the mix of the two. Numbering starts in the upper left corner and goes left to right, top to bottom. I've yet to find a garden bed that is commercially available for marking planting squares off with an enclosed feature.
I wish somebody would build a Square Foot Gardening grid which you can fit into a raised garden bed to mark off squares, but until this really is available, in case you'd like to use the Square Foot Gardening approach, you will need to devise your own personal procedure for marking off squares. Step one will be to compute the dimensions on the interior of the garden bed, which is width and the length that's actually usable for planting.
But when you connect the boards at the corners, you lose a few inches, therefore the interior dimensions of the garden bed are really a few inches short of the advertised size. In my own case, my beds have an interior dimension of 46.25 inches x 94 inches. I refer to these dimensions as Useable Length for the rest of this particular article.