What Garden Grids do I use for a 4x12 garden bed?
For a 4x12 area, 2-4x6 Garden Grids and our multi-Garden Grid connection manifold (to connect the two together) may be your best option, this will cover ~44"x~11'1". If your garden bed measures a full 12ft on the interior, a 4x6 and 4x7 Garden Grid and a manifold would be your best fit. This would measure ~44"x~12'. The manifold allows you to connect the two neighboring Garden Grids together so they can both run off of the same water supply, while also letting you control each Garden Grid's water flow independently from the other.
You can find the manifold here and all Garden Grid sizes here.
If you have any extra planting area outside of the perimeter of the Garden Grids, you can simply twist the tubes around so they spray outward and water that extra garden space. Here's a quick video about this.
Note: Always check the interior dimensions of your garden bed before ordering, just to make sure this is a good fit. Garden beds are most often solid in nominal dimensions, meaning the listed dimension is usually not exact, but a close representation of the actual dimensions. For instance, your 4x10 garden bed may have a planting area of 45"x9'6". This is because garden bed materials are sold in nominal dimensions (for example a 2x4 board isn't 2"x4", it's actually 1.5"x3.5"). Garden beds are also made of varying thicknesses making their interior planting areas smaller the thicker they are.
If you don't have a garden bed yet, or you're planning to expand your garden area, consider our top-rated, Metal Raised Garden Beds! Garden In Minutes® Raised Beds feature industry-leading durability. They have our super-corrosion resistant AZM coating, they're finished and USDA-certified food-safe paint, use food-safe hardware, and they're perfectly sized for & include our Garden Grid watering system & our Garden Grid Manifold with water flow adjustment valve. You can find them here.