How Deep Should a Planter Box Be for Herbs?

Herbs are a great addition to any garden, and planter boxes are an easy way to grow them. But how deep should the planter box be in order to ensure that your herbs have enough space to thrive?

Depth Requirements for Herbs

The depth of the planter box will depend on the type of herb you are growing. Generally, most herbs require a minimum of 6-8 inches of soil depth in order to grow properly. This is especially true for larger herbs such as rosemary, thyme, oregano, and sage. For smaller herbs such as chives, parsley, and cilantro, a 4-6 inch depth should suffice.

Additional Considerations

In addition to the soil depth requirements, it is important to consider the size of the planter box itself. The size of the box should be large enough to accommodate the root system of the herb without overcrowding it. If you are planting multiple herbs in one planter box, make sure that there is enough room between each plant so that they can all get adequate sunlight and air circulation.

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