how deep should a vegetable planter box be

how deep should a vegetable planter box be

Vegetable Planter Box Depth Guide

Growing your own vegetables in a planter box can be an enjoyable and rewarding experience. To get the best results from your planter box, it is important to determine the optimal depth for your specific plants. Here, we provide a guide for what you need to know about planter box depth.

Factors To Consider When Determining Planter Box Depth

  • Size of the Vegetable – Smaller vegetables can get away with shorter planter box depths. Larger vegetables, like tomatoes, may need more space to develop.
  • Soil Type – Depending on the type of soil you choose, too little or too much space can cause problems for your vegetables.
  • Pests and Diseases – Having a larger planter box can limit the success of pests and diseases that can affect your vegetables.
  • Weather Conditions – Be aware of your climate and adjust the planter box depth accordingly. Drier climates may need less depth, while wetter climates may need more.

Recommended Planter Box Depths

Here is a general guide for the recommended planter box depths for different types of vegetables:

  • Carrots – Approximately 8-10 inches
  • Radishes – Approximately 6 inches
  • Peas – Approximately 8 inches
  • Potatoes – Approximately 12-15 inches
  • Tomatoes – Approximately 18-24 inches

It is important to keep in mind that these depths are just guidelines. In some cases, you may need to adjust the planter box depth for certain vegetables based on your soil type and climate.


Before planting vegetables in your planter box, it is important to first determine the ideal depth for the vegetables. It is recommended to use the above guidelines as a starting point, before making adjustments for your particular climate and soil type. With a properly prepared planter box, you can start growing your own delicious vegetables in no time.

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