What Is the Best Height for Raised Garden Beds

The height of raised garden bed has a significant impact on plant growth and garden layout. Vegega metal raised beds are available in 11", 17", and 32" heights, each suited to different planting needs and garden layouts. For example, the 11" tall raised bed is better suited for shallow-rooted plants, while the 17" tall bed is ideal for general vegetable gardening. For deep-rooted plants, a 32" tall garden bed provides plenty of room for roots to grow. Choosing the right height for your garden bed can make your gardening more comfortable and efficient. Here's a look at which height garden bed is best for you!

11-inch Deep Raised Garden Beds

11-inch deep raised garden beds grow plants

The 11" deep metal raised garden bed is suited for growing shallow-rooted plants such as lettuce, strawberries, and herbs. These shallow-root plants can grow healthily in a lower planter bed without the need for additional soil depth. For gardeners who like to grow herbs but have a small backyard, this raised bed is ideal.

Furthermore, the 11-inch garden bed uses less soil and filler material than taller beds, making it more cost-effective.

 It's suitable to place the 11-inch garden bed on the ground. Because annual plant roots do not extend beyond the first few inches of soil. 11 inches of soil retains moisture, attracts worms, and promotes microbial activity, which quickly loosens the existing topsoil.

17-inch Deep Raised Garden Beds

17-inch deep raised garden beds filling with soil

The 17-inch deep metal raised bed is suitable for growing most vegetables and medium-rooted plants. Lettuce, carrots, tomatoes, eggplant, and kale, for example, all grow healthily in a raised bed of this height. Compared to 11-inch raised beds, 17" beds provide plants with more ample root space to thrive.

The 17" garden bed is easy to maintain on a daily basis while avoiding the discomfort of bending over. Due to its perfect height, the soil retains water better, and it's a bit more cost-effective because of its relatively low investment in materials and costs compared to 32" tall garden beds. 

Besides, the first choice for filling 17-inch garden beds is to use the Hügelkulture filling method. On the contrary, 11-inch garden beds are not suitable for this filling method.

32-inch Deep Raised Garden Beds

32-inch deep raised garden beds growing plants

The 32-inch deep metal garden bed is suited for gardeners who need a large space for growing plants that require deep root space, such as potatoes, corn, and large radishes. These types of plants have deeper root systems and are able to grow healthier in deeper layers of soil. Higher raised beds provide the ideal depth of soil for deep-rooted plants, ensuring that the plants are able to fully absorb nutrients and water.

Especially, the 32" tall garden bed reduces the need to bend over for planting and maintenance, making it ideal for people with back disturbance or limited mobility. In addition, the 32-inch height also allows plants to take full advantage of deeper soil layers, which supports the growth of deep-rooted plants.

Overall, the 32" tall bed prevents root restriction because of inadequate soil in traditional in-ground plantings and improves soil permeability and drainage.

How to Choose the Right Height for Your Raised Bed

metal raised garden beds in backyard

Choosing the right height for your raised beds is key to ensuring healthy plant growth and gardening efficiency. Here are a few important factors to consider when choosing the height of the raised beds:

Selection according to plant type

  • Shallow-rooted plants: such as lettuce, strawberries, and herbs, which have shallow root systems and usually require a shallower layer of soil. In this case, an 11-inch deep garden bed is sufficient.
  • Medium-rooted plants: such as carrots, tomatoes, and eggplants, which have deeper root systems but don't require a very deep soil layer. 17-inch deep garden beds are suitable.
  • Deep-rooted plants: such as potatoes and corn, need a deep layer of soil to support the root system. 32-inch deep raised beds are the best choice.

Selection according to gardening needs

If you want to keep your tulip garden fresh for as long as possible, here are a few tricks you can use:

  • Budget: 11-inch raised beds cost less. 17-inch and 32-inch raised beds are more expensive in filling, but they can provide better growing conditions for your plants, especially for those crops that need more soil depth.
  • Ease of Maintenance: Taller beds (e.g., 32 inches) offer greater convenience, reduce the frequency of bending, and help to reduce the physical strain of long-term planting, especially for the older people or those with back problems.
  • Planting Yield: A taller bed (especially 32 inches) can accommodate more plants, so it has the potential to provide higher planting yields when space permits. Also, it's especially suited to gardeners who wish to do large-scale planting.
  • Personal gardening needs: If you're a beginner, it's recommended to start with an 11-inch or 17-inch garden bed. Because these heights are easier to manage and maintain. For experienced gardeners, 32-inch deep garden beds offer higher yield potential and more planting space.

Overall, the 11-inch deep metal raised beds are more cost-effective in terms of soil costs than the 17-inch and 32-inch deep metal raised beds. The cost savings can also be used to purchase other gardening supplies or fertilizer. But we can't overlook the fact that 17-inch and 32-inch high garden beds don't require bending and don't put stress on your knees or back.

Besides, there is also a common misconception that gardens need a certain depth of soil to grow deep roots. In reality, however, the roots for your plants will grow down into the “unworked” soil on the ground beneath your raised beds. The root structure for most vegetables tends to sprawl horizontally at a downward angle rather than straight down. No need to dig the soil beneath the bed, either.

Conclusion

Choosing the right height for your raised garden beds depends on the type of plants and your personal needs. 11-inch, 17-inch, and 32-inch deep garden beds each have their own benefits, and by choosing the right height for your environment, you can maximize your planting results.

Pick Your Raised Beds

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