12 Amazing Cinder Block Raised Garden Beds (2024)

There are limitless ways to grow a garden, and one of our favorites is in raised beds. Raised bed gardening has manybenefits over other growing options.

Because the soil is not continuously getting stepped on, it stays loose and well-drained, and raised beds are simply easier to plant and maintain since they are off the ground. Raised beds can also deter some pests – like gophers and rabbits – from reaching your precious plants.

Raised beds can be made from all kinds of materials, but I love the idea of using cinder blocks because they have many advantages of their own. First, they won’t deteriorate like wood and other materials will.

Second, they are built to stack, so it is easier and quicker to create a raised bed with blocks than with most other materials. Just stack them in any shape you want, fill with dirt, and plant.

And third, they are cheap. You can buy them at most home improvement stores and you can often find them for free from places like Craigslist and Freecycle.

Need a little inspiration? We’ve gathered up 12 examples of different ways gardeners are using cinderblocks to build raised beds.

12 Raised Garden Beds Made With Cinder Blocks

First, we haven’t found any cinder block garden beds more practical than these incredible grow beds built by Jon Hughes. These can be seen on his YouTube channel.

In most of his cinder block beds, Jon plants a variety of vegetables in the center and onions in the perimeter holes. He grows enough food to donate a huge amount to his local food bank.

I love the fact that Jon utilizes the holes in the blocks for plants. I could see this method being useful for creeping plants as well, as a way to keep them confined to specific areas.

A quick view of my garden, that will give you ideas of what is possible with almost no-work,my garden is all automatic and just about weed free. Nobody and I mean nobody, gets the production that I get from my garden…I have 1397 square feet of garden beds, and I get 12,000 lbs of Fresh Organic Vegetables each year to donate to the Food Bank and to friends who want to eat the best food ever grown 😉 – Jon Hughes


Casey from Oklahoma Gardening demonstrates step-by-step how cinder blocks can be used to build these raised garden beds. She uses the holes in the blocks to insert PVC pipe, creating an easy, handy hoop house over the beds.

In this example, the hoops are used for cover cloth to keep squash bugs off the plants. This is a great idea for crops prone to pests, and could also be used to protect sensitive crops from the elements and to extend your growing season.

These stunning raised beds, seen at the 2004 San Diego National Convention Garden Tourare built witha combination of cinder blocks and pressure treated logs.

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San Diego National Garden Tour 2004

One of the great things about using cinder blocks is that you can easily make your planting beds as high as you want. Think of them as gardening Legos! A bed this high may not provide many additional benefits to the plants, per se, but it would definitely be an easy garden to maintain.

Texas gardeners Christine and Richard Alcorta use cinder block beds to combat the problem of rocky soil in their yard. They grow an abundance of vegetables and herbs in these easy-maintenance grow beds. Via Central Texas Gardener.

I love this idea from Gardening-4-Life – super simple, single-layer cinder block beds with herbs on one side, veggies on the other, and mulched pathways. Beds like these provide a nice divider between planted areas and pathways.

This beautiful L-shaped garden nicely utilizes the corner space beside this home. This was shared by Ellie0505 on the Square Foot Gardening Forum. Ellie grows an incredible amount of food in this small space, including tomatoes, strawberries, and peppers.

12 Amazing Cinder Block Raised Garden Beds (9)

Cinder block square foot garden in Washington | Square Foot Gardening Forum

One of the most beautiful gardens I have seen that utilizes cinder block beds is this one from justmeandher112 on YouTube. They have several different types of raised beds in their garden space, but I particularly love these 2-layered block beds.

12 Amazing Cinder Block Raised Garden Beds (10)

Justmeandher112 | YouTube

12 Amazing Cinder Block Raised Garden Beds (11)

Justmeandher112 | YouTube

See the video of the evolution of this garden space to fully appreciate the amount of work that went into creating this amazing garden!

These double-layered block beds by Lloyd Kahn make a nice, productive, gopher-resistant garden space. He grows a nice mixture of vegetables, herbs, and flowers.

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Image: Lloyd Kahn

For a touch of whimsy, Grow and Resist made mosaics on the edges of her cinder block beds. What an awesome idea! See her blogfor the whole start to finish process of making these.

And lastly, masteRoman DIY on YouTube shows how he replaced his rotted wood garden beds with these beautiful cinder block raised beds. See his full process in the video below.

12 Amazing Cinder Block Raised Garden Beds (14)

masteRoman DIY | YouTube

12 Amazing Cinder Block Raised Garden Beds (15)

12 Amazing Cinder Block Raised Garden Beds (2024)

FAQs

How many cinder blocks do I need for a garden bed? ›

20 blocks will give an interior bed area of 4′ x 8′. Leave a side open to bring in the soil until the new bed is filled. No mortar or special installation is necessary unless you desire a bed which is higher than 8″ raised over the surrounding area. Just set them on the ground!

Is it safe to use cinder blocks for raised beds? ›

There is also little research data on this topic. Ultimately, this becomes a personal choice based on your comfort level. If you plan to use blocks as a raised bed material -- and many people do – and you are concerned about potential risks, you could seal the blocks with polymer paint.

How long do cinder block garden beds last? ›

Although it costs more to create these concrete raised beds, they are pretty permanent. We plan to use ours for over 20 years, so our pro-rated cost per bed over time (for both soil and blocks) is under $18 per year.

How do you make a raised garden bed with cinder blocks? ›

How to Build a DIY Cinder Block Garden Bed
  1. Calculate the Dimensions. A typical cinder block is 8 x 8 x 16 inches. ...
  2. Mark Off the Area. ...
  3. Prepare the Ground. ...
  4. Arrange the Cinder Blocks. ...
  5. Add Another Layer of Blocks (Optional) ...
  6. Fill Perimeter With Dirt. ...
  7. Fill With Topsoil and Plant.
Feb 27, 2024

How do you calculate how many cinder blocks you need? ›

After you have found the square footage of both your wall and your block, determining the number of blocks you need is as simple as dividing the wall square footage by the block square footage. If you're using a standard 8″ x 8″ x 16″ block, find the number of blocks needed by dividing the wall square footage by 0.89.

How many garden blocks do I need? ›

You could measure the perimeter of the space and divide it by the length of the blocks. For example, if you are using 10” long blocks (0.83 foot) and your perimeter measurement is 180 feet: 180 / 0.83 = 216.87 blocks. Round up to the nearest whole number.

What are the cons of cinder block? ›

The Cons of Cinder Block (CMU) Foundation

Concrete masonry units are heavy to handle. 8-in blocks weigh 36lbs, 10-in blocks weigh 42lbs. A CMU block wall often requires installing an air and moisture barrier, which adds another trade and more labor to the foundation project.

How deep should a raised garden bed be? ›

Vegetable Beds: On the other hand, when it comes to vegetable beds, the bed must be approximately 12 to 18 inches deep to ensure adequate depth for the roots of your plants. This is especially important if your raised bed is placed on cement or the patio, which will inhibit roots from growing deeper into the ground.

What causes cinder blocks to deteriorate? ›

Freezing and Thawing

While concrete appears to be a solid and long-lasting substance, it is nonetheless porous and will absorb water. The cement binder is forced apart when the water that has been contained inside the concrete freezes.

Will plants grow in cinder blocks? ›

I planted each of these cloves in its own cinder-block hole. Each one will grow into a full bulb. I also planted two bunches of basil, two bunches of cilantro and one bunch of oregano. Each of these grows in its own cinder-block hole as well.

Which raised beds last longest? ›

On the other hand, cedar wood or redwood has a natural resistance to rot. Beds made with these materials will last longer; the catch, of course, is that they are more expensive. Long-term lifespan is perhaps the number 1 quality that metal raised beds have going for them.

Do cinder blocks leach chemicals into soil? ›

Most studies have found that the chemicals do not leach from concrete, they are tied up in the cement matrix. This includes fly ash (which has mercury and other heavy metals).

Can you make a raised garden with concrete blocks? ›

This raised bed is made from concrete blocks and topped off with timber sleepers to provide extra seating space, invaluable in a small garden. With basic DIY skills, plus a couple of spare weekends, you'll soon have a 2.2m x 1.4m raised bed that will provide space for ornamental and edible plants for years to come.

Are cinder blocks good for gardens? ›

Stay away from old-fashioned cinder blocks, which may contain heavy metals—not a good thing for food gardens.

Can I use cinder blocks for a bed frame? ›

Use cinder blocks. Not only do they work wonderfully as a bed frame, but they also provide under-the-bed storage at the same time. Using cinder blocks allows you to choose exactly how far off the ground you want your bed to be.

How many cinder blocks do I need for a queen size bed? ›

Buy 10 Cinder block Stones for a Queen Size. (Again, depending on how you want to place the stones you may even buy more. But 10 is minimum.

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