25 Cinder Block Garden Ideas and Designs for DIY Projects (2024)

25 Cinder Block Garden Ideas and Designs for DIY Projects (1)

Cinder block gardens are a great way to grow fresh vegetables and flowers in a small space. These blocks are inexpensive and can be used to create many different styles and patterns. We will show you how they can be used to create garden beds, planters, retaining walls, outdoor decorative accents, and more below.

Cinder blocks are made from cement and coal ash. Concrete blocks are made of a mixture of cement, sand, gravel, and cinders. Cinder blocks are on average 10 pounds lighter than concrete blocks, so keep that in mind when planning your next DIY project. These two types of blocks come in a standard rectangular shape.

25 IDEAS

These garden and patio designs are sure to inspire. Just look at the pictures!

On this page

  • 25 IDEAS
  • 1. Build a DIY Concrete Block Garden Bed
  • 2. Create a Cinder Block Garden Wall
  • 3. Paint Square Blocks to Make Colorful Flower Pots
  • 4. Use Stencils to Make Beautiful Cement Planters
  • 5. Encrust Cinder Blocks with Tile Mosaic
  • 6. Create Garden Edging
  • 7. Design a Garden Bed with Unique Shape or Style
  • 8. Fill Upcycled Cinder Blocks with Succulents
  • 9. Establish Property Boundry
  • 10. Setup Foundation for a Greenhouse or a Shed
  • 11. Construct Steps Down a Slope in Your Garden
  • 12. Decorate a Boring Garden Corner
  • 13. Build a Pyramid Planter
  • 14. Build a Garden Retaining Wall
  • 15. Use Cinder Block Caps as Pavers
  • Conclusion

1. Build a DIY Concrete Block Garden Bed

25 Cinder Block Garden Ideas and Designs for DIY Projects (2)

Image credit: Delia Creates

This raised bed uses concrete blocks covered in surface bonding cement and then painted with black patio paint. This inexpensively creates a high-end look without a high-end cost.

We like this option because the blocks will never have to be replaced due to rot; they will likely last decades. The paint can be done in any color that matches the patio decor, which is a nice bonus. Plus, having a flat-edged border provides a great place to sit and drink a cup of tea or plant vegetable seedlings.

2. Create a Cinder Block Garden Wall

25 Cinder Block Garden Ideas and Designs for DIY Projects (3)

Image credit: Dennis Yang via Creative Commons

A vertical garden is an excellent design idea. This one is so well done it looks like a work of art. The real beauty of DIY projects like this is their versatility and ease. The blocks are simply stacked in any eye-pleasing pattern and held there by their own weight, no mortar needed.

Here is a smaller-scale version of the vertical garden wall. This one is freestanding and planted in a stair-step design along a border. A well-done and functional piece of art!

3. Paint Square Blocks to Make Colorful Flower Pots

25 Cinder Block Garden Ideas and Designs for DIY Projects (4)

Image credit: Projects with Kids

This is a great DIY project to complete with the kids. Many different designs can be created with some bright acrylic paint and a little imagination. These blocks were striped with painter’s tape and then painted, but they could be drawn with pictures, animals, or flowers to spruce up the patio.

4. Use Stencils to Make Beautiful Cement Planters

This idea looks like so much fun. The cement blocks are first painted white. Afterward, a bright color is applied with a stencil and a flat stencil brush. We like the idea of using a different pattern and color on each side of the block. Grouped together, these make a picture-perfect border or focal point for the patio.

5. Encrust Cinder Blocks with Tile Mosaic

This DIY project takes a little bit more patience and skill, but it will be well worth it. Look at the beautiful work of art it creates! This look is created by nestling two rectangular cinder blocks side by side to form a square, then carefully adhering mosaic tiles in a unique pattern.

6. Create Garden Edging

The idea of creating a garden wall or edge with cinder blocks is not new, but this colorful take on the old theme is fresh and beautiful. We especially love the idea of placing the blocks hole-side up and using them as small flower pots. A long edge of bright flowers creates a tidy border without the weeds.

7. Design a Garden Bed with Unique Shape or Style

25 Cinder Block Garden Ideas and Designs for DIY Projects (5)

This DIY project creates a deep garden bed with three layers of blocks stacked in a unique design. Using flexible PVC pipe to create a pyramid-shaped trellis is a wonderful way to get pole beans, sweet peas, or clematis vines the room they need to grow vertically. When the vegetables or flowers fill in, this will create an eye-catching show.

25 Cinder Block Garden Ideas and Designs for DIY Projects (6)

Topping plain cinder blocks with fancy slate tiles is an affordable way to create a stylish raised bed. This will make for a comfortable seat, a surface to place tools, and look beautiful from any angle. A great way to take a simple vegetable garden up a notch!

25 Cinder Block Garden Ideas and Designs for DIY Projects (7)

Images credit: Growing Fruit

This simple wooden design helps keep water from filling the cinderblocks, a concern in areas with freezing winter temperatures. Pressure-treated lumber adds longevity to the wood and a quick-finished look to the vegetable garden or flower border.

8. Fill Upcycled Cinder Blocks with Succulents

25 Cinder Block Garden Ideas and Designs for DIY Projects (8)

These cinder blocks are painted orange to resemble terracotta, filled with lightweight potting soil, and planted with an assortment of lovely succulent plants. This is a great idea for areas with lots of hot summer sun!

9. Establish Property Boundry

25 Cinder Block Garden Ideas and Designs for DIY Projects (9)

This lovely concrete block border can be used for a flower or vegetable garden and does an excellent job marking the property line. We love the idea of an easy edge to mow against and a simple way to keep weeds out of the picture.

10. Setup Foundation for a Greenhouse or a Shed

25 Cinder Block Garden Ideas and Designs for DIY Projects (10)

Using concrete blocks as a foundation is a common practice, but placing them under a simple plastic greenhouse is a new idea. We love that the sun warms the blocks and releases heat to the tender vegetables during chilly weather. A great way to get a jump start on starting seedlings in the early spring!

11. Construct Steps Down a Slope in Your Garden

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Concrete blocks look like they were born to be stair steps, don’t they? This project uses blocks as a staircase down a steep hill and then tops them with indestructible composite decking boards. These stairs won’t be going anywhere!

12. Decorate a Boring Garden Corner

25 Cinder Block Garden Ideas and Designs for DIY Projects (12)

One of our favorite ideas is using full-size and half-size cinderblocks to create a lovely pyramid-shaped corner feature. The white painted blocks and simple backlighting create a vertical garden, and an art piece all rolled into one.

25 Cinder Block Garden Ideas and Designs for DIY Projects (13)

These decorative planters use mosaic tiles and blocks stacked in a corner pyramid to create a miniature garden.

13. Build a Pyramid Planter

It’s hard to believe that this fancy design requires no tools. Only forty 16x8x6 cinder blocks and paint. Well, and 75 pounds of topsoil!

Stacking them in a vertical pyramid takes advantage of space well; many vegetables or flowers can be grown in only a tiny space. This DIY project can be done in one afternoon and creates a garden feature like a work of art.

14. Build a Garden Retaining Wall

25 Cinder Block Garden Ideas and Designs for DIY Projects (14)

Cinderblocks are the perfect material for retaining walls. This project requires mortar and a 4-6 inch layer of base material underneath for support. This project will take skill and patience but will be well worth the time and effort.

15. Use Cinder Block Caps as Pavers

25 Cinder Block Garden Ideas and Designs for DIY Projects (15)

This project uses cinder block caps, which are solid blocks, to create a mini garden bed around a tree or bush. Four are used here to match the size of the stepping stones in this lovely patio design.

Conclusion

Cinder and cement blocks are versatile tools that can be used in various ways around the garden and patio. Due to their indestructible material, they are an excellent choice for long-lasting installations. The symmetrical and uniform shape lends itself to easy stacking and nice clean edges with straight lines. The absorbent surface holds paint well and creates lovely colorful art.

25 Cinder Block Garden Ideas and Designs for DIY Projects (2024)

FAQs

How many cinder blocks do I need for a 4x8 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!

How do you use cinder blocks in a garden? ›

Cinder blocks could be used in your garden to create raised bed, bench or any decoration. They are easy to work with and available at your local store.

How to make cinder blocks look nice? ›

If you're tired of looking at that plain cinder block wall on your property, you have plenty of options for giving it a facelift. For a quick and simple cover-up, try concrete or stucco. To give the wall a more unique character, consider stone wall veneer or climbing plants.

Can you build a garden with cinder blocks? ›

Fill the vertical holes of the cinder blocks with soil or drive a wood stake or a piece of rebar in the corners of your wall to secure the next level of blocks. An added bonus of filling your cinder blocks with soil is you create small, individual gardens.

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.

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.

What do you put on the bottom of a cinder block planter? ›

Here's How to Make a Raised Bed Garden with Cinder Blocks:
  1. Place the cinder blocks on the ground to form a rectangle (size optional). ...
  2. Lay down some weed fabric, cardboard, or newspaper, and add your soil to both the main bed and all of the holes in the blocks.
May 8, 2023

Do cinder blocks need to be filled with concrete? ›

As I usually do, I would suggest that you check with local building codes for the answer to that question. Filling cinder blocks with concrete depends: Structural walls: Yes, for stability and strength. Non-structural walls: Not always necessary, sand or gravel can add weight.

How to build a cinder block garden bed? ›

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 keep cinder blocks from sinking? ›

To prevent your concrete blocks from sinking, select ones rated for the load they will be bearing. Compact the soil before you lay down your foundation, and grade the soil around your foundation so that water drains away from it. By taking these steps, you can help keep your concrete blocks in place.

How do you strengthen a cinder block wall? ›

Filling cavities in the blocks with high-strength grout or concrete mix, using the recommended psi of filler, and employing Type S mortar for strong connections are all vital aspects of reinforcing the wall. It's also key to connect the whole wall via steel to the concrete footers.

What plants can 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.

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 for a 6 foot wall? ›

Number of Blocks

The typical cinder block is 8 by 16 inches, meaning that a cinder block covers an area of 1.125 square feet. The total cinder blocks needed will be the area of the wall divided by 1.125, but be sure to subtract the openings such as windows, doors, or any other architectural features.

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

  1. First determine the Width, Height, and Thickness of the Wall. ...
  2. Now the calculate the volume of the wall. ...
  3. The volume of the Openings. ...
  4. Subtract the volume of the Openings from Volume of Walls. ...
  5. Now calculate the volume of the concrete block with the Mortar allowance. ...
  6. Divide the total volume of a wall by volume of one block.

How do I calculate how many landscape blocks 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.

How many cubic feet does it take to fill a 4x8 raised bed? ›

If you're planning a 12-inch deep raised bed, you'll need approximately 24 cubic feet of soil to fill a 4x8 bed. A depth of 18 inches will require approximately 36 cubic feet of soil. The type of soil you use will also affect the volume required to fill your raised bed.

How much dirt do I need for a 4x8 raised bed? ›

For a 4x8–foot raised bed with a 10” height, about 1 cubic yard of soil is needed.

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