How to Build a Garden Retaining Wall


If you’re planning to build a retaining wall for your garden, there are many materials and methods to choose from. Learn more about the costs and the design of your retaining walls. The life expectancy of your retaining walls will be increased if you use the right materials. If you’re building a garden retaining wall for a specific area, consider a boulder wall.

Building a retaining wall

Before you start laying down retaining wall blocks, you will need to dig a trench. The trench should be at most half the length of one block. Next, spread paver base material on the trench and compact it with a trowel. Once the trench has been filled, you can begin to place retaining wall blocks.

Pre-cut concrete blocks can be purchased at home improvement stores like Lowe’s or Home Depot. These blocks are lightweight and easy to assemble. However, concrete blocks can be expensive, so you may want to consider another option if you want a DIY option.

Depending on the style of the retaining wall, you can choose between concrete or stone. The former is more natural and will allow the walls to be filled with appropriate drainage. The second uses cement to join the stones. For a more decorative appearance, you can choose to use timber or stone.

To create a stronger vertical wall, you can also use rebar. Rebar should be back-set to a depth of about 3/4″. You can also choose specially made stones that don’t require rebar. You can also use reinforcement pins for small walls. Cap blocks can be added to the wall. They should be slightly angled to promote drainage and provide a drip edge.

A boulder wall is another option for garden retaining walls. This natural stone retaining wall is made from large rocks that resemble granite and is aesthetically pleasing. This retaining wall can also be used as a raised garden bed. The boulder wall is a focal point in a residential front yard and helps to reduce soil erosion.

Whether you choose to build a garden retaining wall yourself, or hire a professional, you’ll need to evaluate the area where you want the retaining wall to be located. A professional contractor will have greater experience and be able to better estimate your needs. They will also consider the slopes of the walls from both sides.

In the end, the benefits of a garden retaining wall are clear. It will not only look great, but it will also protect your home’s foundation against runoff damage. You can also make your garden more functional with it. You can easily build a retaining walls with interlocking blocks in just a weekend. Although building a retaining wall is a challenging project, most homeowners can manage it. It will take hard work and willingness to get dirty, know retaining walls adelaide cost.


There are many materials available to you when building a garden wall. Bricks and stone are options if you want to achieve a natural look that matches your home’s exterior, or you can choose plastic lumber for something modern. Plastic lumber has the advantage of being more natural than other materials and can be made into many shapes and sizes.

Concrete blocks are another option that is affordable. Concrete blocks are inexpensive and easy to use. However, you will likely have to hire a mason to install them. Concrete blocks are strong and lightweight, but not as durable as other materials. While wood is cheaper than many other materials, you will need to buy pressure-treated lumber to ensure it will last for a long time. Even if you choose to use wood, it’s important to remember that the wall will have to be supported by a gravel footing.

Timber is another popular material to use for retaining walls. It is easy to install and offers structural integrity. These walls can last up to 20 years. If you use wood, however, you should be aware that the wood tends to rot after some time. Timber pillars are also bulky, so they may not be the best choice for more complex designs. Nonetheless, they do look good and can be combined with other materials to create the perfect retaining wall for your property.

Your soil will determine the final decision. You will need to consider drainage options if your soil is clay-based. Clay tends to be weak when wet, so if you’re planning on using clay in your garden retaining wall, you will need to install an additional drainage system behind the wall. You can use downspouts behind the retaining wall to funnel water away from the area. But you should avoid perforated pipes.

If you’re looking for an easy-to-install garden retaining wall, textured concrete block is a great choice. This versatile material is easy to use and has many benefits. It can serve multiple purposes, such as defining a patio or separating a raised herb garden. It can also be used to provide seating near a firepit. There are many commercially available concrete blocks. These include natural stone and man-made interlocking block. These products are perfect for retaining walls and other backyard projects.


The cost of building a garden retaining wall depends on the material used. Certain materials are more costly than others. Concrete block, for example, costs about $20 per square foot. Rammed earth and chalk are also available. A precase concrete wall can be as expensive as $25 per square foot. Another important factor is the cost of labor.

A base course may be required depending on the location of the retaining walls. It must be level and have a 4-6 inch base. If the base course is difficult to access, this will add to the overall cost. If the foundation of the wall isn’t even, this may also add to the cost.

Before construction can begin, a retaining wall needs extensive preparation. Clearing land can cost anywhere from $500 to $1,000 per annum. The cost will also depend on the size of the site. If the terrain is difficult, it can cost as much as $1,500 per acre. Tree removal can also be costly, with a tree costing approximately $385 per tree.

It is a good idea to get at most three quotes when looking for a contractor. A company with a portfolio of projects, as well as insurance and licensing, is a good choice. A detailed estimate will help you budget your project and get the best results. You can negotiate with them in order to meet your expectations.

The materials used to construct a garden retaining wall can vary greatly. Choose the materials that are right for your space and budget. While some materials may be more expensive initially, they can last for many decades. Depending on the size of the wall and the type of materials used, the price of the wall will vary.

When choosing the material, make sure you choose one that has good drainage capabilities. If it isn’t able to withstand the pressure of water, a retaining wall will collapse. If water is allowed to build up at its base, it could topple.


A garden retaining wall can add a unique design element to your yard. Unlike a traditional fence, garden walls aren’t designed to hold the weight of the soil, but rather, they add a unique and elegant touch to your home’s design. With the right design, you can create a garden wall that’s full of colorful flowers or shrubs that will brighten the day and enhance the look and feel of your home on a daily basis. While picking out the right material for your garden wall, make sure to consider environmental concerns as well. Due to their chemical content, railroad ties or treated timber have been criticized for being used in retaining walls. Also, keep in mind that concrete or flat walls do not allow proper drainage.

One way to add character to your garden retaining wall is by choosing a brick pattern. Bricks that match your home’s exterior can be a great choice for a garden wall. Different types of stone and different colors can add visual interest to your property. Using bricks that match the style of your home will also create a seamless look throughout the property.

Using a retaining wall to add design features will increase the value of your home and make it look more attractive. A garden wall can add height to your landscape, divide a garden into separate zones, and provide additional support for plants, landscaping adelaide south. A garden retaining wall can also be used to create terraced areas, which are perfect for growing flowers.

Another great option for creating a garden retaining wall is to use a block wall. These walls can be tall and simple, but they are also sturdy enough to hold back mountains of soil. Most home centers carry a variety of block sizes and colors. Some of the larger blocks are designed with built-in lips that improve the wall’s strength and help counteract heave.

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