Choosing the right material for your raised garden bed can be tricky since there are so many options out there. Traditionally, materials such as wood, galvanized steel, or plastic have been used. However, Corten steel is emerging as a new alternative that gardeners can consider.

Corten raised garden beds have a range of advantages over other materials that make them a compelling choice. The Corten planter box is becoming an increasingly common fixture in gardens.

In this article, we’ll discuss everything you need to know about Corten steel along with comparing it with other popular materials.

What is Corten Steel and How is it Used?

Corten steel is a proprietary material that is a type of steel alloy. It is made of iron, phosphorus, copper, chromium, and nickel. What makes Corten steel special is that there is no need to paint it to help protect the material from decay.

Corten steel naturally develops a thin layer of rust which prevents it from deeper corrosion. Unlike regular iron, which will keep rusting until it fails, Corten steel is protected by its rust against further corrosion.

It is becoming an increasingly popular choice as a garden fixture since it is durable, beautiful, sustainable, and helps plant growth. Gardeners can procure ready-made Corten steel raised garden beds that are available in various shapes and sizes. Otherwise, they can opt for custom-made beds as well.

How Does Corten Steel Compare with Other Materials?

Wood 

Wood is a natural material that is also quite affordable and sustainable. However, wooden beds can only last for a few years and need to be constantly replaced and looked after. The lifespan can be even lower in areas that have harsher climate conditions.

In contrast, Corten steel can last for at least a couple of decades, however, it is more expensive compared to wood. Corten steel becomes the more cost-effective choice over its lifespan but comes with a higher initial investment.

Galvanised steel 

Both galvanised steel and Corten steel offer benefits such as high durability and a pleasing appearance while having a similar cost structure. The primary difference between the two is sustainability. Corten steel is a highly sustainable material because it’s completely recyclable, adding to its environmental credentials.

Plastic

Plastic is a lightweight alternative that is cost-effective and can also last for decades. However, plastic beds need to be handled carefully since they can become brittle over time and experience cracks.

In contrast, Corten steel is a very hard material that can withstand the elements and even rough usage. Another difference is sustainability with plastic being non-biodegradable while Corten steel can be 100% recycled.

Why Use Corten Steel?

Weather Resistance

As mentioned earlier, Corten steel is a special type of steel that forms a layer of rust that protects the material from further corrosion. This layer of rust acts as a protective barrier and also protects the material from the elements such as excess cold, excess heat, and the rains.

Versatility

Corten steel garden beds are considered to be highly aesthetic because they provide a unique look. This warm rustic orange look goes well with a variety of design styles such as minimalist, modern, or naturalistic.

Resistance & Durability

Corten steel is a type of steel, hence, it can last for many decades. While the upfront initial cost may be higher than wood or plastic, it makes up for it by being many times more durable.

Further, Corten steel does well despite harsh weather conditions and is much more resistant to extreme temperatures and frequent rainfall.

Once the rust patina of the steel has formed, it requires virtually no maintenance such as painting or sealing. 

Helps Plant Growth

Corten steel absorbs heat which keeps the soil warm. This can help plant growth since they thrive in warmer temperatures. The material is also especially useful for backyards located in colder climates.

How to Use Corten Steel in Your Backyard?

As mentioned, these raised garden beds are available as ready-made products in different sizes and shapes. It’s likely that you can find the right product for your backyard layout without any hassle.

However, it’s possible that your backyard has unique size and shape requirements which may not be available in a store near you. If so, you can also consider custom-made raised beds that can be procured by making a special order at your store or by hiring a steel designer.

Apart from standard rectangles, the material can be shaped into curved beds, tiered systems, or integrated with other materials.

Wrapping Up 

Overall, Corten steel can be a good choice for your raised garden bed if you’re looking for durability, sustainability, and a pleasing look. However, it can require a higher initial investment.

Every material has its own set of pros and cons, so consider your unique needs before making a choice.