Commercial COR‑TEN Weathering Steel Planters

Highly regarded in the design industry for its distinctly transformative surface, COR-TEN Weathering Steel Planters naturally develop a weather-resistant patina that showcases a rich, rust-like layer of beauty in rooftop planters, planter boxes, outdoor trough planters, and more.

Stylized Oxidation

Weather-Resistant

Naturally Vibrant

Whether your design calls for outdoor modular planters or planter edging designs, PureModern's COR-TEN Weathering Steel Planters bring an upscale, rusted aesthetic while offering exceptional durability and weather resistance for exterior spaces.

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Cultivate Style That Enriches Every Unique Space

PureModern COR-TEN Weathered Rusted Steel Planters Are Naturally Water-Resistant and Frost-Resistant

COR-TEN, or Corten, is a naturally oxidized steel alloy that is highly sought after for outdoor projects due to its unique look and weather resistance. COR-TEN is designed to resist corrosion with a protective patina that forms on the surface. This stable rust-like appearance makes them a stylish option for enduring moisture and the elements without losing their strength. 

When you first receive your COR-TEN planter, it’ll have the look of raw metal and will begin to patina into bronze once placed outside. By request, we can speed up the patina process by pre-treating your planter before shipment, but it will need to go outside once you receive it to complete the oxidation process. 

Before purchasing planters made from COR-TEN weathering steel, be aware that they will most likely bleed onto the supporting surface after heavy rain or watering. The structure still must be designed so that rainwater does not drain from the metal onto surfaces where staining would be visible.

Buy COR-TEN Steel Planters 

There is no one-size-fits-all formula for creating the perfect outdoor space. We can custom manufacture any type of planter you are interested in and color-coordinate them to match your decor. With our completely customizable planters, we’ll craft a solution that’s tailored to your needs. Click here to learn more about ordering custom planters in the size and color you need.

Corten Steel Planter Boxes

COR-TEN Weathering Steel Planters: Options & Key Features

Naturally Weather-Resistant: Observe how COR-TEN Weathering Steel forms a protective patina over time, creating a unique rust-like appearance that shields the planter from moisture and harsh elements. This natural oxidation process enhances both the durability and visual appeal of your outdoor space.

Patina Process: Your COR-TEN Weathering Steel Planter will arrive in a raw steel state and develop its characteristic bronze patina when exposed to the outdoors. For faster results, pre-treatment options are available upon request to jumpstart the patina, but final oxidation will occur outdoors.

Surface Staining: COR-TEN Weathering Steel Planters may cause surface staining due to runoff after heavy rain or watering. It's important to design your project with this in mind.

Application Possibilities: These planters are perfect for a variety of outdoor settings, including urban rooftops, shopping centers, condos, medical facilities, industrial parks, retail complexes, warehouses, senior living facilities, trucking and distribution centers, schools, colleges and universities, business campuses, government buildings, parks, and more.

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Frequently Asked Questions: COR-TEN Weathering Steel Planters


  • Any mention of patina refers to our products made of COR-TEN Weathering Steel. Patina is an important process for COR-TEN Weathering Steel, which gets its name from its corrosion resistance (COR) and tensile strength (TEN).

    For COR-TEN Weathering Steel to become fully corrosion-resistant, it undergoes a patina process. The steel changes from a raw metal look (in which the color of the steel is gray) to a patina (where the metal turns orange-brown).

    To patina, the planter needs to be in the elements. COR-TEN Weathering Steel planters should only be outdoors and uncovered. It is important to note that when the planter goes through the patina process, the metal can bleed onto the surrounding surface.

    After this transition, the weathering process of COR-TEN Weathering Steel is complete. The steel is now resistant to corrosion and perfect for many outdoor climates. Note: COR-TEN Weathering Steel Planters must be at least two kilometers away from large bodies of saltwater, as saltwater can erode this material.

    If you love the look of COR-TEN Weathering Steel but do not think the material will work for your needs, we recommend using Powder-Coated Aluminum Planters in Weathered Rust finish. Aluminum Planters are a commercial alternative that mimics the look of COR-TEN Weathering Steel.

Incorporate products into your plans quickly and easily by downloading our design files from Design Hub.

Design Hub is developed specifically for design professionals with the goal of getting manufacturer-specific product information into their working plans.

What to Expect When Partnering With PureModern

Whether you need square, rectangle, round, or tapered planters, enjoy our seamless selection and ordering process.

Request a Quote

Depending on the project's scope, you will receive a quote within 24 to 48 hours.

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Discuss Your Project

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Planters are manufactured to your exact specifications and shipped on time so you can meet project deadlines—our Done-Right Guarantee ensures it.

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COR-TEN Weathering Steel Planters

Finally, a reliable planter manufacturer that values your projects as much as you do.

We know that you work hard to uphold your reputation and need visually stunning design solutions to maintain it. Stop wasting time on mediocre companies and inferior products, and instead, create an empowering partnership with us at PureModern—an innovative planter manufacturer. With top-notch commercial-grade planters and exceptional customer service, we promise to provide transparent communication to ensure a seamless process from start to finish.