Corten Planters

Why Choose Corten Steel Planters?

Corten steel often called weathering steel, is a remarkable alloy originally developed for its high CORrosion resistance and TENsile strength. When exposed to the elements, the surface naturally oxidises to form a stable, self-protecting layer of rust. Far from being a flaw, this patina is precisely what makes Corten garden planters so sought after: it seals the steel beneath, halting further corrosion and giving each planter its signature warm, autumnal tones of orange, russet and brown.

The result is a planter that combines industrial character with genuine practicality:

• Exceptional durability: Corten steel planters typically last 25 years or more, even in harsh, exposed conditions. The patina actually strengthens with age.
• Low maintenance: no painting, sealing or treating required. The protective layer even repairs itself if scratched.
• A living finish: your planter arrives pre-rusted, with the patina continuing to deepen and evolve naturally over time.
• Designer appeal: a longstanding favourite of garden designers and landscape architects, Corten pairs beautifully with ornamental grasses, architectural shrubs, paving and timber.
• Versatile and structural: ideal for defining borders, framing entrances, screening patios or creating raised beds for flowers, herbs and vegetables.

A Style and Size for Every Space

Whether you’re styling a compact courtyard or a large commercial scheme, our range of rusted steel planters has you covered. Explore long, narrow trough planters perfect for privacy screening and boundary planting, square and cube planters for entrances and patios, round and cylindrical Corten planters for softer schemes, and extra-large Corten steel planters capable of holding small trees and mature shrubs.

Need something specific? Our bespoke service lets you order made-to-measure Corten steel garden planters in almost any shape, size or steel thickness, ideal for awkward corners, rooftop terraces and ambitious landscaping projects.

How the Rust Patina Develops

Your Corten planter arrives pre-rusted, so you enjoy that sought-after weathered look from the moment it’s in place. The patina doesn’t stop there, though. It continues to mature and deepen over the months and years ahead, developing richer tones and a more varied surface texture that’s entirely unique to your planter and its environment.

A quick tip: while the patina continues to develop, some rust run-off can occur. If your planter sits on porous paving, stone or concrete, we recommend placing it on feet, a tray or a gravel border. Once the patina has fully stabilised, run-off becomes negligible.

Frequently Asked Questions

How long do Corten steel planters last?

With their self-protecting patina, Corten planters routinely last 25+ years outdoors, significantly outlasting timber, plastic and most powder-coated alternatives.

Will a Corten planter stain my patio?

Some run-off can occur while the patina continues to develop. Raise the planter slightly or position it over gravel during this period; once fully matured, staining is minimal.

Are Corten steel planters safe for growing vegetables?

Yes. Corten produces no toxic chemicals or pollutants, making it safe for edible planting, wildlife and pets. Many customers use our Corten raised beds for herbs and vegetables.

Do they rust all the way through?

No. The surface patina forms a barrier that protects the steel beneath, so your planter stays structurally sound for decades.