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3mm Corten Steel Planters

Turn heads in your garden or terrace with a rustic steel planter that ages beautifully and lasts for decades.

The 3mm Corten Steel Planters are built for durability and visual impact in modern landscapes. Made from thick, pre-weathered Corten steel, these planters develop a protective rust-like patina over time, creating a warm, industrial finish that blends beautifully with natural surroundings. 

Each planter is fully welded with smooth edges and crafted in-house by the Online Metal Store team. Choose between a fully assembled version or a flat-pack component kit for easier handling and installation. Designed for architects, designers, and homeowners who want strength, elegance, and zero maintenance.

Choose a variant:

Starting at £600.00
excluding shipping cost

Features + Benefits

  • Made from 3mm thick pre-weathered Corten steel

  • Develops a natural rust-like patina over time

  • Fully welded with smooth corners for a clean finish

  • Resistant to corrosion and built for long-term outdoor use

  • Ideal for contemporary gardens, terraces, and commercial projects

  • Supplied fully assembled or in kit form for easier transport

  • Heavy-duty construction adds stability and security

  • Fabricated in Essex by the Online Metal Store team

  • No painting or coating required

  • Maintenance-free and naturally weather-resistant

Specs & Options

  • Material: Corten Steel (pre-weathered)

  • Thickness: 3mm

  • Finish: Natural patina (no coating required)

  • Assembly Options: Fully welded or flat-pack kit

  • Weight: Approx. 24kg per metre

  • Fire Rating: Non-combustible

  • Lead Time: 2 weeks

  • Custom Options: Bespoke sizes available on request

Installation / Usage Instructions

If delivered in kit form, follow the provided installation guide. Place on a level surface and allow natural exposure to the elements for continued patina development. No sealing, painting, or coating is required. Avoid using indoors or in enclosed areas where water drainage may be restricted.

Looking for a low-maintenance, high-impact planter with a weathered steel finish?

Our 3mm Corten steel planters bring strength, elegance, and longevity to any landscape. Order now or speak to the Online Metal Store team for custom sizes or project guidance.