Elevate your garden with timeless corten steel. Our modular planter boxes arrive flat-packed for easy assembly, weather naturally to a rich patina, and are built to thrive in NZ conditions.

Weather Beautifully. Last a Lifetime.

Transform your garden, patio, or landscape with our Modular Corten Steel Planter Boxes — proudly designed and manufactured in New Zealand for long-lasting performance and timeless beauty.

Crafted from architectural-grade corten steel, our planters naturally develop a rich, rusted patina that protects the steel from further corrosion — no painting, staining or sealing required. The clean lines and modern silhouette suit both traditional and modern gardens.

Why You’ll Love It

• Flatpack Design – Ships easily, assembles in minutes with supplied hardware
• Modular Sizes – Choose from multiple lengths or create your custom garden layout
• Durable & Low Maintenance – Rusts beautifully, no ongoing care needed
• NZ-Made – Engineered to handle Aotearoa’s rugged outdoor conditions
• Eco-Friendly – 100% recyclable steel, built to last decades

Product Details:

• Dimensions: Available in 400, 600, 800 & 1200mm Width

• Finish: Raw corten steel (naturally weathers to a stable patina)

• Assembly: Pre-lasercut holes, includes stainless steel bolts & nuts

Popular Uses

• Raised vegetable beds

• Native plant displays

• Outdoor feature borders

• Patio or deck planters

• Landscape architecture projects

Shipping: Flat-packed and shipped within 5-7 business days NZ-wide. Local pickup in Christchurch also available.

Design Tip:

Pair with our corten garden edging or laser-cut light pillars to create a cohesive outdoor design that evolves with the seasons.

Why Corten Steel?

Corten (weathering) steel is specially formulated to resist corrosion and surface damage. As it weathers, it forms a protective oxide layer that prevents further rusting — giving your garden a warm, rustic look without sacrificing durability.

Specifications:

• All corten steel planters are supplied raw with no patina. The patina will develop over time.
• All modular garden beds are for bottomless garden beds.
  

Panel Sizes: 

• 400 (Length) x 400 (High) mm 
• 600 (Length) x 400 (High) mm 
• 800 (Length) x 400 (High) mm 
• 1000 ( Length) x 400 (High) mm
• 1200 (Length) x 400 (High) mm 
  

Brackets / Joiners: 

• Length Extender Bracket
• Corner Bracket for Outward 90" Join

Also Included:

• M5 x 8 mm Bolts & Nuts
• 2 x 5mm Combination Wrench for Assembly

Assembly:

• Unpack the kit.
• Connect a short side to a long side using bolts & nuts.
• leave all nuts slightly loose.
• When all sides are connected tighten all the nuts.
• Fill & plant your new planter and enjoy!