Design Your Own Modular Planter Layouts

Our Modular Kitset Corten Steel Planter Boxes are designed to give you complete flexibility in creating the perfect garden layout. Using the individual panels, you can design and build custom shapes and sizes to suit your space.

Here’s how the connections work:

• 90° Corners: No brackets are needed when panels are joined at 90°. The panel's edges match naturally to create strong corners.

• Length Extensions (180°): To join two panels in a straight line for a longer length, use the Length Extender Bracket. This provides a seamless and secure 180° connection.

• Outward 90° Corners (270°): To create an outward corner (effectively a 270° join), use the Corner Bracket for strength and stability.

With these simple components, you can build:

• L-shapes

• U-shapes

• Long straight runs

• Custom geometric layouts

Your creativity sets the limits—design planters that perfectly fit your garden or landscaping project.

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:

• Panel 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: 

• No Bracket needed for a 90° Join
• Length Extender Bracket ( 180° Join)
• Corner Bracket for Outward 90° ( 270°) 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!