Design & Build Your Own - Modular Planter - 400mm High

Build a custom NZ-made Corten steel raised bed in minutes — modular flatpack panels, long-lasting weathering steel.

Here’s how the connections work:

• 90° Corners: No brackets are needed when panels are joined at 90°. The panel 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.

** Our Design tool will automatically include all components (panels & joiners), hardware & spanners. **

Why Choose Our Corten Steel Planters?

Transform your outdoor space with a durable, architectural garden bed designed for New Zealand conditions.

• Premium Corten Steel – Forms a protective rust-like patina that prevents corrosion. 

• Low Maintenance – No painting, sealing, or upkeep required

• Modular Design – Create endless shapes and sizes

• Flatpack Shipping – Easier handling 

• Clean Modern Look – Complements both contemporary and rustic landscapes

Assembly

Assembly is straightforward and designed for DIY installation.

1. Bolt panels together using supplied fixings
2. Leave bolts slightly loose during initial assembly
3. Square up your planter
4. Fully tighten all bolts with supplied spanners

Frequently Asked Questions

Does it arrive already rusted?
No — it arrives as raw steel and develops a protective patina naturally over time.

Does it include a base?
No — the planter is bottomless to allow proper drainage.

What tools do I need?
All required tools are included.

How long will it last?
Corten steel is designed to last for decades outdoors.