Steel Planter Boxes
Construct beautiful modular gardens with Straightcurve® steel planters. Employing the same quality engineering and materials as the popular edging and raised bed systems. Easy-to-build, off-the-shelf solutions, or customised planters for the perfect fit.
Rigid provides both crisp, straight, or subtle curved, edges and boarders with the same adaptability as Flex.
Range Available in…
Straightcurve® is available in two finishes; Weathering Steel and Galvanised Steel
Weathering Steel
Weathering steel (sometimes referred to as Corten steel), is an intentionally oxidised steel alloy. It forms a stable, protective layer of rust when exposed to the elements, eliminating the need for painting while providing long-term structural durability.
Unlike standard carbon (mild) steel, which continues to rust until it degrades structurally, weathering steel creates a dense surface oxidation layer (a patina). This patina seals the underlying metal from moisture, oxygen, and atmospheric pollutants ensuring structural integrity for decades, even in damp environments. Refer to the Straightcurve® longevity guide for more information.
Galvanised Steel
Protected by a hot-dip zinc coating, galvanised steel offers superior weather resistance and long-term durability without ever requiring a coat of paint. Where standard carbon steel breaks down through destructive rusting, galvanised steel relies on sacrificial protection—the zinc shell corrodes in place of the base metal, continuously sealing it against dampness, air, and soil pollutants. The result is total structural integrity built to last for decades.
This finish is also suitable for painting and powder coating, allowing you to customise your Straightcurve® installation.
Order Planter Kits
Order Custom Planters
Build your own planter boxes using the Straightcurve® range of Zero-Flex panels, available in both Weathering & Galvanised Steel finishes.
Need help selecting configuring your planter?
Use the Straightcurve® Planter Box Configurator.
