Steel

Steel isn’t just for skyscrapers. At Planters Unlimited, we’ve reimagined this alloy as the backbone of commercial landscaping, offering Corten and powder-coated steel planter boxes that can withstand decades of coastal storms, foot traffic, and artistic scrutiny. Whether you’re framing a luxury hotel entrance or anchoring a rooftop farm, these metal rectangular planters and steel flower pots merge raw durability with refined aesthetics. Choose between Corten’s ever-evolving rust patina or powder-coated crisp colorfast finishes. Both choices are impervious to warping, shrug off scuffs and scratches, and can handle extreme temperature swings without cracking.

The Metallurgy Behind the Magic

What gives these custom metal planters their unique look and durability? Corten Steel’s magic lies in what it doesn’t need⏤paint. When exposed to moisture, it forms a self-protecting patina that halts corrosion. These steel planter boxes’ living finish evolves from gunmetal gray to warm terra-cotta tones over time. (Pro-tip: You can accelerate the process with saltwater sprays for coastal projects.) 


Our powder-coated alternatives undergo a 5-stage preparation process that includes thorough cleaning and sandblasting, followed by the application of a rust- and corrosion-resistant powder finish. The result? A finish tougher than automotive paint⏤, scratch resistant, UV-stable, and available in a pristine white, matte black, and statuary bronze.


But it’s not just about looks. Both steel types are highly resilient and heavier than their fiberglass counterparts. That heft isn’t a burden⏤it’s intentional. The weight of these steel planter boxes helps stabilize trees in windy plazas and deters theft in high-traffic areas.

Customization Beyond the Cut Sheet

Need a massive 72”x72” Corten square for a civic monument? Or how about a slender 18”x60” powder-coated rectangle for a rooftop herb garden? Our metal rectangular planters are made-to-order, with lead times beating almost all competitors by weeks. 


These custom metal planters and steel flower pots come with so many customizable options beyond size, including:


    •   Drainage: You can get pre-drilled holes for parks or watertight liners for indoor atriums.

    •   Anchoring: We can weld steel tabs for concrete bolt downs and add recessed forklift pockets.

    •   Finishes: We’ve coated steel planter boxes in municipal greens for city parks, metallic coppers for tech campuses, and more.

 

Of course, this is just a small list of the possible customizations we can do with our planters.

Why Steel Dominates High-Stakes Projects

Let’s be honest⏤, budgets get approved faster when longevity is proven. You can rest easy that our steel planters have been thoroughly stress-tested beyond normal standards. 


On top of that, maintenance is a non-issue. Corten requires no upkeep beyond occasional debris removal. Powder-coated units clean up with a garden hose⏤, no scrubbing, salt residue or bird droppings. For urban areas, this matters. Essentially, these steel planter boxes are long-lasting, easy to maintain, and visually appealing.

Ready to Upgrade to Steel?

Are you ready to experience the difference our Corten steel and powder-coated planters make? Request a quote today, and we’ll get back to you fast! If you have any questions about our steel collection, the customization options we offer, or our other planters or products, don’t hesitate to contact us.