Steel
Blend stunning good looks and enduring resilience with the large metal planters crafted by Planters Unlimited. Transform your spaces with the distinctive character of steel. Shop our collection today.
The Benefits of Steel
Steel isn’t just for skyscrapers. At Planters Unlimited, we’ve reimagined this alloy as the backbone of commercial landscaping, offering Corten steel and powder-coated large metal planters 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.
Dominating High-Stakes Projects
Our large metal planters deliver budget-meeting longevity. They’re impervious to warping, shrug off scuffs and scratches, and can handle extreme temperature swings without cracking. There’s no upkeep beyond occasional debris removal – clean them up with a garden hose.
Metallurgy Magic
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. It’s a living finish that evolves from gunmetal gray to warm terra-cotta over time. (Pro-tip: Accelerate the process with saltwater sprays for coastal projects.)
Our powder-coated alternatives undergo a 5-stage preparation process. The result? A finish that’s:
• Tougher than automotive paint
• Scratch-resistant
• UV-stable
More Than Looks
Both steel types are highly resilient and heavier than their fiberglass counterparts. That heft isn’t a burden – it’s by design. The weight of these large metal planters helps stabilize trees in windy plazas and deters theft in high-traffic areas.
Standard & Customizable Options
Need a massive 72”x72” Corten square for a civic monument? Or a slender 18”x60” powder-coated rectangular planter for a rooftop herb garden? Our large metal planters are made to order, with lead times beating almost all competitors by weeks.
Ready-to-Order Steel Flower Pots/Planter Boxes
• Corten Steel: Raw finish, pre-patina available.
• Powder-Coated: Semi-gloss finish in Statuary Bronze, Textured Black, or Pristine White.
• Corten & Powder-Coated Square: From 18” to 72” square, up to 60” tall.
• Corten & Powder-Coated Metal Rectangular Planter: Lengths from 30” to 120”, widths from 12” to 42”, heights from 18” to 48”
Customize More Than Just Size
• Drainage: Pre-drilled holes for parks or watertight liners for indoor atriums.
• Anchoring: Welded steel tabs for concrete bolt downs.
• Recessed Pockets: For forklift access.
• Finishes: Custom coatings to match the branding of municipalities, schools, businesses, and more.
Of course, this is just a small list of the possible customizations we can do with our planters.
Durable Excellence From Planters Unlimited
Commercial designers turn to Planters Unlimited to deliver high-quality, durable products that suit a wide range of landscape applications. With dozens of standard finishes, sizes, and colors to select from, we make it easy to find the perfect pieces for your projects.
Are you ready to experience the difference our Corten steel and powder-coated large metal 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.
Frequently Asked Questions
What are the advantages of steel planter boxes?
Our large metal rectangular planters offer remarkable durability and stability, all while providing stunning aesthetics. These commercial planters resist cracking and warping, and their substantial weight makes them a perfect fit for outdoor areas where wind is an issue. They’re theft-resistant, too.
What is the difference between Corten steel and powder-coated steel?
Corten steel is a unique material that develops a self-protecting patina as it ages. While its color and finish evolve to look beautifully weathered, Corten actually avoids corrosion. On the other hand, our powder-coated steel planter boxes are finished with a corrosion-resistant powder that’s tougher than auto-grade paint. This makes them exceptionally resistant to scratching and the harmful effects of UV rays.
How do I maintain steel planters?
Because of the way we fabricate our pieces, our custom metal planters are easy to care for. Since the natural weathering of Corten is one of its best features, these units don’t need to be scrubbed clean. Just remove debris as needed. For powder-coated planters, only an occasional rinsing is required.
Is it hard to reposition steel planter boxes?
While the weight of steel planters can be a big advantage, they are more challenging to install and move around than other planters. If you expect to reposition yours frequently, you can order your planters with recessed forklift pockets to make the process easier. You might also consider our fiberglass or fiberstone planters if you want lighter weight with solid durability.
Should I add drainage to a steel planter?
If your planters are outdoors, adding drainage is recommended. It prevents standing water and helps deep-rooted plants thrive. And if you get a lot of rainfall, drainage holes are a smart addition. Indoors, it’s better to skip the drainage to avoid damaging your flooring.
Do I need a liner for a steel planter?
If your custom metal planters are strictly outdoors and you’ve added drainage holes, then no. A liner would prevent excess moisture from draining away from the soil. For indoor placement, liners can help protect the surrounding spaces and make it easier to lift out plants for repotting. We offer liners designed to fit metal rectangular planters and a range of other shapes and styles.
Can custom metal planters be placed in full sun?
Yes. While steel tends to absorb heat when it's in direct sunlight, it doesn’t have to harm your plants. Choose a deep planter to provide plenty of insulation from the soil. Lighter finishes will help protect your plantings and keep steel flower pots cooler to the touch.