
Moderna Planter in Corten Steel: low square and rectangle boxes for a clean modern edge
The Outdoor Plus Moderna planter is a low, straight-sided Corten steel box for patios, entryways, and raised beds. Choose a 20, 24, or 30 inch square or a 48 or 60 inch rectangle; most stand 14 inches tall and the 30 inch square is 20. Corten steel weathers to a rust-colored finish on its own, with no paint to chip, and the largest box holds nearly 12 cubic feet of soil.
It arrives ready to fill and plant, made in the USA. Prefer a raised, tapered look? See the Tuscon planter. The Moderna planter ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Specifications
SKU: OPT-PMDR4824 | OPT-PMDR6024 | OPT-PMD2014 | OPT-PMD2414 | OPT-PMD3020
Items Included: Corten Steel Planter
OPT-PMDR4824 | Dimensions: 48″ x 24″ | Height: 14″ | Soil Usage: 9.25ft^3
OPT-PMDR6024 | Dimensions: 60″ x 24″ | Height: 14″ | Soil Usage: 11.75ft^3
Items Included: Corten Steel Planter
Quick Specs
OPT-PMD2014 | Dimensions: 20″ x 20″ | Height: 14″ | Soil Usage: 3.25ft^3
OPT-PMD2414 | Dimensions: 24″ x 24″ | Height: 14″ | Soil Usage: 4.75ft^3
OPT-PMD3020 | Dimensions: 30″ x 30″ | Height: 20″ | Soil Usage: 10.5ft^3
FAQ
Why is the Moderna planter supposed to rust?
Because that is Corten weathering steel doing its job — the surface oxidizes into a rich rust-orange patina that then seals and protects the steel beneath. The Moderna is designed to be installed raw and left alone while it develops that warm, architectural finish naturally.
What sizes does the Moderna line include?
Five: rectangles OPT-PMDR4824 (48 by 24 inches, 9.25 cubic feet of soil) and OPT-PMDR6024 (60 by 24 inches, 11.75 cubic feet), plus squares at 20, 24, and 30 inches holding 3.25 to 10.5 cubic feet. Heights run 14 to 20 inches.
Will the Moderna planter leave rust marks on pavers?
It can early on — as the Moderna’s patina forms, rain can carry rust runoff onto light-colored concrete or pavers. Plan for it: pre-weather the planter elsewhere, set it over gravel or planting beds, or use a protective barrier until the oxide layer stabilizes.
What should I plant in a big steel trough?
The Moderna’s rectangles are natural hedging troughs — grasses, boxwood, bamboo screens for privacy — while the squares suit specimen shrubs or layered seasonal mixes. With up to 11.75 cubic feet of soil in the 60-inch version, real root systems have room.
Does the rust ever eat through the steel?
No — that is the entire genius of weathering steel. The oxide layer the Moderna forms is protective, not destructive: it seals the surface against further corrosion instead of flaking away like rust on ordinary steel. It is the same material used in bridges and sculpture.
Can it tie into a fire feature visually?
Very naturally — Corten’s warm rust tone is a designer favorite alongside flame. Pair Moderna planters with a gas fire pit and the rusted steel picks up the fire’s glow, giving the whole space one warm industrial-modern accent color.
What is included when I order?
The Corten steel planter itself, in your chosen Moderna size — soil and plants are not included. There is no assembly, wiring, or plumbing involved; placement is the installation. Remember it arrives unweathered, so the signature patina develops after delivery, on your site.