11. Steel-Edged Corten Planter Beds with Linear Olive Trees
Introduction
Elevated Corten steel planter boxes bring an industrial yet warm earthy element into the landscape, establishing crisp lines and rich textural patina.
What This Idea Means
Custom-welded or modular Corten steel raised planter boxes lined along walkways or patio edges, planted with a uniform row of sculptural Olive trees underplanted with silver-hued ground covers.
How to Make It
- Order modular 14-gauge Corten steel planter troughs (typically 24 inches high by 18 inches wide).
- Position boxes on a level compacted gravel base or directly atop patio pavers.
- Coat the interior walls with a rubberized asphalt sealant to extend steel longevity while allowing the exterior to rust naturally.
- Fill with lightweight potting soil mixed with sand and slow-release fertilizer.
- Center dwarf or standard Olive trees (Olea europaea) at equal spacings.
- Underplant with trailing Silver Falls dichondra or blue-gray Curio repens.
Tips and Variations
- Accelerate Patina: Spray raw steel with a mix of hydrogen peroxide, white vinegar, and salt to trigger rust within 24 hours.
- Concrete Contrast: Position these rusty orange planters directly against crisp, off-white stucco walls for dramatic contrast.
- Winter Protection: In freezing regions, insulate the interior planter walls with rigid foam boards to shield root balls.