Corten steel planters are a favourite among garden designers and green thumbs alike, thanks to their rich, rusted patina and modern industrial edge. Made from weathering steel, they’re designed to age beautifully over time — developing a protective rust layer that resists deeper corrosion. But while Corten planters are low-maintenance, a little care goes a long way to help them last and look their best.
1. Let the Patina Develop Naturally
When you first receive a Corten steel planter, it may appear raw or only partially rusted. This is normal. Woven Wood’s Corten steel comes pre weathered, so this should only rarely be an issue, however if the rust patina is not yet fully developed, exposure to moisture and air will help the steel form its iconic orange-brown finish. For best results:
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Place the planter outdoors in a well-ventilated area.
-
Avoid sealing or painting — this prevents the natural weathering process.
-
You can accelerate the patina by misting with a saltwater solution every few days.
2. Protect Surfaces from Rust Runoff
As the planter weathers, especially in early stages, rainwater may wash some rust particles down onto decking or paving. To prevent staining:
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Place the planter on gravel, stone, or bare soil where possible.
-
Use risers or pot feet to lift it slightly off the surface.
-
Add a drip tray or install a liner if placing on delicate surfaces like wood or concrete.
3. Avoid Prolonged Saturation
Corten is designed to resist corrosion, but it works best in cycles of wet and dry. Constant moisture can delay the protective patina or cause unnecessary wear. Make sure:
-
Drainage holes are clear and not clogged with soil.
-
Excess water doesn't pool inside or underneath the planter.
-
The soil mix is well-draining — avoid using pure compost or moisture-retaining fillers.
4. Winter Tips
Corten steel holds up well in all seasons, but during freezing months:
-
Check that water is not collecting in the bottom of the planter.
-
Raise the planter slightly to prevent it sitting in ice or snow.
-
If you’re in an area with heavy winter rain, consider sheltering it to slow runoff and protect surfaces nearby.
5. Interior Use? Use a Liner
Though Corten planters are mostly used outdoors, they can be brought indoors with the right setup:
-
Always use a watertight liner or inner pot to prevent rust leakage.
-
Do not allow water to sit in the outer container.
-
Wipe any rust marks promptly to avoid staining floors.
Conclusion
Corten steel planters are as durable as they are striking — and with minimal effort, they’ll only get better with age. Follow these simple care tips and you’ll enjoy a planter that evolves with your garden, offering both strength and style for years to come.
As Seen on ITV Gardening Club
Corten Steel Planters Care Guide
Corten steel planters are a favourite among garden designers and green thumbs alike, thanks to their rich, rusted patina and modern industrial edge. Made from weathering steel, they’re designed to age beautifully over time — developing a protective rust layer that resists deeper corrosion. But while Corten planters are low-maintenance, a little care goes a long way to help them last and look their best.
1. Let the Patina Develop Naturally
When you first receive a Corten steel planter, it may appear raw or only partially rusted. This is normal. Woven Wood’s Corten steel comes pre weathered, so this should only rarely be an issue, however if the rust patina is not yet fully developed, exposure to moisture and air will help the steel form its iconic orange-brown finish. For best results:
Place the planter outdoors in a well-ventilated area.
Avoid sealing or painting — this prevents the natural weathering process.
You can accelerate the patina by misting with a saltwater solution every few days.
2. Protect Surfaces from Rust Runoff
As the planter weathers, especially in early stages, rainwater may wash some rust particles down onto decking or paving. To prevent staining:
Place the planter on gravel, stone, or bare soil where possible.
Use risers or pot feet to lift it slightly off the surface.
Add a drip tray or install a liner if placing on delicate surfaces like wood or concrete.
3. Avoid Prolonged Saturation
Corten is designed to resist corrosion, but it works best in cycles of wet and dry. Constant moisture can delay the protective patina or cause unnecessary wear. Make sure:
Drainage holes are clear and not clogged with soil.
Excess water doesn't pool inside or underneath the planter.
The soil mix is well-draining — avoid using pure compost or moisture-retaining fillers.
4. Winter Tips
Corten steel holds up well in all seasons, but during freezing months:
Check that water is not collecting in the bottom of the planter.
Raise the planter slightly to prevent it sitting in ice or snow.
If you’re in an area with heavy winter rain, consider sheltering it to slow runoff and protect surfaces nearby.
5. Interior Use? Use a Liner
Though Corten planters are mostly used outdoors, they can be brought indoors with the right setup:
Always use a watertight liner or inner pot to prevent rust leakage.
Do not allow water to sit in the outer container.
Wipe any rust marks promptly to avoid staining floors.
Conclusion
Corten steel planters are as durable as they are striking — and with minimal effort, they’ll only get better with age. Follow these simple care tips and you’ll enjoy a planter that evolves with your garden, offering both strength and style for years to come.