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Square Link Flat-Pack Corten Steel Planter (Without Base)
Designed for difficult-Access gardens
Flat-pack for easy delivery and on-site assembly
Our planters are delivered flat-packed making them easy to carry through narrow gates, side passages and tight access. Assemble on-site quickly and easily with the included fixings.
Fits Through Narrow Access
Designed to fit through tight spaces where welded planters can’t.
Ideal For roof terraces & courtyards
Perfect for landscaping projects with restricted access or weight limits
Supplied with all fixings and instructions for quick on-site installation
Easy self assembly
Made from durable weathering steel that develops a beautiful rich patina
Premium Corten Steel
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Characteristics
The Square LINK corten steel planter will add warmth and boldness to any garden, thanks to the orange-brown patina on the metal. This patina is formed by a natural layer of rust. Another name for corten steel is weathering steel: weather conditions have a positive effect on this planter.
Corten steel is a metal alloy made by adding copper, phosphorus, silicon, nickel and chromium to iron. When exposed to air, the material forms a protective layer of rust. This natural coating prevents further corrosion, extending the planter's life.
SPECIFICATIONS:
5-year guarantee.
Corten steel planters are very robust, hard-wearing, weatherproof, low-maintenance and durable.
The corten steel has a standard thickness of 1,5 or 2 mm.
This product is delivered ready for self-assembly, making it ideal for placement around an established tree or plant.
Includes bolts, nuts and assembly instructions.
Products are delivered without rust. The corten steel rusting process takes about 4-5 months, depending on weather conditions.The rust can be fixed by applying Owatrol. This is a penetrating rust inhibitor that forms a protective anti-rust coating. Owatrol protects the planter and stops the rust on corten steel flaking off.
We do not recommend using corten steel within 2 km of a coastline. See our blog post “Corten Steel and Coastal Sites” for more info.
KEY POINTS OF INTREST
Products should be unpacked immediately upon receipt to release any moisture trapped inside the packaging. If the product is left in its packaging, it may develop uneven rust patches.
Ensure proper drainage.
Do not use hydro pellets: they retain moisture.
We do not recommend using corten steel within 2 km of a coastline.
The weathering process may cause rust run-off.
PLANTING ADVICE:
Fill the bottom of the planter with a layer of gravel (Ø35 mm grading, approx. 10 cm).
Place a permeable anti-root membrane over the gravel.
Cover the membrane with soil suitable for your chosen plants.
Square Connect Self-Assembly Planter – Modern & Space-Smart Design
Designed for contemporary outdoor living, the Square Connect planter combines minimalist style with practical versatility. Its double-turned edge delivers a robust yet refined look, while the simple self-assembly design makes it perfect for urban spaces where flexibility matters.
Why the Square Connect Corten Steel Planter Works Perfectly for Balcony & Rooftop Gardens:
Lightweight & Easy to Transport – Flat-pack design makes it ideal for carrying upstairs or through tight spaces.
Space-Efficient Assembly – No bulky pre-built planters; assemble it right where you need it.
Customizable Layout – Arrange multiple planters as privacy screens, windbreaks, or modular greenery walls.
Sleek & Sturdy – The reinforced edges withstand wind and weather, even in elevated spaces.
Designed for gardens with difficult access
Unlike welded planters, our flat-pack Corten steel planter can be carried through narrow side passages, gateways and restricted-access gardens before being assembled on site. This makes it ideal for courtyards, roof terraces, urban gardens and landscaping projects where large fabricated planters simply cannot be delivered.
The bottomless design also makes this planter ideal for olive trees, ornamental trees, shrubs and large planting schemes where unrestricted root growth is important.
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Yes. Unlike traditional welded planters, this planter is supplied flat-packed for easy transportation and assembly on site. It is ideal for narrow side passages, restricted-access gardens, courtyards and roof terraces where large fabricated planters cannot be delivered.
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Yes. The planter is supplied flat-packed and is designed for straightforward assembly using the supplied fixings. Full assembly instructions are included.
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Yes. The bottomless design allows roots to grow directly into the ground while retaining the appearance and benefits of a raised planter. This promotes healthy root development and natural drainage.
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These planters are ideal for ornamental grasses, shrubs, olive trees, multi-stem trees, perennials and larger planting schemes where unrestricted root growth is beneficial.
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Yes. The flat-pack design makes transportation and installation much easier in locations with limited access, including roof terraces, courtyards and urban gardens. Bases for the planters can also be purchased separately.
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Yes. We offer an optional pre-weathering service which accelerates the natural rusting process before delivery. This allows you to enjoy the distinctive Corten steel appearance immediately rather than waiting for the steel to weather naturally.
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Yes. We offer an optional Corten steel varnish coating. This helps stabilise the weathered appearance, reduces rust transfer onto surrounding surfaces and can help maintain the desired finish.
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The weathering process typically begins within a few weeks and develops over several months depending on local weather conditions. Wetter environments generally accelerate the process.
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Corten steel develops a protective outer patina that helps protect the underlying steel from further corrosion. When used appropriately, Corten steel planters can provide decades of service.
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While we don’t recommend corten steel to be used in coastal environments, the exposure to salt-laden air can affect the development and performance of the protective patina.
If you are planning a coastal installation, please contact us for advice on the most suitable option, we also have a blog post that answers many questions on using corten steel in costal sites.
Frequently Asked Questions
Customer Reviews
“I recently messaged Rust and Roast on their Facebook page about ordering, Michael responded very quickly and was super helpful. I placed my order and it took a few weeks to arrive, The planters were a little bit fiddly to put together with no instructions But it was pretty self-explanatory to be honest. The planters seem sturdy. I ordered two 2 meter planters, They’ve been in around two weeks now And are already starting to rust. Our garden project isn’t finished yet, nowhere near. But these were our starting point. Highly recommend this company, Customer service is outstanding, even checked once the order had arrived if everything was okay.”
“Purchased a Corten steel water table and edging. Absolutely beautiful addition to the garden. Really good quality - incredibly well fabricated. Highly recommend!”
Can Corten steel be used in coastal UK gardens? Learn how salt air affects weathering steel, how the protective patina forms, and how to protect Corten steel near the sea.