Langes flaches Cortenstahl Hochbeet auf moderner Terrasse mit Rosmarin, Lavendel und Salbei bepflanzt
Quadratisches Cortenstahl Hochbeet mit ausgebildeter Edelrost-Patina, bepflanzt mit Erdbeeren und jungem Obstbaum im sonnigen Garten
Mehrere Cortenstahl Hochbeete nach Maß im Gemeinschaftsgarten mit Gewächshaus – Urban Gardening mit Gemüse und Kräutern
L-förmiges Cortenstahl Hochbeet als Sonderanfertigung mit Zucchini, Salat und Kohlrabi auf Kiesfläche
Cortenstahl Hochbeet nach Maß im Garten auf Kiesfläche, bepflanzt mit Salat, Tomaten und Kräutern
Hochbeet aus Cortenstahl rechteckig und verschweißt mit innenliegender Querstrebe und offenem Boden
Cortenstahl Hochbeet rechteckig freigestellt mit 2 mm Materialstärke und Edelrost-Patina
Detail der doppelt umgekanteten Oberkante 35 x 20 mm am Cortenstahl Hochbeet
Innenansicht des Cortenstahl Hochbeets mit horizontalem Versteifungsprofil gegen Ausbeulen
Hochbeet aus Cortenstahl auf der Terrasse mit Stauden bepflanzt, Made in Germany
Cortenstahl Hochbeet im Garten mit Blühpflanzen und 1.600 Liter Pflanzvolumen
Kundenfoto: bepflanztes Cortenstahl Hochbeet nach Maß im Bauerngarten – mit Bohnen, Zwiebeln, Kräutern und Blumenkorb an der Oberkante
Kundenfoto: großes Cortenstahl Hochbeet nach Maß im Garten, frisch mit Erde befüllt, beginnende Edelrost-Patina an den Kanten
Hochbeet aus Cortenstahl im Lieferzustand: fertig verschweißt, mit Spanngurten auf stabiler Holzpalette fixiert
Versandfertig verpacktes Cortenstahl Hochbeet: Kartonage, Stretchfolie und Warnband auf Holzpalette für den Speditionsversand

Custom Corten Steel Raised Bed – Welded Corten Steel Raised Bed, Made in Germany

SKU: HB-COR-40-40-40

Custom-made: length 40–240 cm, width 40–120 cm, height 40–110 cm in 10-cm increments

Delivered fully welded – no assembly kit, no tools, ready for immediate use

Sheet thickness 2–5 mm dimensioned to match the length – at no extra charge

Genuine Corten steel with protective rust patina – Made in Germany

Length in cm:

Length in cm
Width in cm:

Width in cm
Height in cm:

Height in cm
Quantity:
622,55 €inkl. MwSt.
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Lieferzeit: 2-3 weeks
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Made-to-Measure Corten Steel Raised Bed – Welded All Around and Ready to Set Up

This rectangular raised bed is made of genuine Corten steel and is manufactured to your chosen dimensions – as a single component welded at all four corners. There are no bolted edges, no visible joints and nothing to assemble: unpack, position, fill. Over time the surface develops its warm rust patina and becomes a calm, natural focal point among perennials, vegetables and herbs.

Guide tip: You will find everything about planning, choosing dimensions, layered filling, planting and patina care in our comprehensive Corten steel raised bed guide.

Your dimensions, in 10 cm increments

You can combine length, width and height freely – each in 10 cm increments:

  • Length: 40 to 240 cm
  • Width: 40 to 120 cm
  • Height: 40 to 110 cm

That adds up to over 1,200 size combinations with a planting volume of roughly 64 to 3,168 liters – from a narrow bed for the balcony to a large growing bed. Please note: the width cannot be greater than the length. If you need an intermediate size or a different shape, we can produce it as a custom item – just get in touch.

Sheet thickness: we size it for you

You do not have to select the material thickness yourself. We derive it from the length of your bed, because the soil pressure on the side walls increases with the length:

  • 40 to 70 cm length: 2 mm
  • 80 to 140 cm length: 3 mm
  • 150 to 190 cm length: 4 mm
  • 200 to 240 cm length: 5 mm

The price for each size combination already includes the appropriate sheet thickness – there is no surcharge.

Construction

As standard, the top edge is double-folded and turned inward. Its dimensions scale with the sheet thickness so that the folded edge matches the material cross-section: 2 mm sheet gets 30 × 20 mm, 3 mm sheet 40 × 25 mm, 4 mm sheet 45 × 35 mm and 5 mm sheet 60 × 40 mm (width × height). This takes the sharpness out of the edge, gives the body rigidity and creates a comfortable resting surface while you work. At the bottom, a single 30 mm fold ensures a stable stance and edge protection. Inside, a horizontal stiffening profile prevents the side walls from bulging outward under soil and root pressure.

All raised beds are manufactured without a base as standard and therefore sit in open contact with the ground. This is ideal for lawns and garden soil: rainwater drains away and soil organisms and earthworms migrate in from below. The bed can also be placed on solid surfaces such as a terrace or balcony, provided excess water can drain off.

Tip if slugs are an issue: If slugs are a problem where you are, this raised bed is also available with a top edge folded outward – the overhanging rim acts as a mechanical barrier. Here is the raised bed with slug-guard edge.

Your benefits

  • No assembly needed: Delivered as a fully welded complete unit – no kit, no tools, no visible screws.
  • Made to measure instead of a standard size: over 1,200 combinations of length, width and height in 10 cm increments.
  • Sheet thickness included: 2 to 5 mm, automatically sized to match the length – at no extra charge.
  • Keeps its shape even when fully filled: double top edge, folded bottom edge and internal stiffening profile work against the soil pressure.
  • Maintenance-free for decades: Corten steel needs no paint and no coating and is 100% recyclable.

Technical data

  • Material: Corten steel, weathering structural steel (material no. 1.8965 / 1.8946)
  • Material thickness: 2 to 5 mm, depending on the length (see scale above)
  • Length: 40 to 240 cm in 10 cm increments
  • Width: 40 to 120 cm in 10 cm increments, no larger than the length
  • Height: 40 to 110 cm in 10 cm increments
  • Planting volume: approx. 64 to 3,168 liters depending on the size
  • Design: rectangular, complete unit welded all around
  • Base: standard without a base, open ground contact
  • Top folded edge: standard folded inward
  • Dimensions of the top edge: double-folded, width × height depending on sheet thickness – 2 mm: 30 × 20 mm, 3 mm: 40 × 25 mm, 4 mm: 45 × 35 mm, 5 mm: 60 × 40 mm
  • Bottom edge: single fold, 30 mm
  • Stiffening: horizontal stiffening profile inside
  • Dimension details: external dimensions length × width × height
  • Condition on delivery: steel gray or partly rusted; the patina develops fully within about 1.5 to 3 years
  • Delivery: as a single piece, no assembly required, shipped by freight forwarder
  • Origin: Made in Germany

Develop the patina faster – with a rust activator

Naturally, it takes about 1.5 to 3 years for the rust patina to develop fully. If you want the warm rust look sooner, you can help things along with a rust accelerator such as the RustIT+ rust activator – the patina then forms in a matter of days instead of years. Here is how easy it is:

  • 1. Prepare: The surface must be dry and free of grease and dust. Remove fingerprints with a little methylated spirit and cover sensitive surfaces around the bed.
  • 2. Apply: Spray the rust activator evenly onto all visible surfaces – wearing gloves and safety goggles.
  • 3. Let it work: The first rust forms within just a few hours. For an even, rich patina, repeat the application after 24 hours – subsequent exposure to rain and sun deepens the color further.

Genuine Corten steel – not „structural steel with a rust look“

  • Weather-resistant alloy with copper and chromium – not untreated structural steel St37 or S235.
  • A firmly adhering protective patina forms instead of porous, flaking rust.
  • No rusting through: decades of service life, virtually maintenance-free.

We explain in detail why this is a technical difference and not just a visual one in our guide Corten steel vs. structural steel St37.

And if you would like to go deeper: our comprehensive raised bed guide takes you from planning through filling to planting.

Questions and Answers

No. The raised bed is delivered as a single unit, factory-welded at all four corners. There are no screws, no individual parts, and no assembly materials. You unpack it, position it at the desired location, and fill it. Shipping is by freight carrier. Plan for a second person when setting it up – depending on the dimensions and sheet thickness, a bed can be quite heavy; large versions in 5 mm weigh considerably more than compact ones in 2 mm.

You configure the length (40–240 cm), width (40–120 cm), and height (40–110 cm) freely in 10 cm increments. As a rule of thumb: a width of 60 to 100 cm, so you can comfortably reach the middle of the bed from both sides. With a working height of 80 to 90 cm, you can garden standing up without bending; 40 to 60 cm works well on patios and balconies or as a low bed border. Plan for access from at least two sides. Note that the width cannot be greater than the length, and all figures are external dimensions in the order length × width × height.

Without a bottom, the bed is in open contact with the ground below. On lawns and garden soil, this is ideal: rainwater drains away and soil organisms migrate in from below. It also works on solid surfaces such as patios or balconies, as long as excess water can drain off. In that case, first add a drainage layer of coarse gravel or expanded clay about 10 cm deep, then a fleece as a separating layer, and only then the soil. This prevents waterlogging.

It is not necessary – the bed also works without a lining. However, a layer of dimpled membrane or polystyrene offers two advantages: it insulates the soil in winter and buffers heat from outside in summer. It also prevents direct contact between the metal and permanently moist soil, which further extends the service life.

The raised bed is delivered steel-gray or already partially rusted. The patina develops solely through weathering and is fully formed after about 1.5 to 3 years. In the early period, rust-tinted water may drip off and leave stains. It is therefore best to place the bed on a non-sensitive surface such as gravel, lawn, or stone slabs. On light-colored, sensitive surfaces, a mat or foil placed underneath helps at first.

Yes. On its own, the noble-rust patina forms within about 1.5 to 3 years – with a rust accelerator such as the RustIT+ rust activator it takes just a few days. Here is how it works: the surface must be dry and free of grease and dust (wipe off fingerprints with a little denatured alcohol, cover sensitive floors). Then spray the activator evenly onto all visible surfaces – wearing gloves and safety glasses. The first rust formation appears after a few hours; for an even, rich patina, repeat the application after 24 hours. Rain and sun then deepen the color on their own, and the protective effect of the patina is fully retained.

Yes. Corten steel is non-toxic and suitable for growing vegetables and herbs. The patina consists of natural rust compounds and does not release any harmful substances. The material is also 100 percent recyclable and requires no paint or coating.

You do not have to choose the sheet thickness yourself – we derive it from the length, because soil pressure on the side walls increases with it: lengths of 40 to 70 cm are made in 2 mm, 80 to 140 cm in 3 mm, 150 to 190 cm in 4 mm, and 200 to 240 cm in 5 mm. The respective price already includes the appropriate thickness; there is no surcharge. In addition, the closed body, welded all around, distributes the soil pressure across one continuous system, making it considerably more dimensionally stable than a bolted kit. A horizontal stiffening profile supports the side walls from the inside, and the double-folded top edge reinforces the upper rim.

The top edge is always double-folded, but its dimensions depend on the sheet thickness – and that in turn depends on the length of your bed. With 2 mm sheet (length 40–70 cm) the fold measures 30 × 20 mm, with 3 mm (80–140 cm) 40 × 25 mm, with 4 mm (150–190 cm) 45 × 35 mm and with 5 mm (200–240 cm) 60 × 40 mm, in each case width × height. The reason is structural: a larger folded profile has a higher section modulus and gives better support to the longer, more heavily loaded side wall. You do not have to select anything – the matching fold is already included in the price of each size combination.

That depends on the dimensions and sheet thickness: the range extends from around 13 kg for the smallest bed (40 × 40 × 40 cm, 2 mm) to about 336 kg for the largest (240 × 120 × 110 cm, 5 mm). Typical examples: a bed measuring 100 × 60 × 80 cm in 3 mm weighs around 67 kg, one measuring 200 × 100 × 80 cm in 5 mm around 209 kg. Delivery is by freight carrier on a pallet. For setting up large beds, it is best to plan for two to four people – the bed is always carried empty and only filled at its final location.

The classic layered structure from coarse to fine has proven itself: at the bottom, a layer of coarse tree and shrub cuttings as drainage (approx. 20–30 cm), then upside-down turf, leaves, and green cuttings, followed by mature compost, and on top 15–20 cm of high-quality potting soil. The lower layers decompose over the years, generating nutrients and some warmth as they slowly settle – simply top up with compost and soil each year. For low beds on patios or balconies, a drainage layer of expanded clay or gravel with a fleece on top plus potting soil is sufficient.

Each raised bed is individually manufactured to your desired dimensions after ordering – production in Germany usually takes 2 to 3 weeks. The fully welded bed is then securely packaged on a pallet and delivered to you by freight carrier. Since there is no assembly, the bed is ready for use immediately upon delivery: set it up, align it, fill it.