Square Rustic Steel Planter - 400mm x 400mm Top x 1000mm Height

Square Rustic Steel Planter - 400mm x 400mm Top x 1000mm Height

£126.00

Square Rustic Steel Planter - 400mm x 400mm Top x 1000mm Height

£126.00
Taxes included. Shipping calculated at checkout.
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Made in the UK

Made in the UK

All of our steel planters are designed and manufactured right here in the UK.

Square Rustic Steel Planter - 400mm x 400mm Top x 1000mm Height
1/5

Details at a Glance

Shape HeightWidth DepthBaseDrainage holes
Square shapeSquare
1000 mm400 mm 400 mmNo-

Pallet Delivery

Due to the size of this item, it will be delivered on a pallet. A pallet delivery charge will therefore be applied at checkout.

Please note that only one pallet delivery charge will be applied per order. If you purchase multiple planters or other pallet-delivered items in the same order, you will still only pay one pallet delivery fee.

This tall square rustic steel planter is designed to create a strong vertical feature in your garden while keeping a compact footprint. With a 400mm x 400mm top and a full 1000mm height, it is ideal for adding height to patios, pathways and landscaped areas without taking up too much space.

The open base design allows you to place the Square Steel Planter directly onto soil, gravel or existing plants. This makes it easy to position around trees or shrubs without disturbing them. The extra height provides deep planting space, making it a great choice for small trees, tall plants or layered displays.

Made from heavy duty 2mm British steel, this planter is built for outdoor use in all weather conditions. It arrives fully welded as one solid piece, so there is nothing to assemble. Over time, the bare steel will naturally rust, forming a rich and weathered patina that blends into your garden.

What can this planter be used for?

This Square Steel Planter is ideal for creating tall features and adding structure to your garden.

Use it for small trees, shrubs or vertical planting displays. It also works well for framing entrances, lining pathways or creating focal points in outdoor spaces.

What is it made from?

The Square Steel Planter is made from strong 2mm mild steel.

It is fully welded to create a solid and durable structure that performs well outdoors all year round.

Why choose this planter?

  • Tall statement design - adds height and impact to your garden.
  • Compact footprint - fits neatly into smaller spaces.
  • Open base - perfect for placing over existing plants and garden areas.
  • Strong steel construction - made from durable 2mm British steel.
  • Fully welded build - no assembly required, ready to place.
  • Made in the UK - designed and manufactured using British steel.

Dimensions

  • Top size - 400mm x 400mm (1.31 ft x 1.31 ft / 15.7 x 15.7 inches)
  • Height - 1000mm (3.28 ft / 39.4 inches)
  • Material thickness - 2mm steel
  • Design - Square open-base steel planter

The Rusting Process

Many of our products are made from what we call Rustic Steel. This is plain mild steel with no paint or coating. It is made to change when left outside. Over time, the steel reacts with air and rain. This creates a warm orange-brown finish, often called a patina. It gives the product a natural, aged look.

When your item arrives, it will look grey. It may also have small marks of light rust. This is normal. It is not a fault. It simply shows that the steel is beginning its natural ageing process. As the product stays outdoors, the rust layer will slowly grow and darken in colour.

How fast this happens depends on the weather. Rain, damp air and cold days will speed it up. Dry weather or a sheltered spot will slow it down. Each item will age in its own way. No two pieces will ever look exactly the same, which adds to their charm.

Want it to rust faster?

In normal outdoor conditions, full rusting can take a few weeks or even a few months. If you would like to speed up the process, there is a simple method you can try.

Mix equal parts distilled vinegar and hydrogen peroxide in a spray bottle. Add a quarter of a cup of table salt. Shake well. Spray the mixture evenly over the surface. This will start a fast reaction and you should see rust forming within a couple of days. Always wear gloves and eye protection when handling the mixture, and use it in a well-ventilated area.

Rustic steel product when delivered in bare steel finish
Rustic steel product after weathering with an orangey-brown patina
Delivered Weathered patina

Drag the slider to see how the steel changes over time.

Metric to Imperial Conversion

If you are more used to working in inches and feet rather than millimetres, this quick guide can help. Below you will find a handy reference for some of our standard planter sizes, along with a simple converter to calculate more specific measurements whenever you need them.

Quick reference (mm to inches)

Millimetres (mm) Inches (") Feet + Inches
120 4.72" 0ft 4.72in
200 7.87" 0ft 7.87in
300 11.81" 0ft 11.81in
400 15.75" 1ft 3.75in
600 23.62" 1ft 11.62in
900 35.43" 2ft 11.43in

Tip: 25.4mm = 1 inch.

Conversion calculator

mm
Millimetres -
Inches -
Feet + Inches -

Our Frequently Asked Questions

No, our planters are not made from Corten steel. Corten is actually a specific brand name for a type of weathering steel. Over time the name has become widely used to describe any steel that develops a natural rust finish outdoors, much like how many people use the word “Hoover” to describe a vacuum cleaner.

Our planters are made from high-quality British steel that naturally weathers when exposed to the elements. As the steel sits outdoors, it slowly develops a rich rusted surface that protects the metal and creates the rustic appearance many people look for in garden planters.

This means you still get the same attractive weathered finish and long-lasting durability. The steel gradually forms a warm, natural rust patina that blends beautifully with plants, stone and timber in the garden.

Smaller planters are sent by courier. Larger planters or bulk orders may be delivered on a pallet to keep them safe during transport. Any products that require pallet delivery will be clearly marked on the product page.

No. You will only pay one shipping fee for your order, even if you purchase multiple planters. This makes it easier and more cost effective to buy several planters at once.

Yes, they can be placed on patios, decking or paving. During the early weathering stage, some rust runoff may occur. If you are placing the planter on light coloured surfaces, you may wish to raise it slightly or place it on gravel to reduce the chance of marking.

No special maintenance is required. The steel is designed to weather naturally outdoors. The rusted surface will continue to develop over time and does not need to be treated or painted.

Yes. Weathering steel planters are widely used in gardens and landscaping. Once the surface rust layer forms, the planter provides a stable and long-lasting container for a wide range of plants.

Yes. Steel planters are strong and designed for long-term outdoor use. As the rust layer develops it forms a stable surface that protects the steel underneath. This allows the planter to remain durable while maintaining its natural rustic appearance.