Straightcurve Weathering Steel Planters

Easy-build planter boxes for stylish landscaping solutions

Shop the range

Precision engineered planter boxes that are designed to last

With little to no fuss, simply fix panels together and place in your garden for a professionally finished look.

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Meet the Straightcurve Planter Box

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Order your planters

Choose from our range of easy-build kits
or order panels & accessories for custom designs.

Rectangular Planter Box

Rectangular Planter Box

1000L x 400W x 400H

Supplied as easy-build kit with 4 precision engineered weathering steel panels and fittings to build one complete planter box.

Out of stock

Square Planter Box (Small)

Square Planter Box (Small)

400L x 400W x 400H

This easy-build kit includes 4 precision-engineered weathering steel panels and fittings to build a small, high-quality planter box.

Only 8 left in stock

£250.08
- +
Square Planter Box (Medium)

Square Planter Box (Medium)

600L x 600W x 400H

This easy-build kit includes 4 precision-engineered weathering steel panels and fittings to build a medium-sized, high-quality planter box.

Only 8 left in stock

£279.98
- +
Square Planter Box (Large)

Square Planter Box (Large)

800L x 800W x 400H

This easy-build kit includes 4 precision-engineered weathering steel panels and fittings to build a large-sized, high-quality planter box.

Only 4 left in stock

£309.88
- +
Custom Planter Box

Custom Planter Box

To make a custom planter box (or raised garden bed), choose the panels & accessories required for the size & shape of your design. Helpful hint - scroll down to read our quick guide to custom planters before your build your first custom order.

Our planters are made for you...

If you love high-end aesthetics...

One reason to love our planter boxes is that they look very stylish – we’ve intentionally designed them to enhance the look & feel of the gardens they feature in. Our planters look so good because they’re:

  • Made from real weathering steel for a rustic natural look that develops with a rusted patina.
  • Internally joined with concealed fittings to produce clean lines and beautiful seam details.
  • Precision-engineered to achieve a stylish, high-end aesthetic with every installation.
  • Designed with a 45mm top edge to form a stylish, boxy profile.

If you value high-quality...

Simply put, you won’t find a better quality steel planter, because Straightcurve planter boxes are:

  • Very high-quality landscaping products made to exacting standards.
  • Designed & manufactured to an exceptionally high standard for a flawless fit & finish.
  • Made from 2mm thick high-quality engineered weathering steel panels.

If you're looking for a very durable product...

Our planter boxes are ideal for DIY gardeners and professional landscapers who value durability because they’re:

  • Made with weathering steel; a hard-wearing material that can last for 10 years or more.
  • Rock-solid and won’t budge once installed thanks to our unique joining + bracing systems.
  • Quality tested to ensure landscape industry-leading durability.

If you're a bit of a perfectionist...

If you have an eye for detail and want things to be just so (and stay that way) our planters are ideal for you because they’re:

  • Designed to fit neatly together via a hidden joining system that produces a beautiful seam detail at the joins.
  • Engineered to stay strong & true for many years after installation – the thickness of the steel and the way the system is designed to hold together means our planters won’t budge, bulge, crack or otherwise change shape once installed.

If ease of installation and usability are important to you ...

Our planters tick all the usability boxes because they’re:

  • Expertly designed for quick & easy DIY installation.
  • Made with smooth rolled edges to keep children & pets and other garden users safe.
  • Supplied with an integrated stabilising foot for installation on level ground (which means there’s no need to bury any part of the edge, so you’re not paying for material you’ll never see).
  • Maintenance-free once installed and weathered.

If you want to increase curb appeal and liveability...

Our planters are easy to build. They require no maintenance once installed. And they improve the look & feel of the homes, gardens, and commercial properties in which they feature. For these reasons, our planters are a great low-cost, low-maintenance option for:

  • Increasing the curb appeal and liveability of homes & investment properties.
  • Making commercial buildings more attractive to tenants and their customers.
  • Introducing plants & trees to office spaces and other working environments.

Don’t just take our word for it

The weathering steel finish

Ellipse 1

How it comes

The manufacturing process of weathering steel will leave the surface in a dark, almost black state. The weathering process sees this layer break down first before the desired protective patina layer can establish.

About-Image
Ellipse 2

What it turns into

Once installed, wash with warm soap and water to remove the protective coating and encourage development of an even patina - this may take weeks or months depending on weather conditions.

Straightcurve weathering steel planters vs other materials

Straightcurve Weathering steel Mild Steel Aluminium Plastic Timber
Ideal for outdoor use
Natural rustic aesthetic
Long lasting
Low maintenance
Super high strength
Forms protective patina

Choose your planter

Expertly designed for quick & easy DIY installation

Rectangular Planter Box

Rectangular Planter Box

1000L x 400W x 400H

Supplied as easy-build kit with 4 precision engineered weathering steel panels and fittings to build one complete planter box.

Out of stock

Square Planter Box (Small)

Square Planter Box (Small)

400L x 400W x 400H

This easy-build kit includes 4 precision-engineered weathering steel panels and fittings to build a small, high-quality planter box.

Only 8 left in stock

£250.08
- +
Square Planter Box (Medium)

Square Planter Box (Medium)

600L x 600W x 400H

This easy-build kit includes 4 precision-engineered weathering steel panels and fittings to build a medium-sized, high-quality planter box.

Only 8 left in stock

£279.98
- +
Square Planter Box (Large)

Square Planter Box (Large)

800L x 800W x 400H

This easy-build kit includes 4 precision-engineered weathering steel panels and fittings to build a large-sized, high-quality planter box.

Only 4 left in stock

£309.88
- +
Custom Planter Box

Custom Planter Box

To make a custom planter box (or raised garden bed), choose the panels & accessories required for the size & shape of your design. Helpful hint - scroll down to read our quick guide to custom planters before your build your first custom order.

Step by Step Guide to Custom Planters

How to order a Custom Planter

How to Order & Build a Straightcurve Custom Planter Box

Our square and rectangle planter box kits arrive with all the parts you need to build a preset size & shape, but if you have something else in mind, you can order a high-quality custom planter box to almost any size & shape by choosing from our range of planter box panels, joining sets and bracing accessories. This quick guide explains how to sketch out, measure up, order, and build a custom planter box with our products.

Download Guide

How to order your custom planter:

Step 1 - Sketch out...

Sketch out your planter box shape including dimensions of all sides.

Step 2 - Measure up...

On your sketch, mark out all panel sizes required to build your design.

Note: Straightcurve planter panels are available in 400mm, 600mm, 800mm, and 1000mm long lengths to make up a ‘nearest to’ option.

Step 3 - Jot down...

Jot down the number of panels of each length needed for your design.

Then do the same for joiner accessories by circling all the panel joining points and counting the number of straight joins, closed corners, and reverse corners needed to join your panels / build your planter.

Step 4 - Brace it...

Each straight join in your design will require bracing.

Use one bracing strap set where two opposing joins are equal to or less than 1200mm apart. In all other situations, use one universal bracing set (or ground anchor post 1100mm + fitting set) per straight join.

Make a note of how many of each type of bracing set you need on your sketch.

Step 5 - Add screws...

Don’t forget your screws.

All Straightcurve planter joins are fixed with Tek Screws which you can add to your order before checking out.

Our webshop automatically calculates and recommends the number of screws you’ll need based on the products you’ve added to your cart. Make sure to add the required number of Tek Screws to your order (or you can supply them yourself).

Step 6 - Place order...

Now you’re ready to shop.

Go to the “Custom Planter Box” option on this page and click “Shop options”.

Use the notes on your sketch as a shopping list and build your order by adding the required:

> Panels

> Joining accessories

> Bracing sets

> Screws

Next, review your cart (checking you’ve everything you need) and place your order.

Your custom planter components will be delivered within 7 working days.

Remember – if you have any questions or queries regarding your products you can always reach out to us via email or live chat.

Planter Box Product Catalogue

Planter Box Product Catalogue

Our comprehensive planter box product overview

Everything you might want to know about the Straightcurve planter box range in one downloadable PDF. Includes FAQs, benefits, advantages, technical specifications, installation guidance, and technical drawings.

Download Product Catalogue

Our planters in action

Case-study-2-Urban-Journey

Small spaces, beautiful opportunities

Small doesn’t mean uninspiring! You can look at a small space such as a courtyard, patio, or balcony as an opportunity to get creative and make it all the more inviting.

Download Case Study
Case-Study-1

A Cornish front garden makeover

See how our planter box panels were used to help transform this beautiful courtyard garden.

Download Case Study

Straightcurve Promises

Exceptional quality products designed for flawless fit & finish

precision-engineered

Precision engineered

All our products are designed & engineered for a strong hold and perfect finish.

no-quibble-returns

No quibble returns

If anything goes wrong, we offer a no quibbles money-back guarantee on products.

iso-certified

ISO certified

Our material selection & manufacturing is ISO certified to maximise product quality & lifespan.

Planter-Box-1000x400

Now shipping from our UK warehouse

Buy today and receive within a week!