ADEZZ Corten Steel CARREZ Low Square Planter (14 sizes): L140cm x W140cm x H60cm: + 5Ltr Owatrol @£215.00

CA3-2

• Architectural low square planter manufactured from high-quality corten steel
• Designed for modern gardens, roof terraces, and commercial landscaping projects
• Develops a natural weathered patina for long-term durability and low maintenance
• Strong square form with crisp corners and a double-turned top edge
• Available in a wide size range from L80cmxD80cmxH40cm up to L200cmxD200cmxH80cm
• Suitable for shrubs, ornamental grasses, mixed planting, and specimen plants
• Generous internal volume supports healthy root development
• Ideal for residential, hospitality, and public realm outdoor spaces
• Built for reliable year-round outdoor use in the UK climate
• Supplied in the UK by Riverhill Garden Supplies with nationwide delivery and secure project storage available

The ADEZZ Corten Steel Low Square Planter delivers a bold, architectural planting solution defined by clean lines, crisp square corners, and a distinctive double-turned top edge. ADEZZ manufactures each planter from high-quality corten steel to ensure long-term outdoor performance. As steel weathers, it forms a rich, natural patina that adds warmth and character while remaining exceptionally durable and low-maintenance in the UK climate.

The low square format spans a wide size range, allowing designers to specify planting with precision across different scales. Sizes range from L80cmxD80cmxH40cm for compact schemes through to L200cmxD200cmxH80cm for extensive architectural planting. A choice of square and rectangular footprints, combined with heights of 40cm, 60cm, and 80cm, supports everything from ornamental grasses and shrubs to more substantial planting. At the same time, the generous internal volume promotes healthy root development.

This planter works particularly well in modern residential gardens, roof terraces, courtyards, hospitality environments, and commercial or public realm projects where structure and material quality matter. Its low, vast proportions help define space clearly without overpowering the surrounding design, making it ideal for zoning, edging, and creating strong planting blocks. Riverhill Garden Supplies supplies the ADEZZ Corten Steel Low Square Planter across the UK, offering nationwide delivery and secure project storage to support phased installations and build schedules.

Order online or by telephone. Our office is open Mon-Sat 8 am-10 pm including Bank Holidays except Christmas Day.

Click here to download the ADEZZ Corten Steel CARREZ Planters Information Sheet

ADEZZ manufactures its Corten Steel planters from a specialist steel alloy that naturally protects itself from corrosion. When you place the planter outdoors, oxygen and moisture react with the steel to form a stable protective rust layer. This layer seals the surface and prevents deeper corrosion, keeping the planter strong and structurally sound for many years.

ADEZZ supplies all Corten Steel planters rust-free. Once you expose the planter to the elements, the weathering process begins and usually takes 4 to 5 months, depending on rainfall, temperature, and exposure. During this time, the colour changes from dark grey to warm orange-brown, then settles into the rich natural patina that designers and landscapers value.

As the steel weathers, rust runoff can temporarily stain paving or stone. You can prevent marking by placing the planter on gravel, soil or another permeable surface until the patina stabilises.

ADEZZ fits every Corten Steel planter with hidden feet and drainage holes. These raise the planter slightly above the ground, allowing air to circulate underneath and water to drain away freely. This design protects the base and supports healthy root growth.

Install the planter on a flat, solid surface and leave at least 1cm of space around the base so moisture cannot become trapped. Do not fit an overflow pipe, as standing water inside the planter can accelerate corrosion.

When you plant, add a 10cm layer of gravel to the base, cover it with a permeable membrane, then add your compost or growing medium. This setup ensures excellent drainage and prevents excess moisture from reaching the steel.

Avoid using hydro pellets, as they retain water and reduce drainage efficiency. For best results, avoid placing Corten Steel planters in areas with heavy salt exposure, such as near the coast.

Once the planter has developed its final patina, you can leave it to weather naturally, or apply a rust stabiliser (Owatrol) to lock in the colour and prevent loose rust from transferring.

With proper installation and drainage, ADEZZ Corten Steel planters deliver a robust, low-maintenance, weatherproof planting solution that performs beautifully year after year.

Order online or by telephone. Our office is open Mon-Sat 8 am-10 pm including Bank Holidays except Christmas Day.

Stock and Lead Times

Our website displays all ADEZZ Corten Steel CARREZ, CIRCUM, CONIC, TAP, ELLIPSE, L-SHAPED, BOCCA, and ONYX planters as in stock. We do hold a limited selection of these planters at our warehouse near Tonbridge, Kent; however, the majority of orders are supplied directly from ADEZZ, who maintain high stock levels across this range.

As a general guide, the average lead time is approximately 10–12 days from order. This timeframe is indicative only and can vary depending on size, quantity, and current stock availability.

If lead time is critical to your project, or if you would like confirmation before placing an order, we strongly recommend contacting us first. A member of our team will be happy to check live stock levels with ADEZZ and provide a more accurate indication of delivery times before you proceed.

Storage and Delivery Flexibility

We understand that customers often work to project schedules and may need flexibility. One advantage of ordering from Riverhill Garden Supplies is that we can hold stock at our warehouse near Tonbridge, Kent, until you are ready to take delivery. We can order well in advance of your project and store the planters at no additional cost, giving you complete control over when your items arrive while allowing us to manage delivery from within the UK.

Customers are also welcome to collect their orders directly from our storage facility near Tonbridge, where we can load vehicles at short notice using one of our forklift trucks.

Riverhill Garden Supplies has been an ADEZZ reseller in the UK since 2011, and is proud to be one of the leading retail suppliers of ADEZZ garden planters nationwide. Our focus is on premium-quality garden products at the best possible prices for both the retail and garden professional, with exceptional customer service to match.

We regularly monitor market prices to ensure our customers receive outstanding value. However, if you find any products available online at a lower price, please let us know — we will match the final basket price for like-for-like items.

Order online or by telephone. Our office is open Mon-Sat 8 am-10 pm including Bank Holidays except Christmas Day.

Riverhill Garden Supplies — ADEZZ Specialist (UK)

In 2011, Riverhill Garden Supplies became the first business in the UK to retail ADEZZ products through the then sole importer, The Pot Company. Since 2019, we have worked directly with ADEZZ to supply their full range to customers across the UK.

More than just an online retailer
We operate as more than just an online retailer. From our Kent warehouse we handle extra-large orders, bespoke fabrications and phased or delayed deliveries. We regularly store planters for customers until sites are ready and then arrange tailored deliveries to suit contractors, designers and private clients. We keep our approach simple by combining flexibility, practical problem-solving and clear communication.

Ordering direct from ADEZZ (Uden, Holland)
As a dedicated ADEZZ partner, Riverhill Garden Supplies combines deep product knowledge, accurate lead time advice and dependable customer service. We place orders directly with ADEZZ’s central warehouse in Uden, Holland, often daily during the high season, which allows us to secure stock immediately or instruct fabrication to begin without delay when ADEZZ needs to make a product to order.

Why we choose ADEZZ
We choose to list ADEZZ products because their European craftsmanship, precision fabrication and durable finishes meet the standards we demand for our customers. ADEZZ designs Aluminium and Corten Steel planters that combine clean contemporary design with professional-grade construction, making them suitable for everything from private gardens to large commercial landscapes.

Why ADEZZ Corten Steel stands apart
Corten Steel planters are one of the most poorly replicated products in the planter industry, with many cheaper alternatives failing to match proper steel grade, welding quality and long-term performance. ADEZZ uses high-grade 3mm Corten Steel (S355JOWP) and applies precision welding, accurate forming and strict quality control. This approach ensures every planter weathers evenly, forms a proper protective patina and remains structurally sound for decades. You can see the difference in the finish, strength and consistency of every ADEZZ Corten Steel planter.

How ADEZZ compares to UK-made alternatives
We regularly speak with UK manufacturers who offer Aluminium, Corten Steel, Fibreglass, Hardwood and coated steel planters that attempt to copy ADEZZ designs. None of them match the welding quality, surface finish or long-term durability that ADEZZ consistently delivers.

ADEZZ also holds an extensive range of stock at its warehouse in Uden, Holland, which allows us to offer fast, reliable order fulfilment across hundreds of sizes, colours and designs — something UK manufacturers simply cannot replicate. Over the years, we have imported planters from further afield. While this sometimes reduced costs, it also confirmed what we already knew: quality suffered. Inferior coatings, thinner steel and inconsistent fabrication produced planters that failed to meet our standards, especially in Corten Steel and Aluminium.

ADEZZ remains our benchmark
These experiences continue to reinforce our view that ADEZZ sets the benchmark for European-made planters. Their craftsmanship, consistency and reliability stand apart across Aluminium, Corten Steel, Hardwood, Fibreglass and coated steel ranges.

Experienced UK ADEZZ reseller
Whether you need modern Aluminium planters, premium Corten Steel designs or bespoke ADEZZ fabrications, Riverhill Garden Supplies provides one of the UK’s most experienced and reliable ADEZZ services, delivering clear advice, accurate lead times and dependable delivery from order to installation.

Order online or by telephone. Our office is open Mon-Sat 8 am-10 pm including Bank Holidays except Christmas Day.

Telephone Sevenoaks (01732) 522471

The strong, geometric form of the ADEZZ Corten Steel Low Square Planter makes it ideal for planting schemes that emphasise structure, clarity, and permanence. Its crisp, architectural profile suits contemporary gardens, courtyards, entrances, roof terraces, and commercial landscapes, where planting needs to sit confidently alongside modern architecture rather than soften it excessively.

For architectural schemes, specimen trees work particularly well, especially in the larger sizes where the footprint and soil volume allow roots to establish properly. Multi-stem trees such as Amelanchier, Betula, or Cornus add height and seasonal interest while maintaining a light, open canopy. In more Mediterranean or urban settings, olive trees or Arbutus unedo create a strong visual contrast, with characterful trunks and evergreen structure complementing the warm corten steel finish.

Structured evergreen planting also suits this planter style exceptionally well. Plants such as Ilex, yew, or clipped alternatives to box create strong, formal shapes that echo the planter’s clean geometry. When used in pairs or repeated at regular intervals, they help frame entrances, guide movement, and introduce rhythm and order within a space.

For softer planting schemes, ornamental grasses and architectural perennials introduce movement and texture without undermining the planter’s bold form. Grasses such as Miscanthus, Calamagrostis, or Pennisetum contrast effectively with the solid steel structure, while underplanting with Salvia, Nepeta, or Echinacea adds seasonal colour and extended interest.

In the larger low square sizes, the planter also works well for mixed planting. A central tree or specimen shrub can be combined with lower planting around the base to create layered, immersive compositions. The generous internal volume supports healthy long-term growth, even in exposed or hard-landscaped environments where reliable rooting space is essential.

Thanks to its durability and low-maintenance performance, the ADEZZ Corten Steel Low Square Planter suits high-end residential gardens, hospitality settings, and public realm projects where planting needs to deliver lasting visual impact with minimal ongoing intervention.

— Jeremy

Owner, Riverhill Garden Supplies

Bespoke sizes are available for this product. Please contact Riverhill Garden Supplies to discuss. Please have the desired measurements to hand so that a member of our customer service team can calculate a fabrication cost for you.

Contact Riverhill Garden Supplies by telephone to discuss Bespoke Sizes for this product. Our office is open Mon-Sat 8 am-8 pm including Bank Holidays to take your call.

ADEZZ Corten Steel CARREZ Low Square Planter (14 sizes).

We will deliver your order using the fastest, safest, and most reliable method possible. Our delivery methods are listed on the product page as well as throughout the checkout process.

Riverhill Garden Supplies will select the appropriate dispatch method when you order based on your location and the product(s) that you have ordered.

Dispatch Methods

Parcel Delivery

Smaller products are delivered by parcel couriers, such as TNT and Parcelforce. Upon dispatch, we will notify you via email with the estimated day of delivery and forward you a tracking number.

Pallet Delivery

Larger products will be delivered by our own dedicated delivery drivers or by specialist carriers such as Palletways and ILS who will be given your contact details and instructed to book in delivery with you once your order reaches your local delivery depot.

Special Instructions

If you have any special instructions regarding delivery, please email mail@riverhillgardensupplies.com or telephone the office on T 01732 522471.

The office is open 7 days a week, from 8am to 10pm including Bank Holidays except Christmas Day.

Shipping Costs

We charge a flat rate of £20.00 for delivery to England, Wales and Central Scotland. We charge a flat rate of £50.00 for delivery to England, Wales and Central Scotland if your order includes any ADEZZ, FORNO or FURNS product.

We are not able to offer a flat rate of £20.00 for delivery to East Central Scotland, North and North East Scotland, West Scotland, Norther Ireland, ROI, Skye, Orkney Isles, Outer Hebrides, Shetland Isles, Inner Hebrides, Isle of White, Isle of Man and the Channel Isles and a surcharge will apply. Please see prices below.

East Central Scotland, West Scotland and North and North East Scotland

£70

Postcodes DD, FK8-9,11-21, KY1,6-16,99, PH1-18, TR1-16, AB, IV1-28,30-32,36,55-56,63,99, KW1-3,5-14, TR17-27,93, PA21-38,80, PH19-26,30-41,49-50

Isle of White

£80

Postcodes PO30-4

Northern Ireland, ROI, Isle of Man

£90

Postcodes BT, IE6, IE1-5,7-26, IM

Skye, Orkney Isles, Outer Hebrides, Shetland Isles, Inner Hebrides

£120

IV40-49,51-54, KW15-17, HS, PA20, ZE, KA27, PA42-49,62-75, KA28, PA41,60-61,76-78, PH42-44

Channel Isles

£250

GY1-9, JE

Europe and the Rest of the World

Riverhill Garden Supplies deliver to Europe and the Rest of the World. Please email mail@riverhillgardensupplies.com or telephone the office on T +44 1732 522471 to discuss delivery to Europe and the Rest of the World.

The office is open 7 days a week, from 8am to 10pm including Bank Holidays except Christmas Day.

You can return your order up to 60 days after delivery

Please note that you are responsible for arranging the return of your order and for the costs of returning your order to us unless we have delivered the item to you in error. All return items must have original tags and packaging; and not been used or modified.

Our returns address

Non-returnable Items

We cannot accept returns on any made-to-order products. This includes all products by ADEZZ and all products in the Fibreglass Collection.

Do you need help arranging a return?

If you are having difficulties arranging a return, please telephone the office on t 01732 522471 to speak to a member of staff who will assist you.

The office is open 7 days a week, from 8am to 10pm including Bank Holidays except Christmas Day.

What if My Order Arrives Damaged?

Our goal is to make buying online with Riverhill Garden Supplies easy, safe and efficient. Although extremely rare items can arrive damaged and we are conscious of this so it is very important for that you read the following.

Upon delivery, please carry out the following steps

• Remove the goods completely from their packaging
• Closely inspect the goods for damages or shortfalls
• Sign for the goods, accordingly, noting damages/shortfalls and refuse the goods
• Notify Riverhill Garden Supplies of any damages/shortfalls within 24 hours by telephoning the office on t 01732 522471. The office is open 7 days a week, from 8am to 10pm including Bank Holidays except Christmas Day. Providing that you have signed for the goods as damaged and refused the goods we will repeat and dispatch your order again or arrange a full refund

The courier is obliged to wait 15 minutes for you to carry out these checks if need be. No claim will be accepted if a clean signature is given. Any claim for damages/shortfall must be made within 24 hours.