Sienna Square Galvanised Steel Planter

Seventeenth-century inspired square planter delivering bold lines and timeless classical garden sophistication beautifully.

£945.00

Custom sizes available Oct-March

Complimentary delivery

Delivered within 14 days, subject to stock availability

In stock

Available in three sizes
Galvanised heavy gauge steel construction
34-45kg

Small
L 500mm x W 500mm x H 500mm
Medium
L 600mm x W 600mm x H 600mm
Large
L 700mm x W 700mm x H 700mm
Trough
L 1000mm x W 400mm x H 500mm

Poland

Free national kerbside delivery within the UK mainland. Additional charges may apply for deliveries to Northern Ireland and the Scottish Highlands.

We’re constantly finding new ways to become more sustainable, so we only select products that are built to last. We recommend looking after your planter correctly to increase its lifespan.

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 patches of uneven discolouration.
Clean annually by hosing dirt from the product with clean tap water, followed by cleaning with detergent. Do not use a pressure washer and/or scouring pad for this purpose. This damages the coating.

5 year manufacturer's structural warranty

Q) Can you supply these in any colour?

A) As long as you can provide a RAL code for a specific colour, we can fabricate it. Please note some custom RAL colours may incur start up costs.

Q) Do the the planters have drainage holes?

A) Yes, all planters with bases have a minimal amount of drainage holes, which allows our customers to drill more if required.

Q) Do you make custom sized planters?

A) Yes! Just let us know what size you require and we'll send you a quotation.

Q)How does delivery work?

A) Once your planters are ready to dispatch, we'll contact you to arrange a convenient date for delivery. We offer free kerbside delivery every weekday. We prefer if customers are at home to take delivery, but you can also authorise a safe place for them to be left at the front of your property.

Want to learn more? Give us a call

Based on a traditional seventeenth century design with bold lines and intricate mouldings

The Sienna Planter is based on a seventeenth century design, a traditional style planter with bold lines and intricate moulding. The Sienna Planter is also available in a round alternative.

This planter will develop a beautiful aged patina over time, giving them an antique classic look. The planters will arrive in a weathered zinc finish, but over time they will lighten due to the natural oxidisation process.

Constructed from heavy gauge steel and galvanised in molten zinc, these planters are then finished with a distinct patina that will naturally develop over time. Built to stand the test of time and add a designer touch to any outdoor space. Its heavy-duty materials and unique patina finish will ensure its durability and longevity. With its expert construction and superior design, these planters are guaranteed to impress and provide a long-lasting addition to your outdoor garden space for many years.

Flowing harmony

Pair seamlessly with a matching water feature

Many of Urban Grow’s galvanised zinc planters, from the stately Sienna to the elegant Versailles or sculptural Roma, can be paired with matching zinc water features, creating a seamless and coordinated look throughout your outdoor space. This pairing allows the same heritage-inspired materials, finishes, and classic lines to flow from planting to water, tying together patios, courtyards, or garden beds in one cohesive design.

Galvanised Zinc Sienna Rectangular Water Fountain (10172508012737)

The perfect partner

English Galvanised Steel Planter (10175633850561)

Galvanised zinc planters

Traditional planters and pots made to last

Mayfair Galvanised Steel Planter (10174939758785)

Weathered authentic patina

Galvanised zinc planters arrive with a beautifully new finish that naturally develops an aged patina over time, blending classic material with organic garden beauty. This evolving surface enhances textures like brick, stone and foliage, giving your outdoor space a lived‑in, heritage feel that improves with age.

Versailles Galvanised Steel Planter (10594558312641)

Historical inspiration

From the Sienna’s seventeenth‑century bold lines to the Versailles planters inspired by 18th‑century French gardens, this range is rooted in historical design. These planters bring a sense of garden heritage and architectural depth to traditional and period garden settings.

Luna Galvanised Steel Planter (10174923473089)

Contemporary & sculptural forms

Not all traditional; options such as the Luna contemporary bowl shape and the Porto slightly tapered Mediterranean‑inspired forms add sculptural presence to any outdoor space. These designs work beautifully in both modern and transitional landscape schemes.

Roma Galvanised Steel Planter (10174881693889)

Statement & ornamental pieces

For standout impact, the Roma planter echoes classical garden urns from Rome and Venice, while the Empire planter channels an Art Deco‑inspired taper with raised panels. These planters become architectural centrepieces that elevate entrances and patios alike.

A word from the expert

Contemporary Classic

The square sibling to the round Sienna brings that same seventeenth-century boldness to formal settings where symmetry matters. The intricate moulding and strong lines work beautifully in pairs flanking doorways or in multiples lining pathways. Available in three cube sizes plus a trough option, these planters offer versatility without sacrificing that period character. At 34-45kg, they're substantial enough to anchor a design scheme, while the developing patina ensures they age gracefully rather than just getting old. Perfect for traditional gardens that need structure, or contemporary spaces that want a touch of historical gravitas. Bold detailing that doesn't apologise for being noticed.