A rectangular rust-orange metal planter box filled with ornamental grasses and small plants, placed on a stone patio in a landscaped garden with green grass and shrubs in the background. Corten weathering steel
Beige stone pavers laid out in a modern outdoor patio area next to a green lawn and a rusted metal planter box. Corten steel planter tub
Corten steel garden planter tub, with dark paving and modern fence
A modern backyard patio with light gray stone pavers, a tall wooden fence, a wooden gate, and a large rectangular copper-toned planter box with green plants and small white flowers. A brick house and trees are visible in the background under a blue sky. Corten steel
★★★★★ 4.9 (127 reviews)

Bloc Corten Steel Planter Tub – 900mm

Corten Steel Garden Planter – 500mm High

The GEO Corten Steel Planter Tub is a simple, durable garden planter designed to add structure and planting to patios, courtyards, entrances and landscaped gardens.

Available in four practical sizes, each planter is manufactured from Corten weathering steel and supplied as a complete flat-pack kit with four side panels, a steel base, fixings and assembly instructions.

The Corten steel is supplied un-weathered and will naturally develop its distinctive rust-coloured protective patina when exposed to the elements.


Key Benefits

  • Durable Corten steel garden planter
  • 500mm high across the complete range
  • Steel base included
  • Simple flat-pack design
  • Complete with fixings and assembly instructions
  • Freestanding – ideal for patios and hard landscaped areas
  • Natural Corten finish develops over time
  • Creates defined planting and garden zones

Product Specification

  • Height: 500mm
  • Width: 500mm
  • Material: Corten weathering steel
  • Finish: Supplied un-weathered – develops a natural rust-coloured patina
  • Base: Corten steel base included
  • Assembly: Required

Included in Each Planter Kit

  • 4 × Corten steel side panels
  • 1 × Corten steel base
  • Assembly fixings
  • Installation instructions

Assembly required - Available Sizes

900mm (L) × 500mm (W) × 500mm (H)
Versatile rectangular planter for patios, entrances and garden planting.


Ideal For

  • Garden planters
  • Patio planting
  • Courtyards
  • Entrance planting
  • Garden zoning

Corten Steel Finish

Your planter will arrive in its natural un-weathered Corten steel finish. Once outside, exposure to moisture and air gradually develops the warm orange-brown patina associated with Corten steel.

The appearance will continue to mature over time, creating a natural finish that works particularly well alongside planting, stone, timber, gravel and paving.

Please note: Corten can produce rust-coloured runoff during the initial weathering process, so care should be taken when positioning the planter on pale or porous surfaces.

£330.29
🚚 Next Day Delivery — order before 12pm Mon–Fri
20-Year Guarantee
🇬🇧 100% British Made
® Patent Protected

Easy to install

Toolless assembly in 8 minutes

20-Year Guarantee

Built to outlast your garden

📦

Everything included

Fixings, spikes, instructions

🚚

Next day delivery

Order before 12pm Mon–Fri

Customer Reviews
4.9
★★★★★
127 verified reviews
5 star
78%
4 star
14%
3 star
5%
2 star
2%
1 star
1%
J
James H. Cotswolds · March 2026
✓ Verified
★★★★★

Absolutely worth the price

Finished assembling in 20 minutes. The locking corners are a piece of engineering genius. Two winters in and it still looks brand new.

S
Sarah M. London · February 2026
✓ Verified
★★★★★

Transformed our courtyard

Three Contour beds in the back garden — modern, clean, and the Dark Forest finish is exactly what we hoped. Great service too.

D
David R. Yorkshire · January 2026
✓ Verified
★★★★★

Serious quality

I'm a landscaper. These are the best raised beds I've installed. Recommending to every client now.

P
Priya K. Somerset · December 2025
✓ Verified
★★★★★

Easy and beautiful

Unboxed, assembled and filled with soil in an afternoon. Looks incredible. The Corten finish has developed a gorgeous patina.