Cubrosa | Onyx Dusk – 85cm Extra Extra Large Concrete Square Planter – 459L Block Plant Pot

XXL Square Planter – Ideal for Feature Trees, Architectural Shrubs & Commercial Landscapes

A bold, geometric concrete planter designed for statement planting in expansive outdoor and commercial environments.

The Cubrosa range blends architectural form with industrial-grade durability — crafted from premium pigmented cement stone for enduring beauty and structural strength. This square planter exemplifies the perfect balance between aesthetics and functionality, making it an ideal choice for both residential and commercial landscapes.

• 459L capacity — perfect for specimen trees, sculptural shrubs, or large-scale floral arrangements, offering deep space for healthy root development. This generous volume ensures optimal growth conditions for a wide variety of plants, from towering palms to sprawling ornamental grasses.
• 85cm × 85cm × 85cm — classic cube profile with a 77cm planting opening for easy styling and replanting. The substantial dimensions of this Cubrosa planter create a commanding presence in any setting, while the wide opening facilitates hassle-free maintenance and plant care.
• Crafted from premium pigmented concrete — no paint, no peeling, no fading; colour runs through the full body. This innovative pigmented cement stone construction ensures long-lasting beauty and eliminates the need for repainting or surface treatments.
• Indoor & outdoor use — internally sealed, UV- and frost-resistant for year-round performance. The versatility of the Cubrosa planter allows for seamless integration in various environments, from sun-drenched patios to sheltered indoor spaces.
• Pre-drilled drainage holes — ensure optimal plant health and effective water management. This thoughtful feature prevents waterlogging and promotes proper root aeration, crucial for the longevity of your plants.
• Reinforced with steel — structural core adds durability and crack-resistance. The steel reinforcement enhances the planter's ability to withstand environmental stresses and heavy loads, ensuring its longevity in demanding settings.
• Secure & stable — substantial 111kg empty weight deters theft and resists movement. This hefty construction provides peace of mind in high-traffic areas or exposed locations, reducing the risk of accidental tipping or unauthorized relocation.
• Flat base — sits flush on any level surface, from paving to decking. The stable foundation ensures proper weight distribution and prevents damage to underlying surfaces, making it suitable for a variety of architectural contexts.

Tip: Position the Cubrosa planter in its final location before filling, as it becomes extremely heavy once planted. This foresight will save time and effort in the long run, ensuring your landscape design is executed precisely as envisioned.

Why Choose the Cubrosa Planter?

• Geometric design with bold lines — adds a structured, architectural touch to gardens, courtyards, and entrances. The clean, minimalist aesthetic of this square planter complements both modern and traditional landscapes, serving as a versatile design element.
• Pigmented cement stone construction — retains colour even when scratched or weathered. This innovative material ensures that the Cubrosa planter maintains its sophisticated appearance for years, even in challenging outdoor conditions.
• Sculptural matte texture — hand-finished surface with subtle pitting and raw character. The artisanal finish adds depth and visual interest, creating a unique tactile experience that enhances the overall aesthetic appeal.
• XXL 459L volume — supports deep root systems and large plant specimens. This generous capacity allows for the cultivation of impressive botanical displays, from majestic trees to lush, multi-layered plantings.
• Extreme weather resistance — UV-stable, frost-proof, and internally sealed for longevity. The Cubrosa planter's resilience to diverse climate conditions ensures it remains a steadfast element in your landscape design, regardless of seasonal changes.
• Heavy-duty build — steel-reinforced walls and high empty weight for secure placement. This robust construction provides stability and durability, making the Cubrosa planter an excellent investment for long-term landscape projects.
• Organic artisan finish — each piece is unique and handcrafted with sustainable methods. The individuality of each Cubrosa planter adds character and authenticity to your space, reflecting a commitment to artisanal craftsmanship.
• Perfect for commercial or high-traffic spaces — durable enough for urban settings, hotels, or public realms. The Cubrosa planter's ability to withstand the rigors of busy environments makes it an ideal choice for creating impactful green spaces in commercial and institutional settings.

Full Description

Introducing the Cubrosa – a commanding square planter designed to anchor expansive spaces with strength and style. With its oversized cubic silhouette, this 85cm vessel offers the scale and volume needed for standout trees, topiary, or formal shrubbery. Its 459-litre capacity provides generous soil depth and root room to support large-scale plantings that thrive over time.

Each Cubrosa planter is hand-cast using pigmented concrete and features steel-reinforced walls to ensure it holds its shape and strength in any climate. The raw surface texture is hand-finished, with natural pitting and artisan imperfections that give every piece individuality and a grounded, organic feel.

Finished in Onyx Dusk — a sophisticated blend of charcoal, slate, and black pigment — the colour is embedded through the entire planter body. There’s no risk of fading, peeling or colour mismatch, even with age or surface wear.

With built-in drainage, interior waterproofing and a heavy, secure footprint, the Cubrosa is ideal for both private and public applications — from luxury residential gardens to municipal landscapes, rooftop terraces, or hospitality settings.

This is form-meets-function planter design: architectural, durable, and built to last decades.