Cubrosa | Onyx Dusk – 30cm Medium Concrete Square Planter – 14L Cube Plant Pot

Medium Square Planter – Ideal for Herbs, Houseplants & Compact Shrubs

Effortlessly enhances windowsills, balconies, patios, and indoor spaces with its strong architectural form in a compact footprint.

The Cubrosa concrete cube planter is a modern masterpiece crafted for exceptional durability and visual impact. This square planter is perfect for contemporary garden styling or indoor greenery, offering a sophisticated solution for urban gardeners and design enthusiasts alike. Its robust construction and sleek aesthetics make it an ideal choice for those seeking a high-quality, long-lasting planter that seamlessly blends form and function.

• 14L capacity – suitable for herbs, succulents, or compact feature plants; provides enough soil depth for healthy growth and root development, ensuring your plants thrive in this concrete cube
• 30cm H × 30cm W × 30cm D – with a 25cm planting opening for easy access and flexible styling, allowing for a variety of planting arrangements within this cube planter
• Crafted from premium pigmented cement stone – no paint, no peeling, no fading; colour is embedded throughout, ensuring long-lasting beauty and resistance to wear
• Indoor & outdoor use – sealed interior, frost-resistant and UV-stable for long-term durability in various environments, making this square planter versatile for any setting
• Pre-drilled drainage holes – maintain healthy roots and prevent water accumulation, crucial for plant health and longevity in this concrete cube planter
• Heavy-duty & secure – 11.5kg empty weight with steel-reinforced core for added strength, ensuring stability and resistance to tipping
• Low-maintenance – wipe clean finish; no sealing or treatments needed, saving time and effort in upkeep
• Flat base – sits stably on any hard, level surface indoors or outdoors, providing versatility in placement

Tip: Position the Cubrosa planter in its final location before filling with soil and plants to avoid unnecessary lifting. This concrete cube planter's substantial weight ensures stability but can make relocation challenging once filled.

Why Choose the Cubrosa Square Planter?

• Architectural cube shape – strong, modern form ideal for structured or minimalist planting, perfect for creating bold statements in any space
• Pigmented Onyx Dusk colour – a sophisticated blend of charcoal, black and grey tones that won't chip or fade over time, maintaining its elegant appearance for years
• Concrete strength with artisanal texture – raw finish and hand-poured variation give each planter unique character, combining industrial durability with artistic appeal
• Steel-reinforced structure – highly durable and crack-resistant, even in commercial or exposed locations, ensuring longevity and reliability
• 14L soil capacity – optimised for compact root systems while supporting healthy plant growth, making it suitable for a wide range of plant species
• Year-round use – internally sealed, frost-proof and UV-resistant to perform in any environment, from scorching summers to freezing winters
• Sustainably crafted – handmade by artisans using low-waste production methods, appealing to environmentally conscious consumers
• Perfect for layering – use alone or alongside larger Cubrosa planters for stepped, geometric impact, creating visually striking arrangements

Full Description

Introducing the Cubrosa — a bold square concrete planter that brings geometric elegance and durable performance to compact outdoor or interior spaces. With its cube silhouette and grounded proportions, the 30cm planter offers sculptural interest in a manageable size — perfect for balconies, countertops, entryways or clustered displays.

Each planter is hand-cast from premium pigmented cement stone and finished by skilled artisans to reveal a natural, tactile surface with soft imperfections and tonal variation. The Onyx Dusk colour — a sophisticated blend of charcoal, black and grey — runs throughout the material for a fade-free, chip-resistant finish.

Built to perform in real-world conditions, the Cubrosa is internally sealed, frost-proof, and UV-stable, making it ideal for year-round outdoor use. Pre-drilled drainage holes support root health, while the steel-reinforced walls and 11.5kg weight ensure reliable stability in both indoor and high-traffic environments.

Designed for both aesthetics and longevity, the Cubrosa 30cm planter delivers professional-grade quality in a striking, compact form.

FREE UK Mainland Delivery on all products: Estimated delivery is 2–5 working days from dispatch.

Large & Oversized Items (e.g. Sofas, Mattresses, Furniture etc): 3 to 10 working days via our specialist furniture courier. We will contact you to arrange a convenient delivery date.

Please refer to our Shipping Policy to ensure your items are delivered smoothly.

Please note: Please ensure there is a clear pathway for our Courier to deliver your item to the ground floor of your property. Failure to do so may result in an unsuccessful delivery. Please check the item description and dimensions to ensure that the item fits through your doors and hallways for a swift delivery. 

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