






Cubrosa | Onyx Dusk – 100cm XXL Concrete Square Planter – 782L Block Plant Pot
KEY FEATURES

Height: 100 cm

Width: 100 cm

Wall Thickness:

Volume: 782 L
Hand crafted

Frost Resistance

Weight: 165 kg

Reinforced for maximum strength and longevity

Suitable for indoor and outdoor use
Suitable for domestic and commercial settings
XXL Square Planter – Ideal for Trees, Feature Shrubs & Architectural Displays
Instantly enhances grand entrances, courtyards, and commercial landscapes with bold structure and heavyweight durability.
A sculptural concrete planter with a clean-lined block form, crafted from pigmented cement stone for timeless strength and visual impact.
- 782L capacity – perfect for mature trees, architectural shrubs, and large-scale plantings
- 100cm × 100cm × 100cm – commanding cubic proportions with a 91cm planting opening
- Crafted from pigmented cement stone – no paint, no peeling, no fading; colour runs throughout the body
- Indoor & outdoor use – internally sealed for moisture resistance; frost- and UV-resistant for year-round performance
- Pre-drilled drainage holes – promote root health and prevent water buildup
- Heavy-duty build – 165kg empty weight with steel-reinforced core for structural stability and theft resistance
- Flat base – sits securely on any solid, level surface
- Low-maintenance – no sealing required; wipe clean as needed
Tip: Position the Cubrosa planter before filling to avoid lifting post-planting — it’s extremely heavy once in place.
Why Choose the Cubrosa Square Planter?
- Premium pigmented concrete – colour is part of the material, so chips and scratches won’t reveal a different layer
- XXL 782L capacity – provides expansive space for trees and deep-rooted plant systems
- Raw hand-finished texture – natural pitting and surface variation make every piece unique
- Engineered durability – steel reinforcement resists cracks and impact in high-traffic or exposed areas
- Weatherproof design – UV-stable, frost-resistant, and internally sealed
- Colour integrity – Onyx Dusk is a deep charcoal blend of black and grey tones that won’t fade in sunlight
- Sustainable craftsmanship – handmade by artisans using low-waste techniques
- Architectural presence – perfect for formal entrances, luxury developments, or urban landscaping
Full Description
Introducing the Cubrosa – a striking square planter with bold geometric lines and uncompromising durability. Designed to make a powerful architectural statement, this XXL cube planter offers incredible scale and capacity, ideal for trees, structural shrubs, or large feature displays in both residential and commercial environments.
Each planter is hand-poured using premium pigmented cement stone, creating a raw, organic texture that showcases natural imperfections and character. The Onyx Dusk finish – a sophisticated blend of charcoal, black and soft grey tones – runs through the entire planter body, ensuring it won’t chip or flake over time.
The Cubrosa is built to last, with an internally sealed cavity, frost-proof exterior, and integrated drainage to keep plants healthy. Reinforced with a steel core and weighing 165kg unfilled, it’s exceptionally sturdy – ideal for public or exposed spaces where stability and theft-resistance are essential.
With no assembly, no coatings, and no maintenance beyond the occasional wipe-down, this is a planter that’s as effortless as it is impactful.
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Measure First
Ensure the pots will fit through all access points, including doorways, gates, and pathways.
Consider the Weight
Many of our pots are heavy - some over 100kg - and are delivered on a pallet to the kerbside only.
You may need special equipment or assistance to help move your pot to their final location.
Inspect on Delivery
Check your items immediately upon arrival. Please take photos or videos when unwrapping to document any potential damage.
Handle With Care
Cutting the security straps of the item confirms acceptance. Once opened, full refunds are no longer available.
Returns Policy
We accept returns of unopened, undamaged items. Costs of return delivery will be deducted from your refund which can be up to £100 depending on location.
Larger Items
- Larger items are delivered palletised to kerbside via a specialist carrier.
- We require a solid, flat surface to safely unload using a pump truck.
- Delivery is to ground-level only and cannot be made on steep inclines.
- Please ensure your delivery location is accessible and level to avoid delays.
Positioning & Surface Protection
- Place on a level surface: Ensure your planter is positioned on stable, level ground to prevent tipping or uneven weight distribution.
- Use rubber feet or pot risers: Elevate your planter slightly with rubber feet or spacers. This improves drainage, prevents waterlogging, and protects the surface underneath from staining or damage.
Drainage & Soil Preparation
- Create a drainage layer: Fill the bottom 10% of the pot with drainage materials such as gravel, broken terracotta, or even clean plastic bottles. This encourages water flow and prevents root rot.
- Avoid overfilling with soil: Fill your planter 80-90% full with high-quality soil or compost. Leave room at the top to allow for watering and mulch if needed.
Tree & Plant Selection
- Choose suitable species: Only plant trees and shrubs that are suitable for container growth. Select species with compact or non-invasive root systems to avoid cracking or damaging the pot over time.
Weather Protection
- Frost protection in winter: Although our planters are sealed and frost-resistant, we recommend protecting them during extreme winter conditions. Use breathable covers or move planters to a sheltered location to prevent frost damage.
Indoor Use
- Seal around drainage bung if needed: For indoor placement, we suggest sealing around the temporary drainage bung before filling to prevent leaks. Use silicone or a waterproof sealant if required.
- We advise placing the pot on rubber pot feet or a rubber mat to protect floors
Full Specifications
◎ Height: 100 cm
◎ Width: 100 cm
◎ Depth: 100 cm
◎ Weight: 165 kg
◎ Pot Material: Premium Cement Stone
◎ Colour: Onyx Dusk (charcoal, black, grey)
◎ Suitable For: Indoor and Outdoor Use
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