Cubrosa | Onyx Dusk – 20cm Medium Concrete Square Planter – 4L Cube Plant Pot

Square Concrete Planter – Ideal for Herbs, Succulents & Compact Greenery

Perfect for windowsills, shelves, side tables, balconies, patios, garden tables and compact outdoor spaces.

The Cubrosa square planter in Onyx Dusk is designed for customers who want a durable concrete plant pot that works beautifully both indoors and outdoors. Its compact 20cm cube form fits neatly on shelves, windowsills, side tables and kitchen counters, while also bringing bold structure and contrast to balconies, patios, garden tables and smaller outdoor spaces.

The deep Onyx Dusk colourway adds a contemporary charcoal black-grey tone that makes green foliage stand out beautifully. With its balanced square profile, tactile stone-like texture and durable pigmented concrete construction, Cubrosa brings a bold architectural feel to herbs, succulents, compact houseplants and decorative greenery in almost any setting.

• 4L capacity – ideal for herbs, succulents, compact houseplants and decorative plant displays
• 20cm W × 20cm D × 20cm H – compact cube shape for shelves, windowsills, side tables, patios and balconies
• Bold Onyx Dusk colourway – a deep charcoal, black and grey tone that makes greenery stand out
• 2cm concrete wall thickness – gives the planter a substantial, durable feel while keeping proportions neat
• Pigmented concrete – no paint, no peeling; colour runs through for a long-lasting finish
• Indoor & outdoor use – sealed, UV-stable and frost-resistant for year-round versatility
• Drainage holes included – helps prevent waterlogging and supports healthier root systems
• Matching bases/saucers available – ideal for indoor use to catch excess water and protect surfaces
• Low maintenance – simple wipe-clean surface, no sealing or refinishing needed
• Flat base – sits securely on shelves, tables, patios or ledges without wobble

Tip: For indoor styling, pair the Cubrosa with one of our matching bases/saucers, available separately. They work neatly with the planter to catch excess water from the drainage holes, reduce mess after watering and help protect shelves, windowsills, tabletops and kitchen surfaces.

Why Choose the Cubrosa Planter?

Bold Onyx Dusk colourway – The Onyx Dusk finish brings together deep charcoal, black and grey tones for a darker, more contemporary look. It creates strong contrast against green foliage and works especially well in modern interiors, monochrome spaces, industrial styling and minimalist outdoor displays.

Made for indoor & outdoor styling – Cubrosa works just as well inside the home as it does outside. Use it for herbs in the kitchen, succulents on a shelf, foliage on a side table, or compact greenery on patios, balconies and garden tables.

Clean square shape – The structured cube design gives compact greenery a more architectural look than a standard round plant pot. It works especially well where sharp lines, balanced proportions and neat styling matter.

Designed to make indoor planting easier – Indoor plants look beautiful, but watering, drainage and surface protection can become frustrating. Cubrosa is designed with drainage holes for plant health, while matching saucers are available separately to help make indoor use cleaner, easier and more practical.

Complete the indoor setup with a matching saucer – Indoor planters look best when they feel intentional, not improvised. Our matching bases/saucers are designed to pair neatly with the Cubrosa, helping catch excess water, protect furniture and create a more finished planter display.

Compact 4L volume – Perfect for herbs, succulents and neat plant displays where you want a stylish planter without taking up too much space. It gives compact plants room to grow while remaining easy to position around the home or garden.

Space-saving proportions – At 20cm wide, 20cm deep and 20cm tall, the Cubrosa is ideal for windowsills, shelves, desks, side tables, kitchen counters, balcony corners, patios and smaller garden spaces.

Premium pigmented concrete – The Onyx Dusk colour is blended through the planter rather than applied as surface paint, helping prevent flaking, peeling or fading over time. This gives the planter a more durable, authentic finish than painted alternatives.

Solves the plastic pot problem – Many plant pots can look lightweight, glossy or temporary. Cubrosa’s concrete texture, bold Onyx Dusk tone and clean square shape create a more permanent, styled look that feels considered indoors and outdoors.

Artisan texture & finish – Hand-poured and hand-finished with subtle pitting, tonal variation and raw concrete character, each planter has a natural, crafted appearance that works beautifully with foliage.

Durable concrete construction – The 2cm wall thickness gives the planter a sturdy, premium feel while keeping it manageable for everyday styling and repositioning.

Weather-resistant – Internally sealed, frost-resistant and UV-stable, making it suitable for outdoor displays throughout the year as well as indoor use.

Versatile modern design – The simple square shape works beautifully with herbs, succulents, trailing plants and compact greenery in contemporary, traditional, indoor and outdoor spaces.

Full Description

The Cubrosa 4L planter in Onyx Dusk brings clean modern design, bold contrast and tactile concrete texture to compact plant displays. With its 20cm width, 20cm depth and 20cm height, this square concrete planter is perfect for styling herbs, succulents, compact houseplants and decorative greenery across windowsills, shelves, desks, side tables, kitchen counters, balconies, patios and garden tables.

The Onyx Dusk colourway is one of Cubrosa’s most contemporary finishes. Its deep blend of charcoal, black and grey tones works beautifully with green foliage, pale interiors, natural wood, concrete surfaces, black accents and modern outdoor schemes. It adds definition and contrast without overpowering the plant itself, making it especially useful where white feels too bright or warmer tones feel too soft.

The cube shape gives Cubrosa a more structured, architectural look than a traditional round plant pot. Its clean edges and balanced proportions make it easy to style in pairs, rows or grouped displays, especially on shelves, sideboards, kitchen counters, compact patios and balcony spaces.

Its compact proportions make it useful wherever space matters. The 4L internal volume is ideal for smaller plants, herbs and succulents, while the 20cm cube form gives enough visual presence to feel styled rather than purely functional.

For customers styling plants indoors, the matching saucer is the natural add-on. It helps solve the common problems of water marks, excess drainage and unfinished-looking plant displays, while giving the Cubrosa a cleaner, more considered look on furniture, windowsills and kitchen surfaces.

The included drainage holes help support healthier roots by allowing excess water to escape. When paired with a matching base or saucer, the planter becomes a more practical indoor set, helping reduce mess after watering while protecting shelves, tabletops and ledges from moisture.

Each Cubrosa planter is made from pigmented concrete, giving it a durable, stone-like finish where the Onyx Dusk colour runs through the material rather than sitting on the surface as paint. This helps create a long-lasting appearance that won’t peel or flake, while the natural pitting and subtle variation give every planter its own handcrafted character.

Designed for flexible use, the Cubrosa is internally sealed, UV-stable and frost-resistant, making it suitable for both indoor and outdoor placement. The flat base allows the planter to sit neatly on solid, level surfaces, while the durable 2cm concrete wall gives it a reassuring, premium feel.

Compact, durable and easy to style, the Cubrosa 4L planter in Onyx Dusk is ideal for adding greenery to tighter spaces without compromising on quality, texture or visual impact. Use it outdoors for patio and balcony plants, or pair it with a matching base or saucer indoors to protect surfaces, reduce watering mess and complete the look.