Calibonsai Horticultural Lava
Best premium drainage substrate for serious bonsai and succulent enthusiasts.
This volcanic rock provides essential drainage for moisture-sensitive plants like succulents and bonsai. Its small, uniform grain size makes it an ideal choice for both mixing into potting media and creating a clean, professional-looking top dressing.
$21.99
at
Amazon
Who it's for
- Bonsai enthusiasts seeking optimal root health for delicate trees
- Collectors wanting a clean, modern look for their plant displays
- Long-term gardeners looking for durable, low-maintenance substrate components
Who should skip it
- Casual growers who prefer a set-it-and-forget-it feeding routine
- Gardeners with delicate skin who prefer working without heavy gloves
- Busy plant owners who cannot commit to daily watering checks
Performance breakdown
Drainage Efficiency
Volcanic structure creates ideal airflow for sensitive root systems.
Aesthetic Versatility
Dark, uniform texture provides a clean, professional finish for displays.
Particle Consistency
Uniform sizing ensures predictable soil blending and reliable drainage performance.
Moisture Regulation
Effectively prevents stagnation while maintaining necessary stability for delicate roots.
Ease of Application
Small, manageable size makes top dressing pots simple and precise.
Root Health Support
Prevents rot by promoting rapid drying in moisture-sensitive plant species.
Key Specs
Volume
2.5 Quarts
Particle Size
1/16 inch to 3/16 inch
Color
Black and grayish
Intended Use
Cactus, Succulent, and Bonsai soil mix or top dressing
Drainage Level
High
Moisture Retention Level
Low
Know before you buy
Still have a question?
Ask Metto anything about the Calibonsai Horticultural Lava before you decide.
