0–4 mm
Medium Building
Moisture Moderation
Green Grove Soil 0–4 mm
A fine-to-medium grade designed for medium building, blend improvement, and higher structural stability with moderated moisture retention.
Green Grove Soil is a natural volcanic growing medium with high porosity that enhances aeration, drainage, and balanced moisture retention, while supporting stronger roots and healthier plant vitality. It also improves the stability of growing mixes and reduces compaction and shrinkage, making it suitable for soil, greenhouses, nurseries, and soilless cultivation.
It is available in three functional grades: 0–4 mm for improving soil and growing mixes with balanced moisture retention; 4–8 mm for balanced aeration, drainage, moderate moisture retention, and structural stability; and 10–25 mm for high aeration, hydroponics, aquaponics, surface dressing, and specialized coarse growing mixes.
Functional benefits built around root-zone engineering and growing-medium behavior in real applications.
Porous particles increase post-drainage air space and support root respiration and biological activity within the medium.
It neither traps water like a suffocating medium nor sheds it like dense stone; it balances free-water removal with retention of available moisture.
Improves structural stability in growing mixes and reduces shrinkage, settling, and compaction over time, especially in light organic media.
The product’s primary value is optimizing the relationship between air, water, drainage, and structural stability around the root zone.
Its rough, porous surface supports granular media systems and aquaponics while providing suitable area for biofilms under correct operation.
The coarser grade performs well as a long-life top dressing, helping reduce evaporation, moderate surface temperature, and improve appearance.
Three functional grades from the same volcanic raw material, each with clearly different horticultural behavior according to particle size.
A fine-to-medium grade designed for medium building, blend improvement, and higher structural stability with moderated moisture retention.
A medium grade designed for balanced aeration, drainage, moderate moisture retention, and structural stability in pots, granular systems, and agricultural growing mixes.
A highly aerated coarse grade designed for air, drainage, and structural stability, suitable for granular systems and long-life top dressing.
Grade selection is determined by application function: medium building and moisture management, or higher air and faster drainage.
The fine-to-medium grade designed for building growing mixes, improving stability, and providing moderated moisture retention.
Choose 4–8 mm when you need a balance between aeration, drainage, and moderate moisture retention. Choose 10–25 mm when higher air space, faster drainage, and greater particle stability are the priority.
In certain mineral systems sensitive to drying or in very fast-draining mixes, the fine medium can be supported with a limited portion of the coarse grade to raise aeration without pushing the mix to dry too quickly.
Core functional placements by cultivation system, as defined by each grade’s behavior within the medium.
The 0–4 mm grade is used primarily within the active root zone; 4–8 mm can provide balanced aeration and drainage; or 10–25 mm can be selected when higher aeration or surface dressing is required.
The 0–4 mm grade supports medium building and moisture management; 4–8 mm can provide balanced aeration and drainage; or 10–25 mm can be used where higher aeration and faster drainage are required.
Washed 4–8 mm or 10–25 mm can be used in media beds and selected flood-and-drain systems, with the appropriate grade determined by system design, aeration, drainage, and irrigation management.
Washed 4–8 mm or 10–25 mm can be used in aquaponic media systems depending on design, providing root support and surface area for biofilms with appropriate cleaning and flow management.
A balanced blend led by 0–4 mm with an organic base in pockets, or a support-only use in channels; the shallower the pocket, the greater the need for a less coarse medium.
The grades can be positioned by function: 0–4 mm for medium improvement and moisture management, 4–8 mm for balanced pots and blends, or 10–25 mm for higher-aeration applications and durable top dressing.
The same volcanic raw material, but with clearly different horticultural behavior as particle size changes.
| Criteria | 0–4 mm | 4–8 mm and 10–25 mm |
|---|---|---|
| Primary Function | Medium building and moisture management | Aeration and drainage; particle size determines drainage rate and air space |
| Approx. Bulk Density | 0.9 g/cm³ | 0.7 g/cm³ |
| pH | ≈ 7.0 | ≈ 7.0 |
| Moisture | < 0.6% | < 0.6% |
| Typical Use | Growing mixes and root-zone improvement | Pots, containers, granular systems, coarse blends and top dressing depending on particle size |
A concise technical reading built on the comprehensive guide and on how each grade behaves in horticultural use.
The remaining analyses are attached in the physical and chemical analysis file at the bottom of the page.
One section combining the main operating controls with the economic advantage of reusing the coarse grade.
Packing and preparation based on customer and shipment requirements
Support for required technical and export documentation
Commercial supply for distributors, projects and international markets
Shipment coordination according to destination and quantity
We provide flexible and reliable export solutions for agricultural volcanic tuff, with shipment preparation tailored to market requirements and support for technical documentation and logistics coordination for distributors, projects and international markets.
Green Grove Soil operates with a monthly production capacity designed to support commercial supply, distributors and agricultural projects, with the ability to scale according to order volume and project requirements.
Capacity can be increased according to order volume and project requirements.
Visual documentation showing agricultural volcanic tuff and modern growing environments in practical agricultural applications.
Visual documentation showing plant development and dense growth within a controlled modern agricultural environment.
Visual documentation showing the porous volcanic material around the root zone as a supporting growing medium in hydroponic and greenhouse applications.
Concise answers to the most important technical questions that shape the buying decision.
Professionally, it should be read as a highly porous volcanic mineral growing medium engineered for root-zone management, not as a standalone substitute for a fertilization program.
When the priority is building the mix, improving structural stability, and moderating moisture inside the growing medium, soil, or grow bags.
Choose 4–8 mm for balanced aeration, drainage, and moderate moisture retention, or 10–25 mm when the priority is higher root-zone air, faster drainage, granular systems, or durable top dressing.
The 4–8 mm or 10–25 mm grades can be used after washing in media-based hydroponic and aquaponic systems according to system design. In NFT and DWC, granular media should be limited to supporting the seedling rather than filling the channel or bed.
The 4–8 mm or 10–25 mm grades should be rinsed when used in granular or water-based systems, while 0–4 mm is best lightly moistened before mixing when dust is present.
No. True drainage improvement comes from the composition of the entire medium profile. A basal layer is used only to protect drainage holes or add stability when needed.
It can be reused after sorting, cleaning, and reconditioning, while verifying medium cleanliness, operating suitability, and pH/EC readings before returning it to service.
No. Plant nutrition remains tied to the fertilization program and irrigation-water quality, while the role of the product is engineering the root zone.
Core approvals, technical cards, and operating documents.
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Green Grove Soil Factory — Madinah, Saudi Arabia
Phone: 00966530547776
Phone: 00966550110915
Email: info@greengrovesoil.com
Business Hours: Saturday - Thursday, 8:00 AM - 5:00 PM