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 two functional grades: 0–4 mm for improving soil and growing mixes with balanced moisture retention, and 10–25 mm for high aeration, hydroponics, aquaponics, surface mulching, 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.
Two functional grades from the same volcanic raw material, yet with clearly different horticultural behavior depending on particle size.
A fine-to-medium grade designed for medium building, blend improvement, and higher structural stability with moderated moisture retention.
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.
The highly aerated coarse grade designed for air, drainage, and structural stability in granular applications, coarse mixes, and top dressing.
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, while 10–25 mm can support the surface when top dressing, improved appearance, and reduced evaporation are needed.
The 0–4 mm grade is the base, either alone or with a limited portion of 10–25 mm when aeration needs correction within a more stable mineral medium.
Washed 10–25 mm is the preferred choice for media beds, individual containers, and selected flood-and-drain systems with proper water and leachate monitoring.
Washed 10–25 mm supports roots and provides surface area for biofilms, with periodic cleaning needed to prevent clogging and anaerobic zones.
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.
One of the strongest placements for both products together: 0–4 mm within planting beds to improve the medium, and 10–25 mm as a long-life top dressing that reduces evaporation and increases visual value.
The same volcanic raw material, but with clearly different horticultural behavior as particle size changes.
| Criteria | 0–4 mm | 10–25 mm |
|---|---|---|
| Functional Identity | Fine grade for medium building and moisture moderation | Coarse grade for higher air and faster drainage |
| Approx. Bulk Density | 0.9 g/cm³ | 0.7 g/cm³ |
| pH | 7.0 | 7.0 |
| Moisture | Less than 0.6% | Less than 0.6% |
| Dry Matter | 99.4% | 99.4% |
| Strongest Applications | Growing mixes, grow bags, soil improvement, and selected fine mineral media | Media beds, aquaponics, coarse mixes, top dressing, succulents, and orchids |
| Best Placement | Fine mineral root-zone improver | Coarse volcanic medium with high aeration |
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.
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.
When the priority is root-zone air, fast drainage, granular systems, or long-life top dressing.
The 10–25 mm grade suits media-based hydroponics and aquaponics after thorough washing. In NFT and DWC, use is limited to supporting the seedling only, not filling the channel or bed.
The 10–25 mm grade should be washed thoroughly for hydroponic and aquaponic 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