Fine Vermiculite - Perfect Moisture Retention, Strong Roots
Vermiculite, a phyllosilicate mineral, is derived from rocks containing amphibolite or biotite minerals. Its notable feature is a flat crystalline structure, and it undergoes substantial expansion when subjected to heat.
The metamorphic process involves rocks with abundant amphibolite or biotite minerals experiencing elevated temperatures and pressure, resulting in the formation of vermiculite. This mineral's distinct structure enables it to absorb water and nutrients, supporting robust plant growth. Expanded vermiculite possesses excellent qualities for soil mixes and potting mediums, such as superior aeration and moisture retention abilities.

I, VERMICULITE: STRUCTURE & PROPERTIES
Vermiculite has a structure composed of spiral phyllosilicate layers with dispersed water and metal ions. These layers create gaps, allowing for significant expansion when heated. It is white to light brown and available in compressible flakes.
VERMICULITE POSSESSES A RANGE OF PROPERTIES, INCLUDING:

Heat resistance: Vermiculite exhibits excellent resistance to high temperatures, ensuring it remains unaffected by burning.
Effective hygroscopicity: With its notable hygroscopic ability, vermiculite efficiently retains water within the soil.
Strong electrical insulation: Vermiculite demonstrates remarkable electrical insulation properties, making it valuable in applications related to thermal insulation.
Swelling capacity: When subjected to heat, vermiculite undergoes rapid and substantial swelling, expanding to double or even multiple times its original size.
II, PRODUCTION & SCREENING PROCESS
The production and screening process of vermiculite typically involves the following steps:
Mining: Vermiculite stone is extracted from vermiculite mines or deposits.
- Crushing & milling: The vermiculite is crushed and milled into smaller particles.
- Heating: Vermiculite beads are placed in a furnace and subjected to high temperatures, usually ranging from 800°C to 1000°C. This heating process induces swelling, creating gap between the layers of vermiculite.
- Screening: Following the heating process, the vermiculite is screened to separate particles based on size and eliminate impurities.
- Sterilization: After screening, the vermiculite undergoes manual sterilization treatment to ensure its purity and maintain its structural integrity.
- Packaging & distribution: The vermiculite is packaged appropriately and distributed to consumers or businesses for use in horticulture. Its popularity as a soil additive stems from its ability to enhance soil quality and create optimal conditions for plant growth.
III, USAGE GUIDELINES
A. Soil mixture with vermiculite
1. Determine the appropriate mixing ratio based on this suggestion:
- For potted plants/growing mediums: Incorporate 25 - 50% vermiculite into the growing medium, which can consist of soil or organic matter. The specific ratio depends on the plant type and its requirements for aeration and water retention.
- For hydroponic systems: Combine 10 - 20% vermiculite with an inert substance, such as perlite or crushed rock, to create a well-ventilated & water - retentive environment suitable for plant growth.
=> Please note that the vermiculite mixing ratio may vary depending on the specific plant species and intended use.
2. Mix vermiculite with potting soil or other ingredients such as torf, compost, or fertilizer and mix well
Benefits of using vermiculite in the soil mix:
- Enhances soil aeration, allowing plant roots to better absorb oxygen.
- Improves water drainage, prevents soil waterlogging, and supports healthy root development.
- Retains soil moisture, helping maintain the necessary level of moisture for plants without excessive saturation and limiting rapid evaporation.
B. Soil cover with vermiculite
- Determine the area around the plant base that needs coverage with vermiculite.
- Ensure the soil around the base of the plant is moist before applying the vermiculite mulch.
- Spread a thin layer of vermiculite, starting from the trunk and extending outward in a circular shape.
Benefits of using vermiculite as a soil cover:
- Maintains soil moisture: Vermiculite acts as a protective layer, keeping the soil around the plant base moist by reducing evaporation.
- Shields plant stumps from sunlight: Applying vermiculite as a coating helps shield tree stumps from direct sunlight, lowering the risk of leaf burn and damage.
- Suppresses weed growth and insects: Vermiculite acts as a natural deterrent to weeds and harmful insects, creating a healthier environment around the base of the tree.
C. Egg incubation with vermiculite
Vermiculite, a natural mineral with thin, smooth sheets similar to mica, finds practical application in reptile egg incubation. Its versatile uses in this context include:
Buffering agent: Vermiculite's water retention capacity creates a suitable buffering environment for reptile eggs. By incorporating vermiculite as a buffer, it helps maintain consistent humidity and a stable temperature around the eggs.
- Support for incubation: Vermiculite fosters a breathable environment around the eggs, preventing excessive pressure buildup. This facilitates gas exchange and promotes healthy growth & development.
- Humidity regulation: With its water absorption and retention properties, vermiculite enables precise control of humidity levels within the incubation environment. This ensures optimal moisture for the eggs' development.
- Thermal insulation: Vermiculite's excellent insulation properties contribute to maintaining a stable temperature inside the egg incubator. This is crucial for the proper development of the eggs.
- Safety & non-toxicity: Vermiculite is a natural, non-toxic material that poses no harm or irritation to reptiles. It is a safe choice for egg incubation purposes.
However, it is essential to consider the specific requirements of each reptile species and seek guidance from experts or researchers to ensure the incubation environment meets the unique needs of each species.
IV, STORAGE
To maintain the quality of vermiculite, you should:
- Proper storage: Store vermiculite in a dry and well-ventilated area to prevent moisture absorption and the growth of bacteria or mold.
- Secure packaging: After using vermiculite, make sure to seal the packaging tightly. This will preserve its freshness and prevent foreign impurities from entering.