Vermiculite is a mineral which is exfoliated and bound to organic materials like Peat or composted pine bark to produce a soiless growing media. This soiless mixture promotes faster root growth and quick support for growing plants. It works well for hydroponic gardeners/farmers.
Vermiculite is an excellent growing media because it helps to retain moisture, food and air.
Vermiculite is also great for germinating seeds. It can be used alone or mixed with soil, peat or coconut coir. Very little water is needed.
Vermiculite is also a great soil enhancer or modifier. If you have heavy, compacted soil, mix up to 50% Vermiculite with your soil. This will loosen the soil, allow more aeration and drainage. The loose soil allows for better root growth. If you have sandy dry soil, Vermiculite will help retain water and introduce more air.