Vermiculite: meaning, definitions and examples

mineral material

Vermiculite is a hydrated phyllosilicate mineral that is used for a variety of applications, primarily as a soil amendment in gardening and horticulture. When heated, it expands significantly, creating lightweight, porous granules that retain moisture and provide good aeration to the soil. Due to its high capacity for holding water and nutrients, vermiculite is often added to potting mixes and used in hydroponics. It is also utilized in insulation materials and packaging, owing to its excellent thermal properties. While beneficial, there are concerns about naturally occurring asbestos in some vermiculite deposits, making it important to source the material from reputable suppliers.

expanding mineral, soil amendment

Examples of usage

• Add vermiculite to your potting mix for better drainage.

• The gardening store sells bags of vermiculite.

• Vermiculite is used to improve soil aeration.

• Some insulation products contain vermiculite.

• Many gardeners prefer vermiculite over perlite.