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Vermiculite is the mineral Mica, super-heated to expand much like an accordion. This mineral is often used in soil mixes to increase water holding. Many growers use vermiculite in their flats in order to create a microenvironment that will protect seeds from air currents and insulate the seeds to provide uniform germination temperature.
Vermiculite is the mineral Mica, super-heated to expand much like an accordion. This mineral is often used in soil mixes to increase water holding. Many growers use vermiculite in their flats in order to create a microenvironment that will protect seeds from air currents and insulate the seeds to provide uniform germination temperature.
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