Perlite is an amorphous volcanic glass that has a relatively high water content, which is regarded as one of the finest seedling growing mediums. Typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently making it the gardeners friend throughout the entire growing process.
Additional information
Weight | 1 kg |
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Dimensions | 35 × 23 × 12 cm |
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