Perlite, a light granular material, is white in colour. Although it looks and feels similar to small pieces of polystyrene, it is made from expanded volcanic glass heated to 1000°C. It then ‘pops’ (like popcorn), to many times its original size. It is lightweight, sterile and easy to use. It is neither acidic nor alkaline. … Perlite In Compost For Best Gardening Results Read More »

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