How (& Why)to Use Silica On Houseplants
For example, sand and perlite are made of silicon, but it has no bioavailability to the plant, so the plant can't reap the benefits. ... Silica is beneficial in a number of ways, but basically, adding silica to your plants makes them stronger. Silica: Strengthens cell walls; Supports stronger defences, and builds resistance to pests;
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