Perlite is ground and highly heated volcanic rock that improves soil structure, making it more airy and allowing for better drainage. Plagron's RHP-certified perlite impresses with its consistently high quality, is germ-free, and guarantees an optimal water-to-air ratio in the soil. Mix approximately 10-35% perlite into your soil. You can also use Plagron perlite as a hydroponic substrate or as a rooting area in a propagator for cuttings.
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