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Because the nutrients taken up by plants are largely cations, we add vermiculite both to break up the soil, decrease density, and provide a ‘magnet’ for these nutrients (either in your watering solution or as broken-down particles from a rich soil). Vermiculite’s high CEC holds these nutrients in place until the plant uses them.
Based on 2 reviews
I always incorporate vermiculite into my soil mixture to chunk it up, it allows air flow around the roots and helps in having good draining soil
I find that I'm water my plants much less these days since I have applied vermiculite to the soil.