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Vermiculite is a magnesium-aluminum-iron silicate with a high capacity for holding both water and nutrients. It's extremely light, and looks similar to mica, consisting of stacked layers.
Vermiculite is a magnesium-aluminum-iron silicate with a high capacity for holding both water and nutrients. It's extremely light, and looks similar to mica, consisting of stacked layers.
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+It is often used in potting soil for plants that don't mind a fair amount of water because it can retain water and nutrients.