Vermiculite for growing mixes: moisture and nutrient retention
Gardening Guides

Vermiculite for growing mixes: moisture and nutrient retention

What vermiculite contributes

Vermiculite is a mineral expanded by heating. It increases water retention in a mix and also holds nutrients. UNH Extension describes these properties in its potting-mix overview.

Vermiculite and perlite

Vermiculite is used for moisture and nutrient retention, while perlite is commonly used to improve drainage and aeration. These roles help explain the ingredients; they do not make either material a universal choice for every plant. See UNH Extension's comparison of potting-mix components.

Choose for the intended use

Review the plant's needs and the complete mix before deciding how much to use. Container mixes vary with the plants they support, as explained by Illinois Extension. Follow a suitable plant-specific recipe and the supplier's product and handling instructions; this guide does not prescribe a fixed percentage.

Choose a pack and keep reading

View IronRoots Vermiculite for current pack options, price and availability. Compare Perlite, read the growing-mix ingredient guide, or browse Soil & nutrition.

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