Vermiculite

Vermiculite is heat expanded mica. It is often used as a starting medium for seeds and cuttings. Sometimes referred to as a soilless medium, a feature that makes it free of disease, vermiculite has no nutritional value, so some sort of liquid fertilizer should be used when propagating plants with using this method.

As a additive to potting soil, vermiculite helps create a friable, light, mixture that holds moisture.

This is a glossary entry that will help you understand some of my blogs better. Plants have a vocabulary; most specialized areas of learning do. Pick up one new term a day, and in no time you'll be a pro.