Vermiculite is one of the world's most unique minerals. Scientifically it is composed of hydrated Magnesium Aluminium Silicate, it has characteristics of lightweight, inorganic (incombustible), compressible, highly absorbent and non-reactive. Vermiculite (Wikipedia) is used in thousands of applications, and is ideal for seed covering & mixing with compost, soil and hydroponic mediums. We highly recommend mixing at a 50 - 50 ratio with Perlite for Autopot systems. At a 30 - 70 ratio (vermiculite - perlite) it creates a media that is more water-absorbent than perlite and will allow you to water less.
Ausperl Vermiculite characteristics
- Light weight
- Disease free, no weeds or insects
- Provides excellent aeration
- Insulating to increase water retention and lower root zone temperatures
- High water holding capacity
- Inorganic and non abrasive
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