Square Foot Gardening Forum
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Vermiculite inert?

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Vermiculite inert?

Post  Pollinator on 1/20/2013, 9:46 pm

Is vermiculite in a soil mix completely inert, or does it provide any minerals or trace minerals?

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Re: Vermiculite inert?

Post  camprn on 1/20/2013, 10:55 pm

Vermiculite itself is inert. I am not a chemist but I believe that it aids in cation exchange and helps free up certain minerals that can then be absorbed by plant roots. Also allows for tilth and aeration of the growing mix.


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Re: Vermiculite inert?

Post  JackieB999 on 1/21/2013, 2:43 pm

I believe Mel also says in the book that it holds moisture.

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Re: Vermiculite inert?

Post  plantoid on 1/21/2013, 7:48 pm

Expanded vermiculite chips such as we use are inert to all intents and purposes .
look in the vermiculite threads in the main menu's there are several links to manufacturers data and also I think there is a Wikki reference for it as well .

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