Questions tagged [perlite]

For questions about the usage of Perlite, a volcanic soil additive that increases water drainage, aerates, and loosens up the soil.

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Vermiculate has a bad history of being tainted with asbestos; what about perlite?

I avoid vermiculite because of its horrible history of being tainted with asbestos. Wikipedia states that, nowadays, vermiculite is supposed to be tested for asbestos, but knowing a bit about testing ...
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A good substitute for perlite to be used in potted plants soil mix?

I would really like to make a soil mix with some perlite, so it becomes really light and has good drainage and won't hold up too much water. This is to use on potted plants. But I couldn't find any ...
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Perlite and Vermiculite sustainability

Are perlite and vermiculite sustainable? For potting mixes, I have to use quantities of perlite and vermiculite. But I am concerned about their sustainability, and how they are obtained.