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Roots need air to breathe.
Roots need air to breathe.
Perlite is a light non-toxic substrate ideal for propagation. It maintains its shape, lets roots move easily and provides excellent support for cuttings.
Planty People can access further information about Perlite including our downloadable Pottering Pack Go To Guides. Subscribe to The Plant Paper to get access to subscriber only content on our website. If you're already a subscriber, access the Planty People main menu here.
What is it?
What is it?
Perlite is made from mined volcanic glass. The rapid cooling of lava makes the water inside vaporise, creating a popcorn like compound.
It is very light, non-toxic and retains water.
It allows air flow between particles, letting roots get more oxygen, move and grow easily.
More Information
More Information
For more of the science behind substrates, refer to our Plant Science page.
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