Lava Rock as Perlite Substitute in Peat Mixes

Scoria/Cinder Works Fine for Aeration

A grower asked if 5/16-inch lava rock could replace perlite in peat mixes for Drosera, Sarracenia, and Venus flytraps.

Lava rock (scoria/cinder) is inert and adds good air space. Just ensure it’s not limestone or other reactive rock.

Good Growing!
Jeff Dallas
Sarracenia Northwest
https://www.cobraplant.com

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