What benefit is there to adding LECA to a bark mix?
For those who don't know what LECA means, it is an acronym for Lightweight Expanded Clay Aggregate. It was initially developed as a concrete additive to improve concrete's abysmal insulation value. LECA is inert, pH neutral, and due to its moisture wicking capability and gas permeability it has been adopted for use with orchids.
Okay, the question. I've noticed the some commercial greenhouses mix LECA into their potting media. In this thread I'm asking "why?".
-Keith
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Last edited by K-Sci; 09-19-2021 at 02:26 PM..
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