The glaze may be an issue, but I'll leave that to someone who know chemistry and science a bit better. I just know that at a repotting clinic years ago, the head of the orchid greenhouse at MO Botanical Gardens warned me to never plant directly in the glazed pots for various reasons, and that after having some in there for only a year several died and the rest were so root bound I thought I'd have to break the pots. All of which were things we warned me about. She said we only use them as decoration for plastic or clay pots to be slipped inside, for air flow, humidity increase and balance.
Of course, what works for one doesn't always translate to someone else though.
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