I've been wondering if there is any evidence of a preferred medium for growing mexi-pings? I have heard a lot of anecdotes about 100% mineral vs organic substrates but nothing that suggests a real/factual preference by the plants themselves.
I've never been to the mountains of Mexico, but I imagine that most of these plants are growing in some kind of leaf mould instead of a true soil. If that is the case, would ground, sterilized oak leaves be the best medium of all??
I'd love to hear the experiances of Ping lovers.