The recent Joanna Lumley programme about Japan visited a volcanic island
in the extreme south where the world's largest radishes are grown. I
can't figure out why a pumice rich soil would be any different to
vermiculite or perlite, all 3 having the same properties of air and
moisture entrainment. No mention of nutrients, but there must be some in
volcanic soil? Puzzled...again.
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus