----- Original Message -----
From: "Ben Griffin"
Someone recently mentioned to me that they use
diatomaceous earth in their mix. I read a bit about
it and it is supposed to deter bugs in the soil. Is
it dangerous or beneficial to the root system?
Ben
---------------

Provided that I'm correct in assuming that DE is not granular, it is far too
small to be used as bonsai soil. If the grains are smaller than 1/8" (3mm),
it's not at all beneficial. The kinds of pests that DE can help to deter
are not generally a problem with bonsai. BTW, DE only works when it's dry.

Kind regards,
Andy Rutledge
zone 8, Texas

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