yes, very nasty weeds around here too
that's why i have a mate in the local council down here that gives me permission to get rid of them for him
here's a couple of roots i ripped out from a cliff edge, 9 months in my posession.
african boxi 001edited.jpg
hey jon,
here's a close up of the roots...
african boxi 003edited.jpg
i agree with you that something has to be done with the roots, but i think reorganisation will be ok rather than more roots.
thanks for the input, and

i urge you all to use weeds for bonsai
i say this because weeds are weeds if they grow somewhere you dont want them to.
if they are collected from your local area, whatever the weeds may be, they are going to thrive in your area. and you will be doing australia a favour by taking them from where they are not welcome.

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