I love mimosas and enjoy a good part of my free time riding around nature where they live.
A few times in a year the mimosa invades some roads and it's taken off by the root to clear the roadsides, that's the regular and sustainable way I found to take some root bark for my spiritual practices.
Here are some pictures to show the root aspects of M. tenuiflora (1), M. arenosa (2) and M. ophthalmocentra (3).
I see only the M. tenuiflora with the dual root bark, like inner and outer, the others are more compact coat.
I'm also aware that non-sustainable ways to explore mimosas are most commom, sadly.
That's why I enjoy to see the seeds spreading at sharetheseeds, so anyone can grow the mimosas and get self sufficient, at the long term.
The method of propagation by air layering provides a great biomass of roots (4), that instead of transplanted, could be harmlessly harvested.
I know dmt is everywhere and there are amazing other plants available, but if you want to go with mimosas, give a try on cultivation and air layering.
It grows nicely, in about a year the plant is strong enough to start the layering, that can go on for life.

Thanks for posting iracema, I never considered air layering for Mimosas.

Is DMT extraction and use very common in Brazil or is it specialist field of knowledge ?

Extraction is not very common, I see more brewing and group gatherings once or twice a month.
But here and there I meet sole dmt appreciators in changa form.
In my region I try to bring back to the remaining juremeiros, the Potiguaras, their old spiritual practices, with jurema brew, yopo snuff and tobacco fumes.
The few times we had encounters with them it was very intense and they always remember of their old parents and folks being persecuted for that practices.

i need to get one this. My mimosa tree hit like 8 feet this year, was hitting the ceiling(indoor) and I had to cut it back..its growing out all fast but mostly top growth and I have been unsure what to do..prune it way down or take a cutting or what...I can try this.

That would be nice jamie, you can start air layering first the tops and take new cuttings when they root. Then after this elaborate prune, it's moment for trunk layering, the plant will spend energy growing new roots and slow down growing up.

This is such an awesome idea! Thank you so much for sharing!

Thank you for sharing

Any tips or notes for the future Mimosa air layering people?
Do the trees need to be a certain size or age for root harvesting?

Hi iracema, I'm looking into growing some mimosa's myself, just got some seeds. Could you elaborate on what you are doing for the air layering?

I just watched a youtube clip on how to air layer a rose bush. There they were creating a 'wound' on a section of stem by peeling back the outerbark, then applying some growth hormone powder of some kind, wrapping this with some damp moss and then wrapping the whole thing in plastic wrap and tying it off. Does that sound about right? Is the hormone powder necessary?

Do the new roots from layering develop enough to offer a decent yield of dmt ? The roots in the pictures you posted look a bit thin. Most mimosa bark I've seen has come from very well developed roots.

That sounds about right, intosamadhi. That tree from the picture with layering roots is not mimosa, just a random example of the method.
For a trunk or branch about the diameter of a finger I guess it's ok to make the layering set, Cosmic Spore, if you give some support for the extra weight.
As mimosas are bushes, one can make multiple layering points and see the roots developing, a long-term cultivation like cacti.

Jamie I'm super unto a cutting if you would be into it...