I don't remember exactly where I read it, but back when I was first learning about DMT and plant sources I stumbled upon P. Brachystachys and was thinking about growing it.
The paper/study that I read said that most of the alkaloid content is produced shortly after germination (within the first few days; maybe in the first weeks, but I think it was more in the day range).
I will continue searching for source of this info, but I remember it coming to the conclusion that this grass only produces alkaloids very early on in its life cycle, then it stops production or slows it down.
**Update:
I found one study about Phalaris Aquatica that says pretty much the same thing,
http://www.ncbi.nlm.nih....d/16666301?dopt=Abstract .
There is another one out there specifically about Brachystachys though, so I will continue my search.
“Surrender is inner acceptance of what is without any reservations. If you have lived long enough, you will know that things “go wrong” quite often. It is precisely at those times that surrender needs to be practiced if you want to eliminate pain and sorrow from your life.”
Eckhart Tolle