Harvested in 8 weeks? In my experience, brachystachys sown in fall and harvested in winter is pretty weak compared to its spring version. Brachystachys's maximum content is over 1 percent for sure and 3 percent could very well be observed in right conditions and with right strain. I can imagine this.

Yes. Brachystachys is consistent and true to seed but still varies according to season and conditions.

That's 2.3%. Higher than all other Phalaris and all the popular dmt bearing plants.