For CBD, as trichome just turn yellow wold be a good time. There is would be no practical improvement on yield. On quality, I could not notice the differences between very yellow trichome or just starting yellow. CBD put me to sleep all the same.
But please note that I donโt get the giggles from my high. Smoking the same joint, my friends go silly After a few puffs.
Took three joints for me to be in the mood. But then, I generally still just chilling.
And My CBD plants seemed that they coupled go on forever even after harvested. Flowers are just there and donโt develop further.
I finally pulled them at 10 months.