resimaxanswered grow question a year ago It's really hard for anyone to tell if it is ready without a close look at the trichomes under magnification, like a jeweler's loupe. Additionally, every grower has a different preference on the cannabinoid metabolization level. My advice would be to look at the trichomes on the inflorescence, not the leaves, and judging by their color and the effects you are after, that should tell you the exact day to harvest them.