you don't harvest regarding the pistil color, you harvest regarding the color of the 'trichomes' ... there is an explanation and photo example in the FAQ section, titled "When to Harvest" ... its a 'sticky' by Zandor ... on my particular strain, the pistils turn dark brown long before the trichomes are ready ... if I had harvested them according to the pistils, I would have had less potent product ... :smokin: