For outdoor growers: Your ultimate goal is to harvest during the THC peak because if you harvest too early, then you wont get the full benefits of your labor. The best time to harvest is during a full moon cycle, early morning at dawn about 5:30am. There will be a full harvest moon on October 5, 2009 @ 5:30am, which will alert everyone to harvest your MJ plants, if they are matured enough. Look up to the heavens Sunday evening and if you see a bright orange moon, it will be a good signs to cut and begin curing your harvest this Monday morning (before dawn) .Farmers always harvest on a full moon cycle, and there is a reason for that! If your crops are outdoors, harvest them at the same time your local farmer harvest his final harvest cycle. I would suggest harvesting the morning after there is a harvest full moon in the night sky mid October (when the moon is orange/red). Just how the full moon has many chemical effects to human hormones, it also has chemical effects to plants in similar ways, like THC peaks. And just like humans, plants have more energy during the morning hours rather then when they have in the afternoon. Never harvest while photosynthesis is taking place because all of the hormones are converted down into the roots.