Also, don't forget that the plant finishes in different stages as well, i usually harvest each plant in thirds, first the top, as this gets the most sun, then look at the inner buds for prime ripeness, and then take those, usually after a few days or a week, depending on weather and amount of light(outdoor) but, just make sure to inspect each branch and take it only when it is ready, or if there is a frost coming, or terencial rain/wind (outdoor again). to me, this is what growing is about, i can't stop smiling when i am in the bush with handfulls of tight dank sweetness...oh, i'm gonna go have a look see. lata' gata'
~T-Bone