Originally Posted by The Cannabis Grow Bible
The male plant produces pollen sacks which, when ripe, burst
and scatter pollen to the female plants. The female plant produces
white hairs at the internodes and top cola (head) of the plant during
flowering. These hairs (pistils) begin to curl slightly and grow longer
and thicker. The top cola should carry the most pistils. These pistils
are sticky too touch (do not touch them too much! they also contain
your much wanted THC) and begin to cover in resin over the flowering
period. The reason for the stickiness is that it is used by the female to
catch falling pollen. If the female plant is not pollinated she will try to
grow more sticky areas. Hence the results of a sinsemilla
crop........Bigger and Better Buds!
...
During the peak period of flowering the female pistils on the
flowerâ??s tips will swell up. When the swelling takes place the pistils
will begin to change in color. They will generally change from a white
to an orange tint to a red tint to a brown tint. All strains are different
but in general it is a white to red or a white to brown color change (It
is best to use the breederâ??s recommended flowering times for harvest
guidelines though). When she does this you are ready to harvest her
and sample your favorite herb.