0) Maturity and THC
Although some growers are interested in fiber content, most people
consider the plant to be mature when the percentage of THC found in the
plant reaches its maximum. It is not practical for the average grower to
actually measure THC in a plant, as the chemistry is somewhat complex. In
a growing plant, each successive pair of leaves contains more THC than the
previous pair. The budding tips of the plant contain the most THC of all.
Both male and female plants contain THC. In fact, some research has shown
that in the early stages of growth the males actual ly contain more THC
than the females (Frank and Rosenthal, Marijuana Grower's Guide, p. 66).