Pre-flowering 

After about 4-6 weeks, the cannabis plants already show in advance which sex they have. This is called the so-called pre-bloom. Directly at the leaf base of the stem form small florets with threads, if it is a female plant. The pre-bloom regresses after a few days and is not yet the actual bloom. It gives experienced growers the opportunity to determine the sex of the plant within a few days before the actual flowering phase. From this point on, the plant is sexually mature.

However, for people with less good eyes or only limited time, it is recommended anyway to use feminized seeds. This eliminates the need to search for the sex and sort out the males in time, because there are only female plants .

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