Hello ๐
Cannabis flowering starts๐ฑ when the light cycle goes in at 12 o'clock in the night and 12 hours in the light. For an outdoor cannabis crop, in Europe, the flowering of cannabis begins at the end of July / beginning of August. After about ten days, the first pistil should appear: This is the sign that your cannabis plant is female. If you opt for feminized cannabis seeds the problem does not arise.
The flowering time of cannabis depends on the variety you grow. An Indica will bloom faster than a Sativa. Indica flowers in 60 days. Sativa cannabis often needs 80 days. When you start flowering, the plant will enter the Stretch phase. Cannabis is preparing for flowering, will stretch these knots and double or triple its size. This stretching period is of paramount importance as it will determine the size and final structure of your plant.
May the force be with you ๐ช