I agree with Lip..I don't wait for pre-flowers...time wasted in my book....my plants have always shown sex between the 10-14th day of switching to 12/12 regardless of when I turn them.
Weedhound Reviewed by Weedhound on . Time of sexing plant ???? We now have had our plants under 12 / 12 for 7 days and still do not see signs of possible sex and was wondering how long it can take to tell sex of our plants??? Jamie Rating: 5