A plant will usually show it's sex in five weeks under 18/6. You might want to invest in a magnifing glass to see the preflowers cause they are small. Males will have a little ball like object on the lower stem that looks like a spade on a playing card. They will be sticking straight out from the stem under each leaf; just like a jackass with a hardon.
Gardenking Reviewed by Gardenking on . How soon can you tell sex I have 8 little babies about 4 weeks old and on its 7th noid how much longer before telling sex.Thanks for any info. :D Rating: 5