Wow... looks like your a newbie of a newbie; plants start to show sex if you veg for about 7 weeks which causes the plant to mature and show sex by itself but if you want it to show sex before that then you have to induce it to a 12/12 light cycle with lights within the 2700k spectrum at least after 3 weeks of vegging (growing under conditions more than 12 hours of light per day i.e. 20/4)
Although you are not completely incorrect, the question is being posed by a new gardener...obviously detectable by the question.
Instead of being condescending to other people you should try to be more helpful by keeping it simple.
Original Poster,
Here is some good info with a citation:
http://www.marijuanagrowershq.com/sexing-cannabis-plants/
[h=3]Early Visual Detection[/h]Sexing cannabis plants is more difficult while they are still fully in the vegetative growth phase, but it’s not impossible. Often a solitary flower will appear two to four nodes down from the top of the plant. These are usually very small and can be difficult to identify without
magnification. The drawback to this method is that males usually show before females and growers often misidentify and cull out females accidentally.
[h=3]Light Cycle Manipulation[/h]Cannabis plants at any stage of vegetative growth can be forced to show their sex through light manipulation. By exposing your plants to a long night light cycle of 12 on 12 off for about a week, the plants will quickly reveal their sex. After a week the light cycle should be returned to 18:6 or for outdoor, back to natural light so the plants will return to vegetative growth. This method is failsafe, but does have a drawback. Indica dominant plants don’t always want to return to the vegetative phase and can produce some bizarre and unwanted growth or go into full bloom. This method is very easy in grow rooms but requires covering the plants or bringing them in if they are outside.
[h=3]Clone and Sex[/h]A great method for determining plant sex is to root cuttings from each plants and then sex the cuttings. This allows you to know the sex of each plant in as little as two weeks, without manipulating the light of the plant itself. Simply take a cutting or two from each plant you intend to sex and carefully label the cuttings and the plant they came from. Once the cuttings have rooted, you can switch the light down to 12:12 and force the clones into flowering. Once you have identified the sex of the clone, you will know the sex of the mother or father it was taken from. You can then discard the male plants and replace them with the younger female clones at a 18:6 light cycle. This method does require careful labeling and can be more difficult with large numbers of plants. It also requires that you are at least somewhat proficient at cloning.
I suspect that you could drop the light cycle to 12:12 as soon as the cutting are taken and may be able to identify the sex before they even grow roots. I’ve never tried this but would love to hear if anyone has.
So i uploaded these to get some advice, i was also wondering how to tell if they are going to be male or females. Or is it to early in the game? If so how will i be able to tell the difference. Btw they are only about a week old as im sure most of you guys can already tell.
so here they are again but they are only 12 or 12 days old. they are looking pretty good i thought. I just want to hear what you guys think again. Oh btw the first 2 are pics of the same plant. I took two pictures to enfasize the purple on the root. I wanted to ask why its purple. Ive been told it can be two things. It can mean its going to be some good bud or its lacking something in its nutrients. well just let me know what you guys think. Thanks much appreciated.
