This is my first grow. I have 10. So if odds are 50/50 5 will be male. I am still learning so here is my question. How far apart should I keep them when I go 12 /12. The way I have my lighting and the space I have them in is going to make it difficult to keep the apart when they lights are on. I do not want a ton of seeds. So what should I do.

There are some early sexing methods that aren't 100% accurate, but might help a little. If all of your seeds were started at the same time, then you might notice som plants are taller than others. Taller ones tend to be male, smaller plants tend to be female. But that's not 100%

Watch your calyx development...Other than that, the best way I can suggest is forced-flowering. You can take a clipping from each plant (make sure you keep track of which comes from which plant) put them in a growing medium (pretty much like taking clones) and put them on 12/12. Force them to flower, and then once they show signs of sex, you'll know which o your plants is male, and which is female.

First pic is preflower female, second is preflower male, third is another side by side shot.

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	preflowerfemale.jpg (41.7 KB, 0 views)
	preflowermale.jpg (19.6 KB, 0 views)
	cannabis_gender.jpg (41.4 KB, 0 views)

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The males need to be totally removed as soon as you know FOR SURE that they are in fact male... I would definately only determine sex by actually male or female flowers... i've grown out seeds and all were different sizes and some tall ones were male, and some tall ones were female...not saying you can't tell, but wikid is right, it's not 100%... I wouldn't keep those males at all, because if one microscopic little piece of pollen gets in there you will have seeds and it might only be 1 but it might be 100 as well... if you're growing for smoke, toss the males, if you're growing for genetics, start another sealed grow box in another room from the females... pollen goes a LONG ways in nature, it will travel in your house too! goodluck! hope the bud if fire!

kill the males, thats what you do. unless you plan on breeding... in which cae, get a few grows under your belt before you start dealing with that, so either way, kill the males, don't mess with it yet. but you won't know until they have been flowering for a couple weeks.

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my eyes always look like so if you dont like it! NOT GREED PEOPLE!

All you have to do is keep the males from flowering.

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Hi,

Im also a newbie grower. So of course this an important topic for me to as I do not want a single seed if possible. Will they start to show signs of sex before the light changes to 12/12? Or does it have to be a 12/12 light cycle before you know?

Also I've heard some (female)sensimilla plants will grow their own male parts and pollenate all by themselves. Im growing Durban Poison outdoors. Does anyone know if Durban has this characteristic?

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All of my posts are made in an effort to obtain information from marijuana growers and users for a college study course. I dont use, possess or grow marijuana.

Yes, what you're talking about is called PREFLOWERS, what I mentioned in my post above. But look, they even have it here in the GrowFAQ

GROWFAQ

complete with pics and everything.

And as far as females pollenating themselves -- that means it's NOT a female, it's a hermie

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I read somewhere I cant remember where now, but it said that a female plant depending on the strain can and will develop a few male flowers at the very end of it's life cycle if pollination isnt brought on by a male plant. And this plant is not a herme, it just a built in mechanism to reproduce no matter what the circumstances. Maybe its rare but if anyone else has heard of this please post. Otherwise I'll dismiss that article as bullshit.

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All of my posts are made in an effort to obtain information from marijuana growers and users for a college study course. I dont use, possess or grow marijuana.

Sorry...but I've never heard anything like that. As far as I know, if it pollenates itself, it's a hermie.

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i havent either.... u just catch'em on time or u dont..

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fuk the police!