How the hell do I get a male plant from TGA!?!?!?!

gagekko said:

I get a 50/50 ratio... You're just unlucky I guess

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What temps do you germinate your seeds under??

If you want to try to force a male, given all the testing that's been done by many.. which is still semi-questionable to me.. you can try lower N, higher P, lower humidity, higher temperature, and more red than blue light. (That's the opposite of what they say is a good way to force females, and is touched on in this thread here if you're curious and believe any of it may work for cannabis as opposed to other plants) Do also keep in mind that the thread is 6-ish years old. https://www.rollitup.org/general-marijuana-growing/9761-higher-female-ratio-again.html

I do this ..if I really need a male I keep where I'm germinating at 78-85 degrees ..works 90% of the time..and when you sex or preflower him if he shows resin production and smells pungent...that be him ..and no nanners ...that's not the way to go..when you grow a large outdoor it's always 70% female to 30% male ratio..

But...just ran 2 AOS and 2 FLAVs from TGA did one seed of each above 80 and all are female..so good luck bro

ive had fem seeds turn out male. i contacted the supplier pissed wanting a explanation. long story short, they told me its not common but it does happen, sorry bud. sadly that was it, just thought id throw that into the mix.

I appreciate this doesn't help your issue, but as someone who's only grown fem seeds before and likes the idea of growing out a few 'Jilly Bean' - the high rates of fems interests me greatly.

This got buried on the first page:


There is a company that claims to be able to determine the sex of a cannabis plant 7 days after germination.
Since they can determine sex 7 days after germination, that would lead me to believe that the environment has nothing to do with sex determination in cannabis seeds.

If you test a 7 day old plant and find it to be male, giving it a certain environment is not going to make it female.
The same is true for a 7 day old female plant. (You could stress it so it produces male flowers, but that does not make it male or a hermaphrodite.

3.) Polymerase Chain Reaction PCR and Gel electrophoresis are biotechnology tools for genetic analysis. Montana Biotech has created a PCR based test for determining cannabis marijuana seedlings sex 1 week after seed germination! Cannabis sex is determined by X, Y chromosomes, kinda like humans. This test allows a technician to test for the presence of female or maleness in marijuana seedlings before even the most seasoned cultivator can tell!

http://montanabiotech.com/category/best-method-for-sex-determination-of-cannabis/

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mushead said:

ive had fem seeds turn out male. i contacted the supplier pissed wanting a explanation. long story short, they told me its not common but it does happen, sorry bud. sadly that was it, just thought id throw that into the mix.

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Then you were either sent regular seeds or the seeds were not made properly. Properly made feminized seeds can not be male, they lack the genetic material to be male.

I gotta agree that I believe based off my own research that the sex determination has to be at the conception of the seed. I think the idea that we are altering the outcome with temps is a joke. There are billions upon billions of cannabis seeds out there, and I bet the more you germinate the closer you will get to a 50/50 ratio when its all said and done. Some times you get 15 females like the OP said he did, sometimes you get all males like I did with a pack of super skunk a few months ago. 3/5 germinated all were males when they flowered. I germed 5 of another seed type I had, all 5 came up 2 were males, it all depends on which seeds got put into the bag.

Thundercat said:

I gotta agree that I believe based off my own research that the sex determination has to be at the conception of the seed. I think the idea that we are altering the outcome with temps is a joke. There are billions upon billions of cannabis seeds out there, and I bet the more you germinate the closer you will get to a 50/50 ratio when its all said and done. Some times you get 15 females like the OP said he did, sometimes you get all males like I did with a pack of super skunk a few months ago. 3/5 germinated all were males when they flowered. I germed 5 of another seed type I had, all 5 came up 2 were males, it all depends on which seeds got put into the bag.

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So why have I heard from TGA crew members themselves that they get a better female to male ratio at lower germination tips?? This isn't coming from a member of RIU, or a single experiment, these people breed cannabis for a living. They provide some of the best genetics on the planet.

I don't think it is a coincidence I've gotten 15/15 females, out of 3 different 5 pack, 3 different strains (Deep Purple, Chernobly, and Plushberry).

Best believe I will be germinating my next order at 85 degrees, and documenting the results...

Returning to posting after a long hiatus on another board; I'm accustomed to the occasional hermie in my environment so seeding and males are not the roadblock and disappointment that others perceive. Natural stress can cause them and the seeds that come from their crosses, in my opinion, aren't any more likely than any other to reproduce a ladyboy. If cloning isn't within your comfort range, then just let nature take it's course and you will see some seeds whether you like it or not.

Trousers said:

This got buried on the first page:


There is a company that claims to be able to determine the sex of a cannabis plant 7 days after germination.
Since they can determine sex 7 days after germination, that would lead me to believe that the environment has nothing to do with sex determination in cannabis seeds.

If you test a 7 day old plant and find it to be male, giving it a certain environment is not going to make it female.
The same is true for a 7 day old female plant. (You could stress it so it produces male flowers, but that does not make it male or a hermaphrodite.









Then you were either sent regular seeds or the seeds were not made properly. Properly made feminized seeds can not be male, they lack the genetic material to be male.

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So tell me this....Why do they have to wait 7 days after germination to determine the sex? Why can't they determine it in the seed?

Let me tell you why...Because sex isn't predetermined! And you have just offered me my most valid argument with your own evidence.

Saying "Aha! They CAN tell the sex after the plant is 7 days old"

Well, tell me this....What happened during those first 7 days??? A PROCESS CALLED GERMINATION, WHICH IS THE VERY FACTOR I'VE ATTRIBUTED TO SEXUAL DETERMINATION. Thank you for making my argument even more solid, with an actual credible source to back it up this time.

I just woke up a few minutes ago and I am not reading all the crap above me or getting into some stupid argument with people who [likely] don't know the first thing about biology (other than what they were taught in high school)...(if they paid any attention).

Beyond this it just irks me the way people think everything has everything to do with genetics. Genetics are just as important as environmental conditions when it comes to most aspects of plant growth. Ever hear of epigenetics? Sex determination in dioecious plant species is not even entirely understood, and only a handful of species have been studied thoroughly.

Check this one out: http://www.plantcell.org/content/16/suppl_1/S61.full

Even breeders acknowledge that negative environmental factors might lead to a poor female ratio: http://www.mandalaseeds.com/FAQ#IN5

Nullis said:

I just woke up a few minutes ago and I am not reading all the crap above me or getting into some stupid argument with people who [likely] don't know the first thing about biology (other than what they were taught in high school)...(if they paid any attention).

Beyond this it just irks me the way people think everything has everything to do with genetics. Genetics are just as important as environmental conditions when it comes to most aspects of plant growth. Ever hear of epigenetics? Sex determination in dioecious plant species is not even entirely understood, and only a handful of species have been studied thoroughly.



Check this one out: http://www.plantcell.org/content/16/suppl_1/S61.full

Even breeders acknowledge that negative environmental factors might lead to a poor female ratio: http://www.mandalaseeds.com/FAQ#IN5

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You basically just repeated everything I've already stated, while saying I likely don't understand what I stated. I think I understand biology, as well as plant genetics, on a good enough level to discuss it competently. I'm at least taking the time to study facts from reputable sources, and in 2 years will have completed and Undergraduate degree (B.S.) in Agronomy & Soils with an emphasis in Plant Genetics.

I've stated multiple times in this forum that the sex determination for most dioecious plants is barely understood, and then have proceeded to have people claim that it is indisputably determined and the conception of the seed, with no evidence to back it up.

I also don't think you should disenfranchise other people's knowledge or opinions before at least closely examining them.

bamacheese said:

So tell me this....Why do they have to wait 7 days after germination to determine the sex? Why can't they determine it in the seed?

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Perhaps you should ask them. It may be sooner, but they do not want people damaging seedlings. I do not know.

bamacheese said:

Let me tell you why...Because sex isn't predetermined! And you have just offered me my most valid argument with your own evidence.

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That does not make any sense. If a plant is female at 7 days, it can not be male, ever. No matter what you do to the environment, it can't be male, it lacks a Y chromosome.

Your theory that you can affect sex after germination makes no sense if you can differentiate sex so soon.

bamacheese said:

Saying "Aha! They CAN tell the sex after the plant is 7 days old"

Well, tell me this....What happened during those first 7 days???

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The male or female plant grew.

bamacheese said:

A PROCESS CALLED GERMINATION, WHICH IS THE VERY FACTOR I'VE ATTRIBUTED TO SEXUAL DETERMINATION.

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Why so mad?
You should try decaf, maybe smoke some marijauna.

I have still not been offered anything solid to back up the idea that environment affects the sex of a seed.

bamacheese said:

Thank you for making my argument even more solid, with an actual credible source to back it up this time.

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The credible source you want to back up your idea also believes that sex is predetermined in cannabis.


Messing with germination would not affect a feminized seed. I have no reason to believe that it would in a regular seed.

bamacheese said:

You basically just repeated everything I've already stated, while saying I likely don't understand what I stated. I think I understand biology, as well as plant genetics, on a good enough level to discuss it competently. I'm at least taking the time to study facts from reputable sources, and in 2 years will have completed and Undergraduate degree (B.A.) in Agronomy & Soils with an emphasis in Plant Genetics.

I've stated multiple times in this forum that the sex determination for most dioecious plants is barely understood, and then have proceeded to have people claim that it is indisputably determined and the conception of the seed, with no evidence to back it up.

I also don't think you should disenfranchise other people's knowledge or opinions before at least closely examining them.

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I am just looking logically at the evidence. Neither of us can prove we are right, but there is much more credible evidence to back up my opinion. PCR based method of checking dna is real science, not some stoners messing with temperature and not having a control group.

Thing is, if you raise the temp and get a male, that does not prove anything. It is just another story.
Just the fact that feminized seeds exist are enough proof for me.

bamacheese said:

You basically just repeated everything I've already stated, while saying I likely don't understand what I stated. I think I understand biology, as well as plant genetics, on a good enough level to discuss it competently. I'm at least taking the time to study facts from reputable sources, and in 2 years will have completed and Undergraduate degree (B.A.) in Agronomy & Soils with an emphasis in Plant Genetics.

I've stated multiple times in this forum that the sex determination for most dioecious plants is barely understood, and then have proceeded to have people claim that it is indisputably determined and the conception of the seed, with no evidence to back it up.

I also don't think you should disenfranchise other people's knowledge or opinions before at least closely examining them.

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Oh, I am sorry, my 'liking one' of your posts and essentially siding with your POV (except providing some empirical evidence for it) wasn't good enough, for you? Didn't give you the notion that maybe those 'people' I was talking about didn't include you?

I'll make sure I am real fucking specific next time, choose my words and qualifications carefully and so fourth, lest I offend somebody on the internet.

Nullis said:

Oh, I am sorry, my 'liking one' of your posts and essentially siding with your POV (except providing some empirical evidence for it) wasn't good enough, for you? Didn't give you the notion that maybe those 'people' I was talking about didn't include you?

I'll make sure I am real fucking specific next time, choose my words and qualifications carefully and so fourth, lest I offend somebody on the internet.

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Jesus, my bad.

I made the false assumption because I had specifically mentioned understanding biology on a high school level. That's where the inference was drawn from.

Haha. It's okay I was just being hard on you.