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Feminized Cannabis Seeds

How to Grow Marijuana with Feminized Cannabis Seeds

What are Feminized Seeds?

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Spending good money on marijuana seeds, lovingly tending to them and going to great lengths to keep them happy, only to have them produce male plants, can be a heartbreaker. For those who want to stack the odds of getting female plants in their favour, feminized cannabis seeds are widely available on the market and are almost guaranteed to produce female plants. Most feminized seeds will come with a stated success rate, generally somewhere from 95% up to 100%. Feminized seeds are the offspring of pollen from hermaphroditic (hermy) plants.

What are Hermaphroditic Cannabis Plants?

As many unhappy growers know, when cannabis plants become stressed they can become hermaphroditic. This means that a plant will exhibit both male and female characteristics, producing pollen sacs, often at isolated points on the plant, as well as female seed bearing flowers.

The ability to become hermaphroditic is an evolutionary emergency strategy on the part of the cannabis plant. If the plants environment changes, for example if the plant experiences extreme weather conditions like flood or drought, it is genetically programmed to become a hermaphrodite. This allows the cannabis plant to self-pollinate, speeding up the process of seed creation and giving the plant a chance to reproduce before the environment becomes too inhospitable.

Stresses in the grow room can mimic these environmental changes. Things such as too much heat, lack of water, interrupted dark cycle, and others can cause a plant to hermy.

The pollen from hermaphroditic plants, when used to fertilize female plants, is much more likely to produce female offspring. It is the pollen that is feminized in the plant rather than the seeds. This trait has been used by cannabis growers to produce feminized seeds. As technology has advanced over the years, through the process of trial and error, the process has become more and more successful.

How are Feminized Seeds Made?

There are several ways of producing feminized seeds. Some organic growers and many keen home growers still deliberately stress their cannabis plants, causing them to hermy. By collecting the pollen from these plants it is then possible to fertilize a female plant (or many) to create feminized seeds.

Most large scale and commercial operations use chemicals to produce feminized seeds. There are two main chemicals used. Gibberellic acid is generally considered the most effective but colloidal silver is cheaper and more readily available, and consequently more frequently used. There are many internet sites telling you how to make your own colloidal silver.

When the process is carried out, rather than hermy the whole plant, the chemical is applied at points on the plant’s branches, causing stress sites which will then produce male pollen sacs. As with shock methods, the pollen is then collected and used to fertilise other female plants.

Another method of feminizing seeds is known as rodelization. This method relies on the principle that some buds, if left unfertilised and uncut beyond the time that you would normally harvest them, tend to make a last ditch effort to self pollinate by producing tiny male flowers just before they die. Some growers use this process to organically produce feminized seeds. Although this process alone is not as effective or reliable as the chemical methods, some commercial operations have refined the process with a chemical application to make it commercially viable.

How does the grow room environment effect gender?

The grow room environment is also known to effect the ratio of female to male seeds. The ideal environment to encourage the production of seeds that will produce female offspring must be provided throughout the life of the plant and is:

  • more nitrogen (N), less potassium (K);
  • more blue spectrum light and less red spectrum light. Learn all about marijuana lighting.
  • shorter light cycles;
  • a pH of 6.6 to 6.8;
  • lower temperatures and higher humidity;
  • higher soil humidity (non hydro systems);
  • low stress conditions (no sudden temperature or humidity changes, no cloning etc.).

Whatever method is used the feminization process is not perfect and it is impossible to avoid some male plants, as it is impossible to completely avoid having plants turn hermaphroditic. Cloning is by far the easiest and most reliable way to ensure the gender of your cannabis plants. However if you have no access to clones, or no space to keep a mother plant and clone nursery, then feminized seeds may be for you. As with buying all seeds, use a reputable supplier, preferably one that you have had, or know someone who has had, a positive experience with.

Check out our Cannabis Strain Reviews

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Feminized Cannabis Seeds, 7.0 out of 10 based on 1 rating

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From the forum

How to Grow Marijuana Forum - Growing Marijuana Indoors & Hydroponics

57 thoughts on “Feminized Cannabis Seeds

  1. being in the cold area,will plants grow with all the cold air around,i am talking once in a while getting a brush of cold air

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  2. Yo guys, gunna attempt my first grow! So I’m wondering if I buy feminised seeds, can I just use them or do I need males aswell?

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  3. Could someone please upload pictures of male versus female plants. A picture is more vivid than an explanation. Thank you.

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  4. I have a total of 20 seeds in two pots (10 in one, and 10 in the other). I don’t know at this stage which is male or female, but my question is how long do I let them grow before I separate them. They have sprouted and been planted about 2 1/2 weeks.

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  5. Okay, quick question. I know what the difference in males and females are, but A) are the flowers from the males smokeable? B)I’ve seen something that says if you see a male growing, you can clip it off and let the plant continue to grow. Does that mean it will turn into a female or what are they talking about? C) Is the only time to know it’s a male/female for sure during flowering? Thank you and Keep all unnecessary rudeness and ignorance to yourself.

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  6. from my understanding,,, if you use that male to pollinate one of the females,,,,,, you will be the proud owner of around 800-1500, feminized seeds… enjoy

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  7. i got mine from nirvana.com. great prices and from the Netherlands, and they kept it all on the down low. i germinated 10 and all 10 popped, only 1 didnt make it through the transplant, (probably my fault) out of my 9 left of feminized, i may only have 1 possible male, ill know in a week or so….i recommend them highly

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  8. Is there a way to change a male to a female. Also does the hermaphrodite change to male or female once the stress is gone?

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  9. I have two feminized seeds that produced two seedlings each. Is this a bad sign (Bernie’s) or could they both still be females?

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  10. Yes pull hermys out right away and just wash everything down and you’ll be fine unless you want to keep hermys for seeds but why when you can clone its fast and easy
    and as for all the bull on hear I can’t believe all the disrespect on here if someone has a question about a grow come on. No matter how small we all had to start somewhere and the people talking trash are realy the ones who have never even seen a real garden and just quoting shit they read off the web so if you want advice from a real grower ask all you want .
    Keep it burnin PEACE

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  11. hay man, u seem like one of the better people on this site so i thought id ask you some things. ive just brought a complete grow tent kit designed for six plants with a 600w hps bulb. this is my first go so this was the plan, if you could comment/advise me on how good/bad it is that would be grate….here goes.
    so i got the tent set up, filter everything working nice. going for a indica typer, see of green method. i was gonna use soil/peate as medium but hear it effects taste? greminate seeds the in 20 hours of light each day with 4 total dark till plant is 12-18inch then force flower with 12/12 light&dark. leave till the little hairs go dark, slightly longer than most would as its not thc im after so much but rather cbd or whatever its called (stuff that makes u tripp, too stoned to remember lol) and last week before harvest flush with pure water to get rid of all the plant foods.
    as for plant food ive no idea! and do you know anything about these things you can add to help with the flavour? high grade in the uk is a joke….£20 for 1.6g and half the time it aint high grade and its always green and wet where it hasnt been dryed long enough. im sick of it so i wanna grow for myself, top quality, tasty , trippy as hell weed. o, im going for either LSD or white LSD….. any help would be grate! happy smoking!

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  12. damn, for a weed luvvin comunity yall guys are stressin out hard man. give a guy a break and kick back enjoy the buzz and spread the knowledge.
    im new to this to. just got me a complete grow tent kit, everything i need to start growing but i know jack. to me its a adventure and a learning curve but id also like to think if i wanted help more experianced people on would help me out.
    the only real question i wanted to ask is about growing mediums, i was gonna use soil/peate but have seen some say it effects taste, anyother sujestions or perferances? and if youve got nothing constructive to say then say nothing. remember there no such thing as a stupid question only stupid answers

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  13. I got 2 plant from ‘original female garden bush/seed” and put it in the garage at 24hrs light for 2 weeks then 12 hrs light
    after 2 weeks of 12 hrs they started to grow female parts and started looking good then suddenly I realised they are producing little balls i.e turned into a Hermie… they have produced what you call little bananas I tried pulling the balls off… yet sometimes I can see pollen dropping off when I pull some of them if they are too ripe…
    I’m guessing from what I have read I should just pull the Herm plants out??? Also how should I clean the garage? water? what if there is remaining pollen…will it do harm if i try growing again?

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  14. why does everyone hate male plants? where do you think those
    $10 seeds you buy come from, the internet? winter is seed growin time.

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  15. Hay, Just moved to barcelona from the uk. After succesfully growin Indoor back home I wona grow some outdoor on my terrace in this lovely sun.
    As it will take longer to grow will i need to plant it in more soil to supply the roots with more neutrients? Should a 5 gallon container be enough?

    Cheers

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    • i was wondering,i am trying to grow some plants,but i am lost in how to tell the male from feamale .can someone inlighten me

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  16. yo. Chill out! We are all apart of a community that should support each other.
    Ive been a grower/breeder for 13 years now and i find it difficult to understand the attitude some give off to others just for asking a simple question. If people had treated me that way in the begining i never would have had the pleasure of growing True Arcata Trainwreck. Much different than what you see nearly anywhere today. Nor would i have become the grower i am.
    I look to help my fellow growers with nearly anything. Including genetics(which ive collected for over a decade(which i would be much happier to give a person passionate but new to growing than a person whom has grown their whole life and talks down to people just for asking for help. How did u learn without help? Everyone needs help including the best and brightest breeders and growers. So just help them out because if i hadnt been i wouldnt have what i do and wouldnt have been able to help so many people in various ways from design, to genetics to breeding techniques.
    I think this is sad, as a community we must pull together because united we are strong but divided we are nothing. Not tryn to offend anyone just trying to say what i know and feel to be true. Ive been gifted many of the best genetics from friends around the world who believed in my ideas and what if they said what a dumb question? Well for one thing i probley wouldnt have been at the last 3 cannabis cups in amsterdam nor would i have believed in my passion and skill enough to believe i can create the next generation of genetics.
    To all the new growers out there push yourselves and strive for the very best you can do. Start off small dont go into more work than you can handle. A properly run 2000 watt hps flowering room is a great start in fact if u are a true newbi u may want to start with two 600watt hps to start of with less heat to control as it will be cheaper to run, easier to control and u can seal the room to create what we call a “perfect room” or have an intake and exhaust ducting. I prefer sunpulse spinners yet i would recommend magnum xxx with a digital ballast as i got a great deal on my spinners!
    If anyone needs help or has any questions or comments hit me up. Im on TY, Roll it up and Mr. Nice forums under sensisansei. Peace and happy growing.

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  17. what a bunch of assholes you should be helping each other out we need all the weed we can get calling someone a retard dont help any your stems are purple cause your plant is streesed and your weed tastes like dirt cause your growing in dirt you can add some sweet or bud candy to help or grow on a table flood and drain taste will be much better

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  18. I bought a bunch of feminized seeds but one is a total male. Do you think if I use it to pollinate some of my best females the new seeds will be all female?

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  19. I think it’s the other way around! Males= tall and stringy, Females= short & bushy(unless it’s sativa dominate)

    The reason males grow taller & faster is so they can spread their pollen OVER the females to reproduce.
    Does this make sense to you?

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  20. My experience has been very successful growing outdoors.

    1 plant per hole. Never had a male, unless I planted more than one plant. I also stress the shit out of ‘em. 8-10 holes per year. No holes within a mile of each other.

    Also, if you can find an old cow pen or an old barn site that has not been used for awhile, you will get some fabulous plants with very low maintenance. I live in an area where you will get jail time if you get caught. So, I have to break alot of rules.

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  21. males usually have what looks like to be a little balls of pollen near where the upper sprouts begin

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  22. Kiddies READ this web-site….It contains ALL you need to know-There is no such thing as a stupid question only STUPID answers.43 years growin..still goin…!

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  23. good god its like being back at school,its like my mum always used to say if you have nothing nice to say then say nothing.get one together and chill out

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  24. TOM got it WRONG…maybe HE should read the articles on this site before he opens his big mouth…
    The males grow taller, the females are shorter, and they BOTH produce the leaves. Please don’t ridicule people for asking simple questions…questions aren’t dumb, it just means people want to learn.

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  25. doe this mean that when u leave your female plant longer than the recomended harvest time and it produces seeds willl those seeds be female?

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  26. ? When chosing a mother cloner it will start to flower to determin sex how do you keep it in a veg state
    ? 2 can i clone auto flowering strans

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  27. i live in the usa i was wondering if anyone ordered seeds online if so whats a good safe site . where i dont have to worry bout the police

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  28. well I hope that i don’t offend anyone (you know you can’t please them all). I am a first time grower (just for me) i am legaly blind but i can tell my [lants are healthy but i will have trouble spotting male plants, is there any truth that the male p[lants are sharter.
    1 of my 5 babies is definatley short

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  29. Miketheaxekiller

    jake the snake your a dick they just said not to be a dick up above and you say that but anyways maybe the guy just has shit weed, nipper you know smells good looks good but taste like shit and doesn’t get you high

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  30. What makes my weed taste like dirt when flushed properly 2 wis b4 harvesting.
    Everything else seemed great. Great smell looked great but taste like dirt. Sorry so the stupied question but I looked other places and I’m not finding an answer. Can some one help me please. Were to go to look for info on what I cud be doing wrong. Sorry to bother wud really appreciate the help tho thanx

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  31. You can call them “balls” if you want … after all it is a male plant. However, I think they look more like minature bananas. The flower they produce is not the flower we are looking for.

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  32. This is also my first time on this site and just from reading this guide I’ve picked up some priceless information. It appears muskie1 hasn’t read the guide but I gotta agree, that’s no reason to give him grief. Hey muskie1, if you are reading this then I highly recommend reading all the info on this site. It’s top notch.

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  33. Christine Frank

    Seriously. I agree with the guy above. Jesus. Obviously, he wanted help. If he didnt read it, oh well. Just answer the damn question and let it go. God, people are so ignorant.

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  34. WHY DOES EVERY ONE HAVE TO HATE ON THE GUY THAT ASKED A SIMPLE QUESTION?(sorry about the caps lol) he was asking a simple question. and even if thhe question was already answered in another article maybe this is his first time to this site and did not know…come on every one this site is here to provide every one with the wonderful information on how to grow this magnificent plant lets not start stuff over a simple question. either answer it or tell the person were they may find the answer.

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  35. Hello. You will know a male plant from a female plant by looking at the plant when it starts to flower..right underneath the leaves on the stalk you will look for little “balls” or “sacks of balls” if you see those then its a male plant and you want to remove it immediately. You do NOT want to grow a male plant. If you see however, things that look like little hairs sprouting outwards then its a female plant and you want to grow it. A herme will have both and you dont want to grow that either. FEMALE PLANTS ARE THE ONES WE WANT TO GROW.

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  36. Hey muskie1, why don’t you go read this article these good people have put together that contains more information than you would need. Maybe then you won’t need to ask questions that has already been answered.

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  37. if you dont know you shouldnt b on this site. Females grow taller and bud while males grow shorter and produce the leaves that everyone knows the pot leaf to look like. You want thw females if u want the good weed.

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