There are two main methods to create your own feminized cannabis seeds: the colloidal silver spray method or using rodelization. Tiresias Mist Feminized Seed Spray?? Any DGC use this? So, I came across this spray on Youtube watching a guy claim he never has to buy seeds again and for me being an autoflower grower I was
How to make your own feminized seeds using Colloidal Silver or Rodelization
There are two main methods to create feminized cannabis seeds:
- colloidal silver method or
- rodelization (sometimes spelled “rhodelization” or “rodilization”)
Both the colloidal silver method and the rodelization method are described in detail below if you scroll down. Rodelization is a more “natural” way to get seeds, while colloidal silver gives you more control of the feminization process. Each of the methods has its pros and cons.
For whatever reason, when a colloidal silver solution is sprayed regularly on female cannabis plants during the early flowering stage, she will grow male “balls” (which are full of female pollen) instead of growing buds.
This allows the grower to collect pollen from a female cannabis plant. You can use this all-female pollen to pollinate another female plant. With two female plants as parents, ALL the seeds will end up being female.
That is why colloidal silver allows can be used to create female x female cannabis crosses and produce feminized seeds.
Rodelization takes advantage of the fact that a female plant will try to pollinate herself as a last resort when she doesn’t get pollinated and is nearing the end of her life cycle. That is why sometimes older or stressed female plants grow a few male “balls” as a last-ditch attempt to self-pollinate. When successful, she will grow a few seeds.
These self-pollinated seeds will have gotten both sets of genes from the same female plant, so both parents will be female, and all resulting seeds with be female.
Why do you want feminized seeds?
When growing regular cannabis and trying to produce seeds, the resulting seedlings end up being about 50% male and 50% female.
This can be a big disadvantage for the cannabis grower because male marijuana plants do not produce very much THC or other psychoactive cannabinoids.
Therefore, when growing cannabis indoors, most growers will throw away all male cannabis plants as soon as they’re discovered. However, it’s easier to not have to worry about males since identifying and removing male cannabis plants can be a bit of a pain. Plus, male plants also take up precious space in the grow room until their gender becomes apparent when they are forced to start flowering.
Another problem with male cannabis plants is that they can accidentally pollinate your female cannabis plants which will cause them to concentrate on making seeds instead of making sinsemilla.
Sinsemilla is the term for cannabis flowers/buds that don’t contain any seeds. Dried sinsemilla is what most growers are trying to produce when growing cannabis.
So what can you do? If you create feminized cannabis seeds, then all the resulting plants will be female and you never have to worry about male cannabis plants again.
While there are a few different ways to create your own feminized cannabis seeds, for some people making your own feminized seeds may be impractical. If you are looking for a discrete, dependable seed bank, I personally recommend Seed Supreme. They have proven to be trustworthy (at least as of November 2021 during the time of this writing) and have a huge selection of feminized seeds. However, seed banks change so it’s always a good idea to double-check our seeds list for recommended seed sources as we update it regularly based on feedback from our readers.
How it Works
The main method used to create feminized seeds is to take a known female cannabis plant and force her to grow male pollen sacs and produce pollen.
You can then take this all-female pollen and use it to fertilize other females. Because all the genetic material comes from females, you will end up with seeds that are 99% female.
So far for me, it’s worked 100% of the time. Any male plants that do result when growing feminized seeds are probably genetic females that are growing with male characteristics.
There are several processes by which female plants will grow male characteristics. Some female cannabis plants will start growing male organs if they are left in flowering for too long, as a last-ditch attempt to pollinate themselves since they were not pollinated by any male plants.
Some female plants will also show male characteristics as a result of heat and light stress. But for the grower, the most convenient way to get a female cannabis plant to make pollen is to treat her with a solution known as colloidal silver.
Below I will first explain how to make feminized Cannabis Seeds using colloidal silver, then I’ll briefly explain the all-natural rodelization method, which is an all-natural though less reliable way to get feminized seeds.
Use Colloidal Silver Spray to Make Feminized Cannabis Seeds Like the Seed Banks Do
- You’re able to produce feminized seeds using any two female cannabis plants (even clone-only strains!)
- You can produce seeds consistently
- You can control how many seeds produced
- Easy to make hundreds of feminized seeds if needed
- You will need to find a source of colloidal silver which will be used to spray the cannabis plants as they start flowering. Your main options are: buying colloidal silver directly, buying a colloidal silver generator, or making your own simple colloidal silver generator yourself (instructions below)
- It is not safe to directly use/consume any cannabis which has come into contact with colloidal silver, though any seeds produced by a treated plant’s pollen are 100% safe. Note: Some space-starved pot farmers will use the colloidal silver to spray just the bottom branch of a cannabis plant so they can still smoke/use the rest of the cannabis buds. You can do this, just be extremely careful not to get any colloidal silver spray on any part of the cannabis that you will be consuming. See this page (https://nccih.nih.gov/health/silver#hed2) for more information on the risks involved with using colloidal silver.
When a female cannabis plant is treated with a solution of tiny silver particles suspended in distilled water, the plant will start to exhibit male characteristics.
This solution of silver in water is called colloidal silver and can be purchased from a pharmacy/online or easily made at home . Or you can make it with a colloidal silver generator.
Some people drink colloidal silver for its health benefits and others use it occasionally on plants to help control bacteria, insects, and fungus growth on the leaves.
To take advantage of this, you thoroughly mist a female cannabis plant with colloidal silver every day right when she enters the flowering stage, she will start growing male “balls” full of pollen. Keep misting the plants daily until you see the beginning of male pollen sacs forming, usually around 10-14 days.
The concentration of silver ions in the water acts as an ethylene inhibitor/antagonist on the plant, which forces the plant to create male pollen sacs instead of female buds.
After the balls start forming
You need to let the sacs swell like a big empty balloon.
You will be able to tell when they are about to open because the leaf section protecting the pollen starts to crack.
At this point, simply take the pollen sacs off and place them in a cool dry place for a week and let them start to dry.
The pollen will come out if you shake them about a little, or you can also cut open the sacs to get to the pollen inside.
Use this pollen to pollinate female plants and you will get all-female seeds that are a mix of both their mothers.
This method is great because it will force almost any female cannabis plant to show male characteristics.
Unlike the rodelization method described below, you are not selecting plants that show hermaphrodite traits. The genes of the plant are completely unaffected. This method will also produce a lot of pollen consistently compared to the rodelization method.
The one downside to this method is that it is not safe to use any cannabis that has come into direct contact with colloidal silver.
You should, therefore, destroy the plant after the pollen has been collected.
You will also want to ensure that you clean any remaining traces of silver off your equipment in case you accidentally contaminate another cannabis plant with silver.
Here are the main things to keep in mind when using the colloidal silver spray method:
- Make sure you spray the cannabis with a strong enough colloidal silver solution (at least 30 PPM of silver)
- Spray the cannabis thoroughly to almost drench all the parts you want to turn into pollen sacs
- Spray the cannabis regularly, at least once a day for 10-14 days, starting when you change the lights to 12-12
- Spray the cannabis with colloidal silver every day until you see signs of male pollen sacs forming. Some hardy strains may need over 2-3 weeks spraying before they ‘turn’.
Where to Get Colloidal Silver
Colloidal Silver is created by submerging two pieces of pure silver in distilled water and then running an electric current between the two pieces of silver. The electric current will cause silver ions to be deposited in the water which creates a colloidal silver solution.
Buy Colloidal Silver: You can buy colloidal silver which has already been prepared and is ready for use. If you’re purchasing colloidal silver, try to find a solution that has at least 30 PPM (parts per million) of silver. However, buying Colloidal Silver that is already prepared can get expensive.
Buy A Generator Kit: A better option is to buy a relatively cheap colloidal silver generator to easily make your colloidal silver. This Colloidal Generator kit comes with everything you need including silver. All you need to do is provide the water and a container.
Make Your Own: You can make your own colloidal silver generator at home. The diagram below should illustrate what you need to do.
- 9-volt battery
- 9v Battery Connector (less than $2 at a hardware or electronics store)
- Pure .9999 or 999 Silver (yes it must be pure)
- Distilled water (yes it must be distilled)
- Alligator clips (Optional: but will make things much easier) (Optional: only needed if you want to use alligator clips)
The diagram above will show you how to easily make colloidal silver to make feminized cannabis seeds
When you first connect everything, you may be surprised because it will seem like nothing is happening. You will know if it worked by the next day because the whole process will leave a silvery residue on your silver. You may need to use sandpaper or something else rough to clean your silver each time after creating a batch of colloidal silver.
If you don’t have a soldering iron and would still like to solder alligator clips onto your battery connector, then I recommend going to a hardware store and asking someone if they will help solder it for you.
Remember to keep your resulting colloidal silver solution away from any light or it will deteriorate and turn a dark gray color. If this happens, then you can no longer use the solution for creating feminized seeds.
Avoid most problems when making colloidal silver by:
- using pure (distilled) water
- using pure (999/.9999) silver
- giving electrolysis enough time to work so you don’t get a weak solution (at least overnight)
- make sure the solution has as little contact with light as possible until you use it
How to Make Feminized Cannabis Seeds Using Rodelization
- Very Simple
- May not produce many feminized seeds
The Rodelization method is all-natural and is the simplest method to create feminized seeds, but it is also unreliable and may not produce much pollen. The premise is that some female marijuana plants will start growing male pollen sacs/sex organs if they’ve been left in flowering too long (past the peak point of harvest). This is a last-ditch attempt by the marijuana plant to pollinate itself so that it at least produces a few seeds. You can collect these male pods and use the pollen inside them to pollinate other female plants. You pollinate female plants by evenly covering their buds with the pollen after they’ve been flowering for 2-3 weeks. Females that are pollinated in this way will start growing all-female marijuana seeds. If you’re very careful, you can pollinate only some of the buds on a plant that will produce seeds, and leave other buds alone so they can still be used for consumption.
This issue with this method is that some strains of plants never seem to grow male characteristics naturally. Additionally, with this method, you’re selecting plants that have a natural genetic tendency to show male characteristics. This can produce offspring that are more likely to show male characteristics themselves which may or may not be what you’re going for. Lastly, even when you do get male pollen sacs from a marijuana plant in this way, there tends to be a lot less pollen than from a typical male plant.
The one great thing about this method is it’s completely all-natural so you can implement this strategy with an organic grow.
If you want to buy feminized cannabis seeds, I recommend The Nirvana Seed Bank
Tiresias Mist Feminized Seed Spray?? Any DGC use this?
So, I came across this spray on Youtube watching a guy claim he never has to buy seeds again and for me being an autoflower grower I was wondering if anyone has used this before? Is this shit safe? Scotty was just saying about how the downside to Autos is that you cant clone them. Its a one and done.Thinking about buying this off Amazon for next grow. I would probably use it on 1 plant separated from the others in a 2x2x4 grow tent. I have never seeded a plant before( on purpose at least) I have had a few hermies from Fastbuds seed bank (Blue Dream Matic) but didn’t let it grow out to maturity. I have found a few favorite strains so far and wonder if i use those last beans I have to try and get more seeds.
Anyway its just an idea. I haven’t heard of this before and not sure what to believe unless truly tested. Would love to hear some input. It will be at least 3 months before I decide to get this. I want to finish this harvest I have now before experimenting with making seeds.
Thanks guys and Stay Irie!
Tiresias Mist is a new spray that enables growers to create feminized seeds. The product is owned and distributed by Phoenician Nutrients, LLC, which is based out of Scottsdale, AZ. Tiresias Mist was the result of research with the goal in mind of standardizing a treatment method to produce feminized seeds and responsibly cross-pollinate. Currently, growers do not have a product that is recognized and tested to grow clone seeds of the host plant(s). Currently, there are a number of theories, practices, and products that are used with very mixed results and the products are not intended to be used on plants. Tiresias Mist is safe for plants, humans, and animals so there is no need to worry about any harmful side effects to the environment.
****Always female seeds….No more guessing involved
****No more waiting weeks for overseas deliveries – A tap root from a seed will produce higher yields
****Store seeds for future use and crop timing
****Easier to transport seeds versus seedlings or clones
****Become your own mad scientist by creating your own genetic strains
****Allows you to save your strain!
I tried hitting them up a while back and I couldn’t get a straight answer from anyone about wtf it’s made of.
The label says it’s made from “natural minerals” and “inert ingredients” which is basically meaningless. It also says it “contains no chemicals”… which also seems like meaningless nonsense because a “chemical” could be defined is basically any prepared substance.
I suspect it’s colloidal silver or something similar. (Which you can get cheaper from other sources.)
I’d love to hear from them and have them explain wtf it is that they are selling, but I won’t use anything from a company who won’t give me a straight answer about wtf is in their product
On a separate note… making fem seeds using a product like this is very different than cloning so this isn’t really a solution to not being able to clone autos. If you wanna take clones, grow regular seeds.
Cloning gives you a genetically identical copy, selfing or making fem seeds will still give you a lot of variation from seed to seed.
Selfing can be a cool project and you can find some cool stuff going down that path. However, it’s important to understand you won’t get consistent plants as a result because you are combining genetics (aka breeding), not cloning.
Hey Soup you are the person to ask probably. Where is the best place to buy the silver biosulphate or whatever it is called. Is that the same as colloidal silver. How do you mix the spray for making the fem seeds. This is something I am interested in doing with a few plants I have, I have some male pollen saved but I know nothing about the father other than its a stretcher. I thought it would be safer to go this route. Should I make a post about this. I would mainly like to have the seeds to preserve the phenotype as it is from a 20 yr old seed I will never be able to aquire again I have kept these plants going a couple years but I would like to have a better way to preserve this strain and while I am at it another and start with something new.
Check out the article I posted in the comment below. I haven’t tried any of this stuff myself yet, but that article looks like a good resource. Seems like you can get both the ingredients you need to make sts on amazon.
Also, check out my other comments below about seeds and variation. Anytime you work with pollen you are gonna get some variety in the end results. If your goal is preserving a specific pheno, cloning is a much better way to do it. ✌️
Cool thanks a ton, literally after I posted that comment I reloaded the page and seen that post. Great info. Thanks
Thanks Soup! I actually was under the impression if i have nice pheno lets say Gorilla glue auto. If i self her then her seeds in return would give me the same plant with same dominant traits from the mother. I guess thats why there is pheno-hunting.. Which I dont believe is a practice with autoflowers? May be wrong. I want to give photos a try. I have those free seeds from Obsul33t Alien orange gum and a pack of alien orange Congolese. I’m just a little nervous going from autos to a photo. I do treat the auto like I would a photo. By keeping the dark cycle dark. But I game and spend alot of time in same room as the closet i grow in. I have black out curtains to where its pitch black, but hearing so many times about peiple fucking up because they left a light on the room and make it seem like a small amount of light on a dark cycle can ruin the harvest.? Maybe soon i will give these a try. Im in “Great” state of GA so outdoor is a no go.. And neighbors are nosy so I gotta keep it small and compact. Why i choose autos. Thanks again man. Sorry for the rant. A bit lit at the moment.
Stay Irie Soup!
Anytime there is “sexual reproduction” (aka pollination when we are talking about cannabis) there is going to be variations in the resulting offspring.
Seedlings from similar parents may contain some similar traits, but there will always be some differences.
Cloning is actually “asexual reproduction” which is a completely different type of process. Cloning results in genetically IDENTICAL copies of the original.
I grow photoperiod plants in a tent in my office and I haven’t had any issues. I’m in the room working a lot and often have the office lights on during the tent’s dark cycle and I haven’t had any issues.
there are some genetics that are really prone to herming due to light leaks, but generally I think most strains are able to handle minor light leaks much better than most people think.
You can also greatly reduce your risk by choosing solid genetics, and avoiding strains with known hermaphroditism in the family.
a lot of the “hype” popular genetics like strains related to cookies, chems and gorilla glue are all much more sensitive because those strains literally originated from herming plants. When you have a herm in the family tree, those seeds are MUCH more likely to carry those same traits.
Hey Rasta It’s actually silver thiosulfate. But not worth the money as there is only enough in there to spray one branch of a plant for the time it takes to get pollen. I used it once and it worked but for the price you can make a bunch of it buying the raw materials and distilled water and mix your own. Keeping it in the fridge preserves it for a month There are a few articles on it on the web but you have to play with spray intervals on certain strains or you will wind up with sacks inside the bud making it hard to get out. Autos are more tricky than photos because you have to know exactly when they will start flowering and you have to find the right time to start spraying to get one looking as male as possible and collect the pollen then start another run to use that pollen on when buds are formed enough to get a good seed count.
I could be wrong, but I don’t think this product is Silver thiosulfate.
My understanding is that sts needs to be stored in two separate bottles and has to be refrigerated. This product is one bottle and I think it’s typically not refrigerated.
Also I really don’t think they would say it contains no chemicals if it’s STS, since STS is most definitely a chemical.
I think it’s more likely this product is some form of collodial silver. That would explain the single bottle, lack of refrigeration, and their claim that it is “natural mineral extract”
Good to know. When and if it comes around to trying this method out I will definitely reach out for some info on the silver thiosulfate. If understand right, This stuff which is Silver thiosulfate is how you would “self” a plant to produce seeds without having to introduce pollen? So, making a female plant herm? isnt there ways to do that naturally without chemicals? OR does the chemical method give you higher rate of feminized seeds and latter gives regular seeds?? still learning guys thanks for bearing with me.
Selfing still involves pollen, you are just getting the pollen from the same plant you are pollenating.
Also, Using a chemical to induce a female plant to produce pollen is technically very different than a herming plant that produces pollen.
A herming plant produces pollen because it carries genes that cause it to grow pollen sacks. Any resulting seeds are very likely to cary the same genes and have the same issues.
A plant treated with sts produces pollen because it’s hormones are being chemically manipulated, not because of genetics.
With herms you get pollen sacks because it’s hardcoded into the genetics, with sts you get pollen because you are manipulating the plant by using chemicals to block hormones.
On a slightly different note…
I am actually mildly interested in getting my hands on a little STS….
I’ve never actually used it in any of my own projects, but I’ve got some special ladies I’m working with right now so it’s something I’m thinking about trying.
If anyone in the crew has a hookup or knows a good reliable source where I can cheaply acquire some STS for a small project… get in touch!