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Bag Seeds and What to Expect of Them

Novice growers keep asking questions about bag seeds all the time. A girl I know has recently fired at me a series of questions that she thought no one would ever answer. I’m sure at least some of you have been as puzzled by these questions as her. Here it goes:

I’ve been asking everyone about these bag weed seeds, and no one can explain this to me. Because I swear to God I can’t understand it myself. If the buds haven’t been pollinated, then the seeds should be sterile. But they aren’t! I’ve germinated one such seed myself, and it was growing fine.

If the buds HAVE been pollinated, then why the f… they are making me high?!

And if it was a feminized plant, is it normal for feminized plants to produce seeds?

Questions like these made me realize that people don’t grasp the concept of bag seeds. Moreover, there is a fundamental lack of understanding of how and why cannabis plants produce seeds. Can all of them be grown? Are all of them worth growing? How different types of seeds (feminized, autoflowering, regular, hermies, etc.) fit into the picture? In this post, I’ll try to bring clarity to these issues.

Bag Seeds Meaning

Suppose you buy some buds in a ‘bag’ (a zip lock). You expect the buds to be high quality which means—among other things—that they’ll be without seeds. The buds really do look, smell and taste great, and make you high, too. However, when grinding them, you find a seed or two. And this is what we call ‘bag seeds’.

Will Bag Seeds Grow?

Most seeds you find in a zip lock will definitely grow. For plants, seeds are a means of reproduction. They aren’t just for show. Of course, there are sterile or infertile seeds in other crops that have been artificially modified, but not in cannabis. So these seeds grow like any other: they germinate, they sprout, they get bigger, and then you see your bag seeds flowering as any other type of marijuana would.

This is because the presence of seeds always means that there has been some natural pollination. Either there was some undetected male somewhere near the grow, or there were some stray male pollen sacks in female buds. The latter occurs much more often because female plants often grow a few male flowers due to stress (so called hermies, or hermaphrodites). But, no matter where the pollen has come from, the pollination leads to the production of seeds, and these seeds are fertile.

So, if you ask yourself: “Can I grow bag seeds?”, the answer is always ‘yes’. Can bag seeds grow good weed? Well, it’s another question. Read on.

Are Bag Seeds Worth Growing?

Growing unknown bag seeds is always a toss of a coin. Even if you like the buds in which you have found these seeds, it doesn’t mean you’ll get the same quality. Let’s put it this way: you’ve now met the mother (the buds you’ve just smoked), but you don’t know anything about the father (the source of pollen). It may have been outstanding, it may have been mediocre, or it may have been the most worthless ditch weed that grows in your area.

And don’t forget that the father could also have been another mother (a hermaphrodite plant). So do bag seeds work? Yes, they do. Are bag seeds any good? Well, this depends on the quality of both parents, and you simply don’t have enough information.

Having said that, a bag seed can be a real gem. You probably have heard stories of first rate strains that have been bred from seeds found in a bag of buds. One example is the famous Cinderella. It would be an irreparable loss for the marijuana growing community if the breeders of this masterpiece simply sneered at those seeds and threw them away.

Bag Seeds vs Seeds Bought in a Seed Shop

If you simply want to grow yourself some good bud and expect reliable results, by all means buy your beans online from a reputable seed shop.

The reasons to grow weed from bag seeds are very few:

if you suspect that your bag seeds could be amazing and feel lucky (because you’ll need PLENTY of luck),
when your budget is strained to spend any money on seeds,
if you want to grow a lot plants outdoors in the cheapest way possible.

What we don’t recommend is growing bag seeds indoors. With the cost of the setup and electricity bills and what not, the money you spend on seeds is arguably the least significant expense item.

Some Questions about the Genetics

If you have read carefully what we have said above, you’ve already guessed that bag seeds, like any other type of weed seeds, can be really anything (in terms of their genetics). But, for clarity’s sake, let’s answer any specific questions that you might have.

Are Bag Seeds Feminized?

Whether the seeds found in buds are feminized or not depends on the source of the pollination. If the pollen was from a male plant, the seeds will be regular, meaning that the ratio of male to female plants will be around 50/50. But if the source of the pollen were male flowers (hermies) from the same plant or another female/hermie plant in the garden, the resulting bag seeds are feminized. Please note that such seeds are also very prone to become hermies if you subject them to stress.

Obviously, the only way to tell if your bags seeds are feminized or regular is to grow and flower them.

Are All Bag Seeds Hermies?

Most female plants can become hermies if you subject them to stress. It all depends on the amount of stress needed before you see male flowers in your female buds. If the buds have been pollinated by a male (see above), they will show more stability. If they have been pollinated by a hermie, watch out because even the least amount of stress can make such plants ‘turn to the dark side’.

On average, bag seeds are way less stable than store-bought seeds.

Can Bag Seeds be Autoflower?

If both parents were autos, the seeds are 100% autoflowering, too. The same if an autoflower self-pollinated itself (see our experiment where we produced our own feminized seeds by self-pollination using colloidal silver).

Is it Normal for Fem Plants to Produce Seeds?

Fem plants produce seeds just like any other type of plant (if you pollinate them). It doesn’t matter whether you have grown a plant from fem seeds or regular. Neither type is infertile. Of course, bud growers do everything they can to produce buds without seeds, but shit happens, doesn’t it?

Can Buds With Seeds Make You High?

The potency of buds is a matter of genetics, and not of whether the buds have been pollinated or not. Of course, buds with seeds have inferior quality because a pollinated plant directs all its energy to seed production and not resin production. Seeded buds are smaller, have less resin glands and lower levels of THC, but they DO make you high nevertheless. With many seeds, the quality is significantly worse. With a few, you’ll probably see no difference.

This is it. We hope we have answered all your questions. If not, don’t be shy to ask in comments.

External Links:

Marijuana Botany An Advanced Study: The Propagation and Breeding of Distinctive Cannabis, R.C. Clarke

Can Feminized Seeds be Cloned and Kept as Mother Plants?

The feminization technology has been around for close to 30 years now, but some people are still uneasy about this ‘new’ invention. Our personal opinion is that, for a casual grower, feminized seeds are better than non-feminized. It’s true that in some rare cases it’s safer to use genetics that haven’t been tampered with too much, i.e. regular seeds. But cloning and keeping a mother plant isn’t one of those cases.

Feminized seeds can be cloned without any issues and kept as mother plants and a source of more clones. They will be the exact copies of the parent plant, including its ability to produce only female buds. Feminized clones may ‘hermie’ on you due to stress, but so can regular genetics. Read on.

Feminised Seeds Clone as Easily as Regular Ones

Fem seeds are simply those that produce female plants in close to 100% of cases. In most other important ways, they are no different from regular marijuana. So, cloning feminised plants works the usual way. What you CAN’T CLONE (or, rather, don’t want to clone) are autoflowering strains. But that’s a different story.

As for feminized plants, you can take cuttings from them as soon as the side branches are long enough. When they reach 4 inches (10 cm), the procedure has every chance to be successful. After these cuttings root, you can either veg and flower them or turn one into a mother plant. In short, everything is the same as with regular cannabis.

Can You Clone Feminized Seeds for Professional Projects?

For any amateur grower’s needs, modern feminised seeds have stable enough genetics. But if you want to produce buds or seeds professionally, you may think of building your collection of mother plants from regular seeds instead.

We have written a separate post comparing feminized and regular seeds. The short version is: fems are great, but regs might have more stable genetics. It means that in extreme situations they will be less prone to hermies. Hermies (hermaphroditism) is a situation when a female plant produces male flowers due to stress.

Finding a Stable Feminized Plant to be Cloned and Kept as a Mother

In another post, we’ve outlined a strategy—which we shall briefly repeat here—of finding the most stable plant for clones and mothers. You can use this strategy both for feminized and regular seeds. It goes like this.

First, you germinate a large batch of seeds of a certain strain. Then you grow them till they are big enough, and make them start flowering by switching to the 12/12 light schedule — 12 hours of light and 12 hours of darkness.

For normal flowering, the darkness must be complete and uninterrupted. If you allow light leaks into your grow space during the night or turn on the lights even briefly, you disrupt the dark cycle. This can slow down the process of flowering and often results in hermies in unstable strains.

We Use This Feature to Spot Weaker Genetics

Once the buds start to form, we begin to disrupt the correct 12/12 light schedule on purpose. Let’s say we turn on the lights for an hour in the middle of the night, and the next day, ‘forget’ to turn off the lights completely, and on the third day, we make the dark period longer by a few hours, etc.

All plants that are naturally prone to hermies will sooner or later show male ‘bananas’ in their female buds. These plants we throw away. And those that remain female despite our best efforts to make them change sex, obviously have a very stabilized DNA. So you can use them for cloning or making seeds.

Of course, first you need to revert them back to the vegetative stage—the procedure known as re-vegging—and only then you can take clones. Note that there’s a high-stress method of taking clones from a FLOWERING plant. It’s called monster cropping, and those with advanced growing skills can try this method as well.

Autoflowering vs Feminized: What’s Best for a Casual Grower?

When you go to a seed shop, the most conspicuous categories you see there are ‘autoflowering’ and ‘feminized’, so most growers face a difficult choice: autoflowering vs feminized. Let’s look at the advantages and disadvantages of each.

Autoflowering vs Feminized Seeds

Let’s start with a disclaimer: it’s not really correct to contrapose these two. A seed can be both feminized and autoflowering, or have just one of these characteristics, or neither of them.

‘Feminized’ means that the seeds produce only female plants. ‘Autoflowering’ means that the seeds will automatically start to flower as soon as they are mature enough (let’s say in 2-4 weeks from sprouts).

What are auto feminised seeds then? Well, those that flower automatically + produce flowers that are always female (i.e. buds).

In contrast, the seeds that produce both male and female plants are called ‘regular’, and those that won’t start to flower until you change the light cycle for them are called ‘photoperiod’.

So, seed shops make the bulk of their sales with the following two:

feminised auto seeds (mostly referred to as ‘autoflowering’)
feminized photoperiod seeds (mostly referred to as ‘feminized’)

And these two are exactly what we are going to compare.

Advantages of ‘Feminized’ Seeds vs Auto Seeds

They Have More THC

When I myself started growing weed many years ago, I was ignoring autoflowering strains completely. At that time, they really weren’t good enough. Over the years, though, the situation has changed.

Today’s autoflowers routinely have around 20% THC. This is an unheard of level for most photoperiod varieties that I used to grow and considered ‘strong’. Still, if a breeder takes some exceptional genetics with say 25-28 percent of THC and makes an autoflowering version out of it, the THC content in the resulting auto flower is always lower. Compare, for example, such a legend as Gorilla Glue with an autoflowering Gorilla.

Autoflowering vs Feminized Yield Per M²

Autoflowers have a shorter life cycle, so it’s only logical that they produce less buds in the same growspace. Again, some autos can be significantly more productive than some photoperiod strains, but, within the same genetic line, the auto version always yields less grams per m² than the photoperiod one.

The Difference in Yields Per Plant Can be Colossal

Photoperiod strains can be vegged for as long as it suits your needs. This allows you to grow your plants into real giants. It’s hardly practical indoors, but outdoors you can harvest as much as several pounds of dry bud from every ‘tree’. Growing fewer but bigger plants is also convenient when there are legal limits as to the number of plants you are allowed to grow.

They Leave More Room for Rookie Mistakes

Novice growers tend to make mistakes from day 1, so they run into trouble long before the flowering stage begins.

With a photoperiod variety, you can simply find a solution to your problem, take necessary measures, and wait till your plant is in good shape again. And only then you change your light schedule to 12/12 to induce flowering.

Autos, on the other hand, don’t wait till you correct your mistakes. Even if they are small and sickly, they are ‘on the clock’ and will start flowering despite their pathetic condition. The result — tiny plants and puny yields.

That being said, I have seen autoflowering strains that are a little more flexible than that. They start flowering when they reach a certain size and have a certain number of true leaves (let’s say 4 developed pairs of true leaves and the 5th one just forming). This can happen after 3 weeks from sprouts (when everything has gone well). Or, if the initial growth was very slow due to bad conditions, they can postpone the flowering till week 4 or even 5. Not all autos behave this way, but some do.

They Let You Take Clones and Keep Mothers

If you like a particular feminised plant and want to keep it for future use, simply take a clone, root it and keep it under 18 hours of light a day indefinitely. This plant will never flower, but will keep growing new leaves and side shoots which you can use for cuttings.

Theoretically, you can take clones from autoflowers, too, but you can’t stop them from flowering, no matter how many light hours you give them. So the only way to propagate your favorite autoflowering genetics is to force the plant to self-pollinate and produce seeds.

You Can Re-Veg Them

To reveg means to revert your plant back to growth after harvest.

A harvested plant is hardly more than a stump with a branch or two and some leaves. But you can turn this pathetic remnant into a full-fledged plant. It can then give you a second harvest or be turned into a mother plant and a constant source of clones.

Obviously, autos can’t be revegged.

They Let You Save on Electricity During the Flowering Stage

Feminized plants spend their 8-10+ weeks of flowering under a 12/12 regime, meaning you burn electricity for only 12 hours a day. The saving can be especially significant if your electrical company offers night rates. For autoflowers, the standard light/dark cycle is at least 18/6 (more hours, more money).

Advantages of Autoflowering vs Feminized Seeds

You Can Grow Them Outdoors in Practically Any Climate

I happen to live in a region with very harsh weather, so I know this firsthand. I started with feminized photoperiod strains and only chose those that were early finishers and tolerant of cold and even frost. Nevertheless, it was always a lottery. Some of those ‘quick’ feminized seeds didn’t even start to flower before the first snowfall. Others didn’t reach full maturity.

Later, I would grow from clones using genetics that had proven to really finish early, but even they didn’t perform equally well every year. It all depended on the weather in the crucial 3-4 weeks in late September – early October.

After I tried an autoflowering strain for the first time, I’ve never bothered to grow a photoperiod variety outdoors ever again. Except maybe as an experiment. As an auto grower, you have an opportunity to choose the warmest, sunniest 2-3 months of the year to complete the whole cycle—from seed to harvest—and count on your buds becoming fully mature.

You Can Have Two or More Consecutive Harvests Per Season Outdoors

It all depends on your climate. If the growing season (with no frosts) in your region is 150 days long, you can easily have two back-to-back auto grows. It’s sometimes very convenient to have several smaller harvests than one large one per season.

One reason is that trimming is a very time consuming procedure. Also it’s nice to have some fresh buds to smoke in the middle of summer, while you’re waiting for the bulk of the harvest that which be mature in fall.

With Autos, You Don’t Worry About Light Pollution

If you grow photoperiod marijuana outdoors, nights during the flowering stage should be dark. Weed plants don’t mind the moon and stars, but react badly to city lights. Indoors, you must make sure that your grow space is completely sealed off and doesn’t allow light leaks. With auto flowers, you don’t have these issues.

You Can Have Both the Vegging and the Flowering Plants in One Grow Room

For photoperiod feminized varieties, you must dedicate two separate rooms. In one, lights will be on for 18 hours a day (the veg room), in the other — for 12 hours a day (the flowering room). This is something that not every amateur grower can afford. As for autos, you can keep several generations, each at a different stage of maturity, under 18/6.

Autoflowering vs Feminized Size

Autos tend to be much smaller. This is very convenient for tight spaces and micro grows, or if you want your secret garden to be inconspicuous.

Autos Finish Faster

Theoretically, you can find a photoperiod strain that grows very fast in veg and has a very short flowering period. So, by inducing the flowering early, you can make it finish in 10-11 weeks from seeds. But this is what an average auto can do without any hassle, and some are much faster than that. So, if you want to end that T-break of yours a.s.a.p., choose autoflowering cannabis.

This is it.

Now you have a sort of a checklist that will help you decide if you’ll be better off growing feminized seeds or autoflowering. We’ve also written a separate post comparing feminized seeds vs regular. Be sure to read it, too!

Feminized Seeds vs Regular: Pros and Cons of Both

Making a choice for feminized seeds vs regular isn’t always easy.

When you go to a seed shop, all you see is feminized seeds. Most customers just buy whatever everybody else buys, but some people don’t like the idea of their seeds being genetically modified, and so they are suspicious. If you too have second thoughts about buying feminized seeds, our post will help you make an informed choice.

Let’s Define Feminized Seeds First

Feminized cannabis seeds are the seeds that have been genetically manipulated in such a way that the plants grown from them are almost always female.

In contrast, regular seeds grow into plants that can either become male or female, with more or less a 50/50 chance.

If you want more details and insights into the biology and history of feminized seeds and what to expect of them, we’ve written a separate post about it.

Are Feminized Seeds Bad?

The short answer is NO, they’re OK.

It’s true that some 30 years ago—when fems first made their appearance on the weed scene—growers routinely ran into problems with feminized seeds. The reason was that, initially, the process of feminization involved too much stress. As you might know, stressed marijuana plants often turn into hermaphrodites. And if they later produce seeds, those seeds inherit this feature, too. Meaning the seeds harvested from hermie plants grow into hermies as well if they’re stressed even slightly.

Fortunately, today’s market—with its huge supply and ruthless competition—forces breeders to eliminate stress from their practices. Most of them offer customers very stable genetics. I myself have seen regular plants change sex for no particular reason. And fem plants that were standing next to them were perfectly alright. So, feminized seeds aren’t good or bad per se. It all depends on the breeder who’s made them.

So Are Feminised Seeds Better Then?

I risk making purists angry, but I think that yes, they are. If you grow cannabis for buds, the choice of feminized seeds vs regular is a no-brainer.

With regular seeds, you’ll have to plant twice as many seeds as you need. Don’t forget that half of them will produce males and you’ll throw them away. This will leave gaps in your grow room that’ll have to be filled somehow. Besides, it’s a waste of resources if you take care of a plant for several weeks, and then it goes in a trashcan.

You’ll also have to watch your plants vere closely after you flip the switch to 12/12. It’s the time when plants reveal their sex, and males must be discarded IMMEDIATELY. You should never risk leaving them in your grow room for an extra couple of days for whatever reason. Even one pollen sack could ruin your whole crop.

And when you grow pot outdoors, guerilla-style, and can’t afford to visit your secret patch very often, the possibility of even one plant turning male in your absence is a major headache. Hell, cross-pollination can happen even if male and female plants are within 10 miles of each other, let alone in the same patch!

With feminized seeds, you’ll have none of these worries.

Are Feminized Seeds Less Potent?

There is nothing in the genetic makeup of feminized seeds to make them less potent than regular seeds. The genes that determine the sex of a plant have no influence over potency. And the same goes for terpenes. So, stuff grown from feminized seeds will smell and taste good and will make you as high as the buds grown from regular seeds.

Do Feminized Seeds Yield Less?

The yields that you can expect from cannabis seeds don’t depend on whether they are feminized or not. So, if you go to a seed shop and see two versions of the same genetics—feminized and regular—rest assured that both yield exactly the same. Yields may be high or just average, but either way it has nothing to do with feminization.

Feminized Seeds Disadvantages vs Regular Seeds

The main disadvantage is the higher price compared to regular seeds. However, recently the prices have been going down. At least some breeders sell their feminized beans very cheap.

One more (rather obvious) thing is that if you want to produce your own seeds the old-fashioned way (when male and female plants grow next to each other, and pollination occurs naturally), you can’t do it with feminized seeds.

And even if you want to make your own feminized seeds (which is not so hard btw), you have a choice to use either feminized seeds or not, but it’s probably best to take genetics that are more ‘natural’, that is regular seeds.

Another drawback has more to do with the integrity of a particular breeder. And it doesn’t matter whether they make feminized seeds or regular. If they’re in a hurry to market half-baked strains and make a profit, it’s one thing. In this case, you may expect a great deal of variance of phenotypes. Probably, also a fair share of hermies and mutants from both feminised or regular seeds. But if they make sure to stabilize their varieties over several generations, it’s a totally different thing.

So read reviews about a breeder and their strains, look for how stable their plants are and whether growers have ever problems with hermies. If the breeder checks out, their feminized seeds can be better than non feminized seeds by another, less scrupulous breeder.

Bottom Line: Feminised Seeds Rule!

Purists and traditionalists never win in the long run. Progress always does. So don’t look down on such a wonderful modern invention as feminized seeds. In most situations and contexts, they are your best bet.

Feminized Seeds Explained: Let’s Separate Fact from Fiction

Today, feminized seeds are everywhere. You can grow weed for years without actually laying your eyes on anything else. As if marijuana were a single sex (female) plant all along. But it isn’t so, and it’s best to have clear answers to the following questions about feminized seeds: what does it mean and what exactly to expect from them? These questions are not just theoretical, but have a real practical value.

What is a Feminised Weed Seed Exactly?

Here’s a very short and pragmatic feminized seeds definition for you. Feminized seeds are cannabis seeds that turn into female plants only. This is how they differ from regular seeds which can turn either female or male. Now let’s talk about it in more detail.

As you may know, cannabis has two distinct sexes. Take a bunch of seeds from plants grown in nature and sow them. Some of them will grow into male plants and some — into female plants. The ratio will be around 50/50. Growers call such natural seeds regular.

For some time, regular seeds were all that was available to weed growers. The first small batches of seeds that deserved the name ‘feminized’ started to appear in the beginning of 1990s in Amsterdam. It was the founder of Dutch Passion who first offered them. Today, Dutch Passion is one of the oldest commercial seed banks that are still around.

The feature of this new type of seeds was that they grew into female plants more than 95% of the time. In fact, closer to 100%. It was a God’s gift for bud growers because now they didn’t have to throw away half of their plants at the beginning of the flowering. They knew that there would be only females in their garden and that they would harvest buds from every seed they had sowed.

Are Feminised Seeds Always Female?

Well, ideally they should be, and serious breeders go to great lengths to ensure that ALL their feminized seeds become female, but in reality they never are. Not 100%. Even the best feminized seeds produce males occasionally. Fortunately, such occasions are rare. Statistically speaking, you should grow close to a hundred of plants before you see a male intruder in an all-girl team. So can feminised seeds turn male? Yes, they can, but it’s highly unlikely for you to have this issue with your very first attempt.

What Makes a Feminised Seed?

The feminized seeds definition we’ve given above doesn’t explain how exactly breeders manipulate the beans into producing only females. In a few words, cannabis plants can change their sex in response to stress or when exposed to certain chemicals. It means that females can turn into males and produce pollen sacks instead of flowers.

Growers have long noticed this phenomenon. It’s called hermaphroditism and is a very unwelcome thing in your garden because you want buds without seeds and ‘female’ pollen will make all the buds go to seed and your whole crop will be ruined.

So, growers had been fighting ‘hermies’ for a long time, but they didn’t immediately realize that the seeds that they got in their buds because of female pollen would grow into female plants only. Well, hermaphrodite plants to be exact. Meaning that they will mostly produce female buds, but also some pollen sacks whenever they experience too much stress.

Believe it or not, the very first batches of feminised seeds marketed by Dutch Passion in the early 90s were made exactly this way. The plants were stressed to the point that they hermied and then hermies-prone seeds were harvested and sold. No wonder that those initial barbaric methods gave feminized seeds a bad reputation and still make some purists use only regular beans. You can read more about ‘feminised seeds vs regular’ controversy in a separate post.

Feminized Seeds Without Hermies Are the New Norm

The time when ‘fems’ and ‘hermies’ were practically synonyms is long gone. Now, breeders produce feminised seeds in a totally different way. They use special chemicals for this. It could be gibberellic acid or silver thiosulfate or such a simple solution as colloidal silver water made with the use of a homemade 9V battery feminisation kit. Anyway, none of these techniques involves any stress. It means that the resulting seeds are no more prone to hermies than their regular counterparts.

There is even a special method to make sure that a plant you choose for making feminized seeds isn’t predisposed to hermies at all.

How to Select a Feminized Plant That Won’t Hermie?

It works like this. You take a bunch of regular seeds, grow plants from them, put them into the flowering mode, and when they reveal their sex, discard all males. As for the remaining females, you wait till they begin to flower in earnest and then start to stress them. You can doi it by constantly changing the light cycle: when today it’s 12/12, tomorrow — 18/6, then — 14/10, etc. All weaker genetics—when ‘punished’ this way—will turn hermies at some point. And the ones that stay female despite all the stress are definitely keepers. Meaning they are your best choice for feminized seeds production.

Do Feminized Seeds Produce Different Phenotypes?

Making seeds that always turn female and making seeds that grow into very uniform-looking plants are two completely different things. So, with feminized seeds, a breeder never guarantees that you will get only one pheno. The phenotipic variance can be as huge as with regular seeds. And if you want feminised seeds that don’t have different phenotypes, make sure that the breeder or reviewers describe the strain as stable.

So, we did our best to define feminized seeds’ meaning. Now let’s take a few moments to dispel some misconceptions that people have about this type of marijuana seeds.

Feminized vs Autoflowering

Some people, when they choose a strain, wonder what they should rather buy: feminized seeds or autoflowering. As if these were opposing terms. In fact, they are not. The confusion is understandable: seed shops offer seeds in two large categories:

feminized autoflowering seeds -> usually shortened to just ‘autoflowering seeds’,
feminized photoperiod seeds -> usually shortened to just ‘feminized seeds’.

The fact that the words not marked in bold are too often omitted has created this confusion. In fact, there are also regular autoflowering seeds and regular photoperiod seeds, but neither category is very popular. Most newbies don’t even see them when they shop for seeds. All they see are the words ‘feminized’ and ‘autoflowering’, and so they feel like they should choose either one or the other. The good thing is you can have both. Autoflowering feminized seeds produce only girls, and they all start to flower automatically.

This confusion aside, we’ve written a separate post discussing pros and cons of autoflowering vs non autoflowering seeds.

How to Tell Feminized from Non Feminized Seeds

Another misconception is that feminized seeds somehow look different than other types of seeds. Not by a long shot. A seed is a seed. It can be small or large, or it can look mature or immature, but, other than that, you can’t tell anything about the seed’s genetics by just looking at it.

It can be medical cannabis or hemp, sativa or indica, an auto strain or a photoperiod one, it can be a high THC or low THC variety, or CBD rich etc. and all of them will look just the same.

And if you insist on knowing what type of seeds you have—feminized or not—the only sure way is to wait till they flower.

Do Feminised Plants Produce Seeds?

If feminized seeds catch some pollen, they do produce seeds. After all, they are feminized, not castrated. The reason why people have seed-free harvest of buds from feminised seeds is because they don’t have any males in their grow room and no male pollen. But if you get some pollen inside your grow space (from outside or from hermies), your plants will get pollinated, no matter feminized or not. So, if you bought only fems and still your feminised plant has seeds, look for the source of pollen.

How to Grow Feminized Seeds

There is a whole group of questions from novice growers regarding germination and planting of feminised seeds, their grow time and flower time, light cycle, phenotypes and what not.

We’ve already said that feminized seeds look exactly like non-feminized. Well, they also grow the same and should get the same treatment as regular seeds. The only real difference is that you won’t have to cull the males when the plants in your garden show sex.

Maybe there is one more difference. If the breeder hasn’t done his job properly and his fem seeds genetics are unstable, the seeds will be more prone to become hermaphrodites. In this case, take extra care not to stress your feminized plants at any point of their life cycle. Other than that, take care of them just the normal way and you’ll be alright.

How to Make Feminized Seeds with Colloidal Silver

We were curious how easy it was to make feminized seeds with colloidal silver at home. So we ran a little experiment and got more than 1500 viable beans without any issues. You too can do the same and make a nice stash of female plant seeds for yourself by following these step-by-step instructions.

But let’s start with a bit of theory (you can skip this part and get down to business straightaway).

What are Feminized Seeds, and How are Seeds Feminized?

In nature, cannabis plants have two distinct sexes: male and female. However, only female plants produce buds for smoking. And if these buds catch some pollen, they will be subpar in quality because they will be full of seeds and not so big and also less resinous. That’s why growers who use regular seeds must watch their plants closely and cull all males in their garden as soon as they reveal their sex. Not very convenient, is it?

It all changed with the introduction of seeds that grow into fem plants in 99% of cases. They were named feminized seeds. So, are feminized seeds always female? In the majority of cases, yes, they are guaranteed to be female. However there are ways to make fem seeds hermie, meaning they will turn male or at least produce a few male flowers inside female buds. This can happen for seeds with weak genetics, or it can be a reaction to stress.

Male Plants no Longer Necessary

And this is exactly the feature that is used for manipulating feminised plants into producing feminised seeds. You don’t need any males for that. If you use a male to pollinate a plant grown from a fem seed, the result will be a bunch of regular seeds. And if you want fem seeds only, you should use one female plant as mother and another female plant as father. Or, alternatively, you can opt for self-pollination: when a single plant is used to both produce pollen and grow seeds.

There are several methods to make a feminised plant turn male. We won’t discuss here the most barbarian one — when breeders subject their plants to high levels of stress and they are turning hermie as a result. Although, believe it or not, the first commercially available seeds were made exactly this way, back in the early 1990s. You may guess the obvious drawback of such seeds: plants grown from them often become hermaphrodites even under normal conditions.

There is a less invasive method that modern breeders use. I’m talking about spraying a plant (or an individual branch of a plant) with a colloidal silver solution. This changes the chemistry inside the plant to make fem seeds male, and does so without any stress. As a result, we get seeds on a female weed plant without making them prone to hermies.

How to Make Feminized Seeds Using Colloidal Silver Spray

First, you need to make a colloidal silver generator and use it to produce the solution for your feminized seed spray. It’s unbelievably cheap, quick, and easy. Judge for yourself by clicking the link above and reading our step-by-step guide. The result should look more or less like this:

You should start using your feminised seed spray on a plant as soon as it starts flowering. You can apply it on all branches or just one. In the latter case, cover the rest from spatter. Please remember that silver is a toxic heavy metal and can poison you. You should never smoke colloidal silver weed.

It had taken us 4 weeks before we saw clearly that male flowers began to form. It was our first experiment, and we wasted many days applying the solution with a paintbrush. Don’t do that. It’s stupid. Just cover the rest of the plant with a piece of plastic and spray the chosen branch until it’s thoroughly wet. Do it once a day.

At some point, you’ll notice little green balls appear among female hairs (pistils): first closer to the top, then further down. Continue to apply colloidal silver spray until male ‘balls’ completely oust female pistils and start to look like a bunch of grapes. Only then you can stop spraying.

And this is how another branch on the same plant looks. It was not sprayed, so it only has female flowers:

After another month the male flowers will turn yellow and start to open:

Pollen Everywhere

Pollination is in full swing now, even if you don’t see the pollen. It consists of millions of tiny particles, and they fly everywhere.

Btw, pollinating buds at such a late stage of flowering is not the best idea. It would be better if the male pollen were ready a couple of weeks earlier, when the buds weren’t that mature. That would result in a) more seeds, b) less time spent, and c) better quality seeds. Well, we’re not sure about c), but some people on forums say it’s true.

When the branch with male flowers on it is fully mature, cut it, place it on a table, and rub it with your fingers until all yellow flowers fall off:

Then move the flowers this way and that with a credit card. The pollen will stick to the card’s edge. Shake it off into a separate heap:

To store and later use the pollen more conveniently, you can mix it with the equal amount of flour:

We put the mixture into an empty gelatin capsule and placed it in the refrigerator for storage..

Let me stress that we never used the pollen harvested this way to sprinkle on the plant. All pollination happened before we cut off the male branch. The seeds were fully mature 3 weeks after that. In this photo, you see only some of them. Later, we harvested at least as much.

How Soon Can You Plant Seeds After Harvesting Them?

We spent some time looking for an answer. People on forums say that the fresher the seeds, the lower germination rates. If you want to have good germination, give your homemade seeds some time to dry. Let’s say a month or two. It would be enough to degrade the hormone that prevents seeds from sprouting.

Our Experiments with Self-Pollinated Feminized Seeds

Over the next couple of years, we did a lot of experiments with our homemade seeds. The germination rates were always close to 100%, although, we must confess, we handled the process in a most off-hand manner. It’s understandable when the seeds cost you pennies.

We brought several plants to maturity and can say that they are very true copies of the parent plant. All fems, no hermies. All start to flower automatically after 2.5-3 weeks, all have the same height as the parent, the same length of the flowering period, the same structure of buds, and the same type of high. We liked the original plant, so we also liked its copies.

To Recap

Making your own feminized seeds is fairly easy. If you want to make copies of an autoflower, this is the only way. If you want to copy a photoperiod strain, it works great as well, but you also have the option of taking cuttings. Cloning marijuana is quicker, but seeds are easier to give away or sell. Believe us: with our little harvest of seeds. we’ve made a lot of people happy.