Follow this quick guide on how to tell the difference between male and female cannabis plants to help you start growing big and beautiful buds right at home! Determining the sex of cannabis seeds. How to tell female from male weed seeds? Check it out! Sale of feminized cannabis seeds of all types, Autofem, feminized medicinal, and from the most important commercial banks …
How to Tell If A Cannabis Plant Is Male or Female
When it comes to growing cannabis, it truly is essential that you learn the difference between male and female cannabis plants. By learning this simple technique, you can easily decide what you want to pollinate and what you don’t.
Understanding Plant Reproductive Morphology
First, let’s take one step back to fully grasp why we need to separate cannabis plants by male and female in the first place. This is commonly referred to as the plant reproductive morphology, which is simply the study of the physical form and structure of a plant’s sexual reproduction parts.
While there are actually many complex forms of morphology, for the sake of keeping it simple, we’re only going to cover three of the most common ones.
This is a type of plant that forms both male and female parts on the same plant. Therefore, this plant will be able to reproduce on its own. However, in cannabis plants, you can discover a “hermied” plant by banana looking shoots, which form on the flowers. While this can be the genetics of the cannabis strain, it may also be an indication of the plant getting too stressed out. When a plant gets too stressed and fears it will die, it may begin to form male reproductive parts. This is to ensure that seeds can drop for its survival (keep reading for more info on detecting “hermied” cannabis plants).
For this type of plant, it will form both male and female reproductive parts. However, they will not be on the same flower as they are with hermaphrodite plants. Within monoecious plants, you will find one flower has female parts, while another has male parts. In cannabis, this is very uncommon to find. Actually, it’s only been reported a few times in history and something that we’ve never personally seen. If this were to happen, you would find one stalk with definitive male characteristics and other branches of the same plant with definitive female characteristics.
Now, with a dioecious plant, you will find that the plant either produces all male parts or all female parts. This means that no single plant can reproduce on its own. The female actually needs its male counterpart to continue producing seed for the following year. And, you guessed it, this is the category cannabis falls into and why you must separate your males from females. If you fail to separate them all, you will likely find that the male plants pollinated your females. Therefore, leaving you with a handful of buds chalked full of seeds.
How to Tell the Difference Between Male and Female Cannabis Plants
Now, with an understanding of the various sexual organs within cannabis plants, let’s get to the fun part – separating your lady friends from their male counterparts.
After the seeds have sprouted and the plants have had a chance to grow, it will be time to find out which ones you’ll be keeping to flower out and which ones you will be chopping down to avoid seeded buds.
Usually, when starting from seed, you will need to wait about four to six weeks before the male and female parts will be formed well enough for you to see the difference.
How to Tell Female from Male Weed Seeds?
Determining the sex of your cannabis plant is very important. Most growers require female plants because these are the ones that produce the resiny buds we love. Males, by comparison, simply produce the sacs of pollen used to pollinate female strains to produce seeds. Female varieties shouldn’t be pollinated. Otherwise, they will no longer produce their THC-laced resiny buds.
In a regular growing setup, males have to be removed as soon as they’ve spotted to reduce this risk of pollination. Otherwise, you run the gamble of turning your precious resiny buds into seeds and spoiling the whole crop. But can you tell the difference between weed seeds before they’re cultivated?
Can you tell male from female cannabis seeds?
Simply put, there is absolutely no way to tell the difference between male and female cannabis seeds before they’re planted. There is nothing in their appearance or size to indicate what will grow. The only way to tell is to grow it, wait and see.
You can, however, pick up feminized seeds directly from Weedseedsexpress to guarantee a female plant every time. Feminized seeds are bred exclusively to produce female plants. Knowing your seeds are female from the beginning is the perfect solution for hobbyists and smaller setups that can’t waste resources.
If you’d prefer to plant regular weed seeds, experiment and discover the sex of your plant as it grows, you can choose these here too.
Myths about determining the sex from the cannabis seeds’ appearance
There are plenty of myths out there on how to determine if a cannabis seed is male or female. Don’t be duped by them.
One of the most common is that female seeds have perfectly round crater-like impressions under them, just like a volcano. This is false. Crater-like impressions or indents can form on any and all seed varieties, no matter the sex.
Other myths include those pertaining to size and shape. Neither male nor female seeds are smaller or bigger than one another.
What’s more, some have speculated that male seeds are heavier, ragged or protruded, meaning that if you roll them on a table, they thump like a flat tyre. By comparison, it’s supposed that female seeds are smoother and therefore roll easily across a table. This is also false. Any seed can be any shape – it’s got nothing to do with sex.
Finally, there are no other indicators to tell the sex of cannabis seeds. No aroma, weight difference or coloration. If you find a chart indicating such methods of detection online, ignore it. This will prevent you from wasting time cultivating and accidentally pollinating your crops.
What can you do to tell male from female cannabis seeds?
The only way to sex your cannabis seeds is to sow, grow and check. Most female strains begin to show characteristics of their sex after 4 weeks or more, just before the first stage of flowering.
You have to wait out the vegetative stage until the hair-like pistils begin to grow from the stems. This is indicative of the pre-flowering stage and a sure-fire sign of a female plant.
By contrast, male plants show their signs much earlier. Male plants grow sacs within the crevices of stems which are filled with pollen. As soon as you notice these, it’s time to remove them from your crop to prevent pollination. Males typically grow these sacs in as little as 2 weeks, giving you plenty of time to react.
If you’re worried about your crops pollinating without you knowing, there are a few tricks you can use to identify sex early.
Instead of waiting it out and meticulously inspecting your plant, consider placing an opaque black or paper bag over a growing tip on your plant during vegetation. Keep the bag on for 12 hours in a 24-hour period and repeat. This manipulates the light cycle and forces the plant to pre-flower early. You can then check the sex of your plant after roughly 7 days before allowing it to revert.
There are also professional, scientific ways to determine the sex in advanced botanical setups, but aside from mailing off samples to labs, few can try this at home.
Alternatively, feminized seeds provide a more fool-proof strategy for cultivating healthy, resin-producing crops. You’ll have no need to sex your plants early and run no risk of accidentally pollinating your crop.
Feminized marijuana seeds
Feminized seeds are marijuana seeds that always come out female , due to the genetic modification that is done through the application of STS or another chemical treatment. In nature, cannabis seeds can come out both male and female, or even both sexes, and in that case they are called regular seeds .
Comparison of the best feminized seeds, which one to buy?
We have more than 200 feminized seeds, if you prefer to play it safe you can choose any of those listed in this comparison that will not disappoint you.
The feminized ones can be automatic flowering, they are the famous Autofem , which are also among the most demanded at the moment. Another type of very successful feminized cannabis seeds are medicinal ones, which can contain high levels of CBD, CBG, CBDV, or other cannabinoids with therapeutic properties.
What is the ideal seed for me? Buying guide
If you prefer to learn more why you need a specific type of seed, these options could be your solution:
If you want a lot of production, this is the place for you, productions can reach up to 1500 gr..
If you are a first time grower and want to make growing easy and simple, this selection of seeds is for you.
If you are looking for a happy, stimulating and psychoactive effect, here is the comparison with our recommendations..
Whether you are looking for a relaxing, introspective or narcotic effect, we have studied them and know that these will not let you down.
This selection of feminized blues will make your friends envious, try it and leave your colleagues speechless
La purple marijuana is in high demand by Pev-lovers for its preciousness, stop and let decorate your environment.
Do you like strong emotions? With our selection you will discover the most powerful of our catalog, do you dare?
In today’s society everything is rushed, if you want your crop as soon as possible choose one from this list.
If with the options we have offered you did not find the seed you are looking for, what you need is to browse our feminized seed filter, if you browse from your mobile you have the access below, but click on the next button.
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Advantages of feminized marijuana seeds
- thumb_upPracticality : Female marijuana is the one that produces the buds that are consumed, the one that forms that sticky layer of resin that contains most of the cannabinoids and terpenes of cannabis.
- thumb_upSavings : When all the female plants come out, you don’t have to grow more specimens than you need, because no male marijuana plants will come out. With the regular ones, you have to calculate twice as much to kill the same females.
- thumb_upWork : Can you imagine spending 1 month or more time watering, pruning, transplanting, checking, and caring for plants that you have to discard when sexing because they are male? That used to happen before, but with feminized seeds it no longer happens .
- thumb_upGenetics : Normally, feminized seeds come from the self-pollination of a champion clone, or from the crossing of 2 elite female clones , that is, from tested marijuana, unlike when a male intervenes.
- thumb_upSimplicity : For some people it is very easy to differentiate between female and male marijuana plants, but for inexperienced growers this can be a problem, which they will not have with feminized seeds.
- thumb_downFrost: They do not tolerate the cold very well and may even stop or even die.
- thumb_downGrowth: Slower than autos.
- thumb_downFlowering: Cannot flower except in total darkness.
- thumb_downHarvest: You can only have one harvest per season.
If you want to go a little deeper into this topic, I recommend that you read this article where we explain the differences between feminized and regular seeds , you will surely like it.
What are the best feminized seed banks?
Although the seed banks that most worked the marijuana strains to become feminized were Dutch Passion and Dinafem, currently there are several banks that have premium feminized cannabis genetics , and from our point of view these are the best:
How to know if a seed is feminized?
If you look at the feminized marijuana seeds, and compare them with the normal ones, you will see that they can be exactly the same , so it would be impossible to recognize the feminine seeds or differentiate them from the others.
The fastest way to know if a seed is feminized is to germinate and care for it until it reaches sexual maturity. Cannabis plants need between 25 and 50 days to show their sex, depending on their genetics and growing conditions. Once the plants are sexually mature they show their first pre-flowers , and at that time it is very easy to distinguish them, since the female flowers are like white hairs and the male ones are small balls.
Feminized or 100% female seeds should have all female flowers , otherwise, even if they were feminized, they would be hermaphrodite, intersex , and in some cases directly male.
How to make feminized marijuana seeds
There are different methods to obtain 100% female cannabis seeds , but the most widespread for its effectiveness is the STS technique. The application of silver thiosulfate (STS) sprayed on female marijuana plants inhibits the production of ethylene, and in this way these specimens show male sex and release fertile pollen, although their genetic information is still female (XX)
To obtain feminized seeds, this pollen must be used to pollinate other sexually stable female plants. By crossing 2 plants with female genetic information, all your offspring will be female as well . It must be emphasized that they have to be sexually stable, that is, females who under no stress change their sex, except with STS.
If you want to know more about how to feminize seeds or regular plants, in this blog post you will see much more information, including seeing the process step by step.
How to grow a feminized seed
It is actually easier to prepare a crop of feminized marijuana seeds than with normal ones, because by knowing the exact number of usable individuals you can calculate much better all the resources you will need, as well as adjust the times more precisely.
But in general the cultivation of feminized is very similar to that of other varieties of cannabis, except that perhaps you have to be more careful not to stress the plants . Below you can see the most important factors that you have to take into account indoors and outdoors:
Growing feminized seeds indoors
- filter_1Temperature : We know that the ideal temperature for growing marijuana indoors is about 24º C. with the light on and about 18º C. with the light off. This must be tried to keep it as stable as possible, because a higher or lower temperature range can cause stress. The maximum temperature should not exceed 30º C. and the minimum that never falls below 15º C. Higher or lower values can be dangerous.
- filter_2Humidity : During germination it has to be very high, above 90%. For the vegetative growth phase it can be between 60% and 80%, but during flowering the ideal is for it to be less than 50%, especially since the buds begin to form, which you have to try to lower it to the maximum. Low humidity during growth can lead to later hermaphroditism.
- filter_3Photoperiod : It goes without saying that for the vegetative cycle the ideal photoperiod is 18 hours of light and 6 of darkness, and for flowering 12/12. But it is important to know that the illuminated phase has to be constant, and that the darkness has to be total during the dark phase, without anything interrupting it. One of the biggest causes that some feminized seeds do not come out completely female is not respecting the darkness, especially during flowering.
- filter_4Nutrition : That one plant admits more food than another has nothing to do with whether it is feminized or normal. That is marked by its genetics and crop conditions, without more. But when feminized seeds are grown, be careful not to overfertilize, because this type of cannabis can be more stressful than the others.
How to grow feminized seeds outdoors
- filter_1Substrate : Try to have quality soil, even if you plant directly in the ground, it is good to make a hole and add specific substrate. A low quality soil, little oxygenated, or over fertilized, can cause root stress. If you grow in a pot, in addition to taking the above into account, try to perform the transplants correctly, it is not good to delay them, and you have to do them carefully so as not to damage the roots.
- filter_2Irrigation : Water stress can also end in the appearance of a few male flowers, and that is not what we want, so it is very important to respect the dry cycle between waterings, and not wait until the substrate has become very dry to to water. If the plant drops its leaves it means that it is suffering, and if it suffers it may end up being a hermaphrodite instead of a beautiful pure female.
- filter_3Space : If you transplant to mother earth, it is important that you leave enough space between plants, first so that no light is blocked between them, but also because it is not good that the roots enter into a dispute over the substrate, since it is another type of stress that can lead to hermaphroditism.
- filter_4Training : Feminized plants can be pruned and shaped like the rest of marijuana, but you have to try not to be a very aggressive training, that is why it is better to use LST techniques (Low stress training)
The best feminised sativa and indica seeds
Although the majority of feminized strains on the market are indica-dominant hybrids and polyhybrids, there are also a few pure feminized sativa seeds or sativa hybrids worth trying, and from our point of view, these are the best:
- done_allJamaican Lambsbread : The favorite marijuana of Bob Marley and many other smokers of the 70s and 80s. It can be grown indoors at 12/12 from seed, but where it shows its full potential is in outdoor crops.
- done_allPanama : This sativa is available in regular version or feminized seed, although it must be said that 100% feminized Panama seeds are more homogeneous than normal ones. It is fast and productive, with a very pleasant euphoric high.
- done_allDestroyer : This feminized hybrid combines 3 classic pure sativas, a Thai, a Mexican and a Colombian, and oddly enough, it remains at a manageable size and its flowering is not very long.
- done_allChocolate Thai : One of the few legendary sativas from the 70s that is still alive. The best effect that can be experienced, of the so-called “homeless”, is very stimulating, happy, and without relaxing descent. These sativa seeds are very well worked, they come out 100% female, and their cultivation is quick and easy.
- done_allMaui Wowie : The quintessential Hawaiian sativa, now in feminized seed for easy cultivation. It is the tastiest of all the genetics in this category, with a taste of tropical pineapple that everyone likes, and its effect is very psychoactive but always happy.
Due to their speed and ease of cultivation, feminized indica seeds are the best-selling today. It is not easy to find pure indica in feminized format , but there are hundreds or thousands of indica hybrids, and for us the most recommended are the following:
- done_allHashplant : A feminized indica with a truly devastating effect, the kind that leaves Ko. Its name comes from the fact that it is a special plant for extractions, since it produces a lot of resin and is large, in very fat buds.
- done_allPakistan Chitral Kush : Maintained in its pure state since it left Pakistan 5 decades ago, this feminized indica seed is special for lovers of colorful plants and the relaxing effect.
- done_allAfghani # 1 : This is a genetic improvement work on a pure indica variety from northern Afghanistan. It has been offered in the Sensi Seeds catalog for 30 years, and it is always one of the best sellers for its speed, production, resistance, and flavor.
- done_allNorthern Lights : The longest-lived indica hybrid, used to create thousands of new polyhybrids, and still ranks high on the top. One of the secrets of its success is its ability to mass produce a beast in the shortest time.
- done_allHindu Kush : This variety was found by the hippies of the Himalayan mountains and later it was worked on the west coast of the USA for many years. Less compact in structure than other indica, its relaxing effect is pure natural medicine for body and mind, and its flavor is the preferred flavor for many.
question_answer Frequently asked questions about feminized seeds
What are feminized seeds?
They are marijuana seeds that are obtained from plants that have previously been treated with STS, colloidal silver, or other products , so that females can produce female pollen that is later applied on other females to produce seeds that contain only female genetic information. . From these seeds only plants of female sex come out, although in many cases a small percentage of the offspring can be hermaphroditic or directly male.
When are feminized seeds planted?
In indoor cultivation they can be planted at any time, because being able to regulate the photoperiod allows us to control the growth time, and that the plants begin to bloom when we are most interested. On the other hand, in outdoor crops we do have to take into account the time of germination and planting of the seeds, and they are usually put in spring . Sativa varieties can be planted later than indica, because they start to flower later and their flowering is longer, so they end up making up for the time difference.
What does photoperiod mean when we talk about cannabis seeds?
The word photoperiod means “light time” and when applied to cannabis seeds it refers to varieties that depend on light and dark times to grow or flower. Photodependent varieties are based on the number of hours of light and darkness to know if it is time to grow or flower, unlike autoflowering varieties, which do not intercede and start flowering automatically as soon as they reach sexual maturity. .
How long does a feminized seed take?
That depends on your genetics, a fast flowering feminized is not the same as an indica feminized or feminized sativa. The growth time does not change much in this regard, but the flowering period can vary significantly from one feminized seed to another. The “Fast version” varieties are the fastest in the photodependent category, followed by indica, then hybrids, and finally sativas, which are the ones that take the longest to grow. It can be said that on average the flowering of feminized seeds is 9 weeks , to which must be added the vegetative growth time, which is usually one month, so the total cycle would be around 13 weeks per general norm.