If you are not working on a breeding project and your goal is to grow as many female plants as possible, then using feminized seeds or clones is the most practical route to take.
• Working with clones is an excellent way to grow something that has already been verified. Usually, highly desirable clones can be vouched for by another grower or will have lots of information to research online.
The only sure way to determine sex before your plants reach maturity is to c lone the plant. T his could be achieved by taking a clone from any plant.
• Large scale Sea of Green operations can be set up, without the need to worry about any male plants. This means the crop will not be cross-contaminated with pollen and become seeded and commercial useless.
Sexing cannabis plants is really just finding out whether they are male or female, this can be very important for various reasons, ranging from a breeding project to extensive phenotype hunting. Knowing how and when to tell if your plants are male or female will give you an advantage when growing indoors.
After your plants grow to the 6th or 7th internode, you will be able to identify by eye potential male or female traits.
In this article, we explain how to tell the sex of your Cannabis plants, what traits to look for, and what can go wrong.
If you are interested in autoflowering marijuana varieties, you have probably noticed that all commercially available seeds are not only autoflowering, but feminized as well. Often referred to as “autofem” varieties, these fast-flowering plants not only provide an easy grow for beginning green-thumbs; they are fast flowering, there’s no danger of messing up your flowering cycle with lighting accidents, and there’s no need to sort male plants from female plants. What feminized seeds also do – autoflowering or not – is ensure that customers will be back for more seeds.
So, we come to the question – are there male autoflowering plants? How are breeders getting more seeds, if all they seem to have are autofem seeds? The answer is that yes, male autoflowering plants most certainly do exist, and you will see them if you do some breeding for yourself. See out earlier post on the topic, and you’ll see the mother plant, a cross of a male “Double Gum” pant and the “Royal Automatic” from Royal Queen Seeds. We’ve recently grown a few of these seeds, and have some that aren’t autoflowering (and as of yet of undetermined sex), as well as two female autoflowering plants and one male.
By collecting pollen from the male (pictured above), and carrying over his autoflowering tendency to another generation – by fertilizing a female AutoBlueberry plant – we’ll get a batch of seeds that should have a preponderance of autoflowering plants. Among these will be males, of course, who will have even more stable autoflowering tendencies, and we can continue to breed our own autoflowering seeds. You can do this too – it’s not rocket science! You may not always get plants that produce the most amazing buds around, but they will be your babies. And like any good parent, you’ll love them, however ugly they may be!
You can’t hold anything against seed banks/breeders for wanting customers to come back and buy more seeds (as long as they keep prices reasonable), but wouldn’t it be convenient to harvest a few seeds along with your cannabis crop, and have the next round of plants ready to go without the added expense of ordering more seeds? [Growers who propagate new pants from clones off of a mother plant may well know that you can’t clone an autoflowering plant, making seeds a necessity for autoflowering weed growers!]
[For many, many more grow tips and info about marijuana cultivation, read author Glenn Panik’s “How To Grow Cannabis At Home: A Guide To Indoor Medical Marijuana Growing” – A vailable on iTunes here, for the Amazon Kindle or via Smashwords (for all E-Reader Formats, PDF included) here. You can also order the ‘stealth title’ of our information-packed ebook for the Kindle here.]
Cannabis is one of the few plant species that have two plant sexes each different from another. In most cases all the regular plants that we know can be male or female and have no features that show their sex but cannabis plants are different in this matter as both sexes show different characteristics that can be easily separated.
cannabis male pre-flower closu up shot
In other case if you are going for autoflower cannabis seed production and are trying to get as much seeds as possible you can collect the male pollen and dust it directly on to female flowers to maximize seed growth. In this case you will let the male plant stay in the room for the fist month or so and then remove it because ruderalis plants need at least 20 to 30 days to fully mature they’re seeds and if male pollen gets into female flowers 10 to 20 days before harvest the seeds will be immature and a waste of plants energy so all the older seeds would not get all the energy they need to properly ripen.
Regular autoflowering cannabis seeds will produce plants that have 50% chance of being a males or females and there can be variations to this percentage but if you grow large enough sample size it will become closer and closer to the 50/50 of male and female ratio. There are some studies that show that environmental factor can influence cannabis plant sex and usually stressed plants tend to turn into males but it is not scientifically proven why this happens and in fact it is nothing more than an observation. Many growers say that they have a larger % of males if plants get exposed to any kind of a stress (heat, nutrients, humidity) but that also has not been proven.
Autoflowering cannabis shows its sex 2 to 3 weeks after sprouting from seed but male plants tend to show themselves a little earlier than females. Males are usually a bit taller, with less leaves and the branches are further away from each other but sometimes none of these conditions are true and male autoflowering plants look exactly like female plants till they show their sex.