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grow weed without seeds

Finding a hermaphrodite in your growroom can happen at any stage of the flowering cycle and is indicated by the presence of male flowers growing on the same plant as female flowers. As with all species in nature this can occur in varying degrees. A plant can become slightly or majorly hermaphroditic. In cases where singular male flowers are found between the branch and stalk nodes, you should be diligently removing them as they grow. You must re-inspect the plant top to bottom every few days to be sure pollination and seeding doesn’t occur. If you find male flowers (anthers) actually growing from within the female flowers (buds) the situation is a little more dire. You can still remove all the male anatomy as it appears, but it will be harder to find and much more prevalent. This is a horrible discovery that leads to a tough decision: Should you let the plant live and risk the whole crop being ruined by seeds?

Why am I seeing seeds in the buds of my cannabis plants?

I have an indoor growroom and in my recent harvest I found seeds in the buds, but I’m sure there are no male plants in the room. I’ve heard that light leakage can cause plants to become hermaphrodites. Is this true, and if so, do you have any tips for avoiding this?

Cannabis plants are monecious. This means they have the ability to be either male or female. Or in the case of hermaphroditism, they can be both. The reason to make sure there are no males or hermaphrodites in your garden is because male flowers make pollen. When pollen touches the white hairs on a flower, it makes a seed, and seeded weed gives you headaches. Even though there are reasons in nature hermaphroditism could be important, such as continuing the species in case there is no male present, hermaphroditism is generally a bad thing when talking about cannabis plants.

Light poisoning is the most common cause for a normal plant to hermaphrodite. Light poisoning refers to the flowering night cycle of a plant being unnaturally interrupted with light. The best way to prevent this is to close yourself inside your darkened room during the daylight, and then after allowing a few minutes for your eyes to adjust to the dark, check for any light leaks from covered windows, door jams, etc. Also cover all timer and appliance lights with tape.

Negative stressors can combine with small interruptions of the light cycle to cause hermaphroditism, especially with less-stable, clone-only hybridized strains. When the night cycle is abnormally interrupted, it sends a mixed hormonal signal to the plant. This can cause a full female plant to throw some male flowers. Male flowers are easy to identify, especially when side by side with female flowers. Male flowers look like small bunches of bananas, which will take a week or two to swell before they burst and release their pollen.

Finding a hermaphrodite in your growroom can happen at any stage of the flowering cycle and is indicated by the presence of male flowers growing on the same plant as female flowers. As with all species in nature this can occur in varying degrees. A plant can become slightly or majorly hermaphroditic. In cases where singular male flowers are found between the branch and stalk nodes, you should be diligently removing them as they grow. You must re-inspect the plant top to bottom every few days to be sure pollination and seeding doesn’t occur. If you find male flowers (anthers) actually growing from within the female flowers (buds) the situation is a little more dire. You can still remove all the male anatomy as it appears, but it will be harder to find and much more prevalent. This is a horrible discovery that leads to a tough decision: Should you let the plant live and risk the whole crop being ruined by seeds?

In either case, once hermaphroditism has compromised the safety and purity of your sensimilla, the plant should not be propagated further. Remember, once a hermy, always a hermy. The plant pictured here is in the tenth and what should have been the final week of ripening, but a timer failed and one light stayed on continuously for almost two weeks, causing this vegetative regrowth. Because the light was continuous, the plant made no pollen. This method of re-vegging can be used to save a flowering plant you have no copies of, but be careful, as this may cause some strains to hermaphrodite.

Purposefully causing a plant to hermaphrodite is called selfing. Gibberellic acid or colloidal silver is typically sprayed onto the female plant. This technique is used to make feminized seeds and uses the plant’s ability to be both male and female to force a female plant to produce male flowers. The pollen contained in these male flowers can only produce female seeds. Just keep in mind that feminized plants should not be used for breeding, as they were produced without a true male, making them genetically inferior.

Grow weed without seeds
There surely are more methods available to you than the ones we’ll be covering in this article, and you may decide to combine different techniques to create your own methodology. Some Strainly users prefer starting from seeds only while others prefer starting from clones. Both options have their pros and cons.

Cloning cannabis: growing weed without seeds

Strainly‘s goal is to foster the preservation of cannabis phenotypes, which sometimes means, under the form of clones (or “cuts”). Clones are incredibly important to the facilitation of genetic preservation, but successfully cloning a cannabis plant requires following a few important steps, that we’ll try to cover in this article. The process of cloning can be a controversial one, as there is a variety of methods you can use. Rather than trying to reinvent the wheel, or simply paraphrase the already existing knowledge on the topic, we’ll try to aggregate a handful of the many available sources within this article, thus allowing you to get the basics, do your homework and plan your cloning project a bit before jumping in.

There surely are more methods available to you than the ones we’ll be covering in this article, and you may decide to combine different techniques to create your own methodology. Some Strainly users prefer starting from seeds only while others prefer starting from clones. Both options have their pros and cons.

Growing from clones: pros and cons

The main benefit from cloning marijuana is described as “having only female plants”. Unless you purposely chose to pick a clone from a male plant (for instance, for a future breeding project), this is true, with the caveat that a hermaphrodite mother plant may give you hermaphrodite clones that may turn into male plants. So if you decide to get your clones from a third party, ask about the mother plants (e.g. photos, details, etc.). Another advantage is that you will have identical plants (provided that all clones come from the same mother plants) that should grow and “behave” equally under the same growing conditions. Finally, one other significant advantage of growing from clones is the speed. Clones will grow into mature plants in less time than it is needed when germinating seeds.

On the other hand, you may be passing pest and diseases when starting from clones. When sourcing your clones from a third party, a thorough inspection of the clones is necessary to avoid contaminating your growing environment. Producing your clones implies keeping a separate room dedicated to maintaining the mother plant(s) in a vegetative state (more equipment, more energy consumption, more time).

What you will at least need

  • Scalper, razor blade or sharp scissors like the popular Fiskars
  • Starter cubes (rock wool; rapid rooters…)
  • Cloning gel or cloning powder
  • Rubbing alcohol
  • Lights adapted to clones, not too strong! (CFLs, T5 grow lights, LED are few popular examples)
  • A humidity dome for clones
  • A heating mat (optional)

How to

Below is a collection of videos we believe are providing appropriate guidance to successfully complete your first cloning project. Enjoy!

Jorge’s outdoor way…
The surgical way…
Got roots? Transplant!

And now what?

These are the basics of cloning. You should now be able to make your first clones and contribute to the preservation of a strain you like. However, reading and acquiring more in-depth knowledge about cloning and growing in general, will significantly increase your success rate. From free e-books to forums… and of course timeless classics, there’s a variety of sources you can learn from, it’s mainly a matter of time you can afford to dedicate to this learning process. Combining practice and theory is a sure way to become an expert so, give it a try, and another, and…