Feminised Cannabis Seeds Start With Hermaphrodites
There are several techniques to provoke cannabis plants into producing feminised cannabis seeds, in this case colloidal silver is used. Weed Liberator only treats a single bud with colloidal silver so the rest of the crop is still smokable. He has also kept a plant apart to pollinate with the pollen he collects. He explains that you can force hermaphroditism in a female cannabis plant by spraying bud(s) once or twice per day during the week before and the week after switching to the flowering stage. He uses a store-bought, 10mM colloidal silver solution called “Tiresias”, but you can also make a similar solution yourself.
In the case of Weed Liberator only a single plant is meant to be pollinated and produce feminised cannabis seeds. The rest of the crop is intended to produce seedless flowers, so a bit of segregation is due. In order to do this efficiently the author makes sure he gets to the hermaphroditic flower before it is fully ripe and the pollen sacs burst open. Instead of letting this happen in his flowering tent, he cuts off the nearly-ripe hermie flower and keeps it in a bottle of water for a week or so, much like you would with a bouquet of flowers. With a small amount of nutrients in the water, a cannabis “plant” can survive like this for up to two weeks. By propping the flower up above a paper plate, he is able to effortlessly collect pollen by simply waiting until it falls out.
Unfortunately the pollen collection part is not included, but this is not a very complicated process. To collect pollen, simply shake and tap a ripe male or hermaphroditic flower above a sheet of paper or disposable plate/bowl. Putting your male flowers in a paper bag and shaking it for a while is also an easy alternative. Pollen travels far and fast, so make sure to clean everything (including your clothes) properly to avoid accidental pollination.
Side Notes On Producing Feminised Cannabis Seeds
Weed Liberator stresses that while this will yield relatively good seeds if you pollinate with the same strain as your seed-bearing female plant, you should watch out with more exotic crosses. New crosses are a lot of fun but the newer a strain is, the less stable it will be.
Finally, we would like to add that feminised cannabis seeds are not the best source material for your “mother” plants. Pollinating feminised plants with female pollen will potentially increase the rate of hermaphroditism in the resulting cross. The best choice for breeding purposes are usually regular cannabis seeds, preferably from a highly stable strain. Most of our regular strains, like the Power Plant in the picture above, are inbred lines that are usually bought with breeding purposes in mind.
We hope this article has shed a bit more light on the exact workflow of producing feminised cannabis seeds and wish new breeders good luck developing their own strain!