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how to germinate immature seeds

Cultivating males is important for breeders trying to cross new strains and genetics, but most people growing for buds will want to remove the males.

You can also minimize headaches and avoid the hassle of seed germination and sexing plants by starting with clones.

For the typical homegrower, it may be easier to obtain cannabis seeds rather than clones. Growing from seed can produce a stronger plant with more solid genetics.

Transplanting germinated cannabis seeds

Because they grow and flower quicker, growers can fit in multiple autoflower cannabis harvests into the span of one regular harvest.

These are referred to as “bagseeds” and whether or not you can grow one will depend on where it came from.

Through cloning, you can create a new harvest with exact replicas of your favorite plant. Because genetics are identical, a clone will give you a plant with the same characteristics as the mother, such as flavor, cannabinoid profile, yield, grow time, etc. So if you come across a specific strain or phenotype you really like, you might want to clone it to reproduce more buds that have the same effects and characteristics.

One drawback of clones is they need to be taken during the vegetative stage of a plant—flower is too late—so if you have a small setup with only one light, it can be hard to keep clones alive while flowering other plants, because the two need different amounts of light.

If you are looking to store the seeds and use them in next few months, all you must do is keep them in a dry and cool place without exposing them to light, preferably in its original package. But if you plan to use them after more than 2 years, you should consider refrigerating them.

Some growers like to ‘winterize’ the seeds before they start with the germination. Winterization is a process that happens naturally outdoors – as plants mature and they develop seeds that will enable the next generation to grow, they tend to fall off the dying plant and as winter comes, they are covered in snow and in low temperatures during the winter before starting a new life cycle in the spring. So to mimic that behavior, growers expose seeds to lower temperatures, usually putting them in the fridge for a couple of days prior to germination. It helps activate the hormones and enzymes that signal the plant that time for a nice start is coming.

The Vault Cannabis Seeds Store sell cannabis seeds as adult souvenirs, germination or cultivation of cannabis seeds is illegal in most countries including the UK. This guide is only for reference and educational purposes. We reserve the right to refuse to sell cannabis seeds to anyone we believe may intend to germinate in country where it is illegal to do so.

About George Seeds

Direct soil method

If stored correctly, cannabis seeds can ‘last’ for years, even decades but older seeds sometimes need a little help when it comes to germination. An old grower’s trick is to use a matchbox or something similar and line it with rough sandpaper. Once you’ve filled your box with sandpaper you place the seeds in the box and start to shake it for a minute or two. This will result in tiny cracks on the seed shell and will help the tap root to break the outer seed barrier.

Okay, now when you have good, healthy cannabis seeds, you are ready to start growing nice cannabis plants. First of all you have to germinate cannabis seeds and there are a few ways to do this. Let’s single out the best ways for proper germination and discuss every of these methods.

Germinating in a glass of water

Cypripedium macranthos is a lady's slipper orchid with high horticultural value. We document a reproducible protocol for asymbiotic seed germination based on a defined time frame. The optimum germination percentage was obtained from immature seeds collected at 6 weeks after pollination (WAP). At this time, the embryo reached the early globular stage. As seeds matured, the germination percentage declined sharply. Histological observation revealed that two distinct layers of seed coats enveloped the embryos tightly at maturity. The histochemical staining by Nile red and TBO indicated the presence of hydrophobic substance and phenolic compounds (e.g. lignin and cuticular material) in the seed coats. These features reflected the strong hydrophobic nature of seed coat that may cause the seed dormancy. Among the surveyed media, the modified Harvais medium was the optimum for germination. Among the surveyed organic supplements, potato homogenate (50 g l −1 ) or banana homogenate (25 or 50 g l −1 ) was suitable for the growth of seedlings.

Modified Harvais medium supplemented with potato or banana homogenates was suitable for the growth of seedlings.

The optimum germination was obtained as the immature seeds were collected at 6 weeks after pollination and sow on modified Harvais medium.


The histological and histochemical changes during seed development of C. macranthos were investigated in detail.

The accumulated hydrophobic materials, such as phenolic compounds in seed coats, contribute to the water-repellent nature.

The timing of seed collection plays a crucial role in asymbiotic seed germination of C. macranthos. Collecting immature seeds (the early globular stage; B) at 6 weeks after pollination could maximize the germination.