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growing marijuana from bag seeds

If growing male and female cannabis seeds, they’ll start to show their sex organs, or “pre-flowers,” after 8-10 weeks from germination.

Seeds for these varieties are now widely available online and through dispensaries. It should be noted, however, that any plant grown from these seeds is not guaranteed to produce high levels of CBD, as it takes many years to create a seed line that produces consistent results. A grower looking to produce cannabis with a certain THC to CBD ratio will need to grow from a tested and proven clone or seed.

Cannabis plant sex organs appear on nodes, the points where branches grow off from the main stalk.

Transplanting germinated cannabis seeds

Also, buying from a reputable breeder or seed bank will give you a sense of what a particular strain will look and smell like, how it will grow, and how much it will yield at harvest.

Make sure the area the seeds are in is warm, somewhere between 70-85°F.

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.

Additionally, every long-time grower will tell you that clones degrade over time.

It does happen: Someone hands you a bag of seeds of “some great weed” for you to grow. You’re happy since you just saved some cash on seeds. The problem is, you don’t know what type of cannabis the seeds are, whether it’s sativa, indica, autoflowers, etc. We’re already off to a pretty bad start.

This is what cannabis seeds need to sprout:


The most reliable way to determine harvest time is to check the colour of the tiny, mushroom-like trichomes on your buds. For this, you’ll need a loupe or a microscope. Take a good look!

As an alternative to plastic pots, you can also use fabric pots (smart pots) or air pots. If you want to learn more about the different pots used to grow cannabis, check our article on the subject.

Especially when growing indoors, not having proper ventilation can lead to a host of maladies, including mould. For small grows, a simple standing fan blowing a mild breeze across your plants can be enough, whereas larger grow operations require sufficient outfitting to ensure air is constantly flowing and doesn’t become stagnant.

With bag seed, there is a high chance that time and effort goes to waste, so that is definitely something you need to consider carefully.

And even though it may take a few tries, once you’ve got a great plant from your bag seed, you can then clone it. Now you no longer need to worry about the risk of wasting your time caring for male plants or hermies.

What Kind Of Bag Seeds Are Best?

That’s where cloning comes in.

In that case, the simpler your grow setup, the more sense it makes to use bag seed.

Use a razor to cut the branches. Scissors tend to crush the branch, which is not ideal. If you use a pair of shears or scissors, make sure they are sharp enough to cut, without crushing.