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Germinating cannabis seed in tap water

Can I germinate seeds in purified water?

Any water would work for germinating as long as soil or what ever is moist, high humidity and ambient temps seeds will pop.

And darkness forgot to add that one

hotshotisdashit
Well-Known Member
az2000
Well-Known Member

Which MG soil do you have? The Organic Choice appears to be ok, but I would add about 40% perlite. (I don’t recommend MG soils. But, if you have it already it should be ok. It’s the drainage, airyness which is important, IMO.

Richard Drysift
Well-Known Member

Doesn’t matter as long as it is 2 parts hydrogen & 1 part oxygen it should work. I use tap water for clones & seedlings but once they get into my organic soil they get only RO, distilled, or rain water as my system has high levels of chloramine & other stuff like fluoride that will kill the microbial life.
For seedlings or clones you don’t even have to leave the water out because chlorine doesn’t affect the plants it affects the little critters living in your soil. This is why many are forced to use nutrients because city tap water containing chlorine & other compounds AND even synthetic nutrients themselves can kill off microbes living in the soil.

Richard Drysift
Well-Known Member

I think I have the wrong soil I have miracle grow should I get sum thing organic? I can’t find fox farm at any stores I go to

Yes they don’t sell FF at Home Depot. Almost all of the soils sold at HD or lowes has those shitty time released pellets that suck for growing MJ. If you’ve got plant in it already just let them go for now until transplant but yes go get a big bag of good organic soil like FFOF, happy frog, roots organic, sunshine mix #4 etc etc all better choices than MG soil. Find a grow store or go online.

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Madagascar
Well-Known Member
az2000
Well-Known Member

I mix tap and RO water to get 150ppm. I then mix 1 part hydrogen peroxide to 2 parts water to get 1% peroxide. I shake my seeds in a matchbox lined with fine sandpaper (for 30 seconds) and soak in this dilute peroxide.

I’m no longer a fan of soaking until they crack. I intend to soak 4-8 hours and then place in Rapid Rooter plugs (upside down, not the stem hole already present, but poke my own seed-size hole in the other end) and bury this flush in the soil.

I like peroxide because it disinfects, and precipitates oxygen bubbles which adhere to the seed, keep it floating to the surface (less risk of drowning). I like the idea of soaking to get the process going. But, I’m thinking that waiting 24 hours is too long, serves no purpose, etc.

I like to go into RR plugs instead of the soil itself because they have a more uniform texture, drainage.

How to germinate cannabis seeds in water

There are many methods of germinating cannabis seeds. Some are less risky and less complicated than others, so choosing the right approach is very important. In this article, we will look at a simple and effective method – germination in a glass of water.

What do weed seeds need to germinate?

Water, heat and air (oxygen) are all that cannabis seeds need to come out of dormancy and sprout. Fertilizer, special hormones, and secret supplements are not necessary as Mother Nature provides the seeds with a stored food supply to usher them through the germination. Strong, viable seeds germinate in two to seven days. As the seed germinates, the seed’s protective shell splits open and a tiny white rootlet (taproot) pops out.

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Germinating Weed Seeds in Water – Step by Step Guide

Germinating pot seeds in water is very simple and effective method that is highly recommended by FastBuds Seeds Company. This method is especially effective for seeds with a harder shell or older seeds. Here are all the steps for germinating pot seeds in water:

  1. Get a glass of water.
    You can use tap water or distilled water, whichever one you prefer. Just make sure to leave the glass of water at room temperature first. Do not use hot or cold water. Hot water can easily damage your seeds. Ideal temperature is around 21-26 C.
  2. Place the seeds in the glass.
    At first, seeds will often float on the surface. They should sink to the bottom of the container after a couple of hours. Soaking ensures that water penetrates the protective shell to activate growth hormones.
  3. Place the glass in a dark warm place and let the seeds soak.
    After a couple of days, you should see the radicle. Remember that some seeds may need longer until you see the radicle coming out. If they have not sprouted after 72 hours, add a few drops of hydrogen peroxide to kill accumulated bacteria in the water and return to the darkness for 2 more days.
  4. Plant your germinated seeds.
    When the taproot is around 2-3mm long, carefully get seeds out of the glass and plant them in soil. Make a 0.5-1cm deep hole in the soil, place your seed root pointing down and cover it with more soil. Lightly spray the area.

As you can see, germinating weed seeds in water is a super simple process. Now that you know the basics of germinating cannabis seeds in water it’s time to buy a few seeds and try out the process yourself. If you’re looking for high-quality seeds, head on over to Herbies where you can find viable, vigorous, and fast-growing seeds from a variety of seedbanks from around the world.

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What kind of water should I use for cannabis seeds germination?

While you can always use tap water to germinate your seeds, using distilled or purified water can help you avoid any harmful substances that may be found in tap water, such as heavy minerals.

For how long do you leave cannabis seeds in water to germinate?

Usually it takes around 72 hours for the seeds to germinate. If the seeds haven’t sprouted in that time, you can add a few drops of hydrogen peroxide and leave them for another 2 days.

Can I germinate autoflower cannabis seeds in water?

Absolutely, you can. No matter what type of seeds you’ve purchased the germination process will be the same.

What if pot seeds float in water during germination?

Seeds that sink by soaking in water are generally considered as viable seeds, and those that don’t sink even after 24 hours of soaking are probably dead and hollow on the inside.

What water pH is best for the germination of weed seeds?

The perfect pH for cannabis seed germination is between 5.5-6.0.

Should I use hydrogen peroxide in water to germinate pot seeds?

According to recent studies, hydrogen peroxide solution is thought to increase germination rates and is therefore considered an effective medium for germination. Sprouting your seeds in a glass of water with a tablespoon of hydrogen peroxide mixed in can help sprout the seeds more efficiently as the solution breaks down the seed coat and allows more oxygen to get inside.

Should I use fertilizers or special hormones to germinate marijuana seeds in water?

Using special hormones or fertilizers to germinate weed seeds in water is not necessary.