How to Germinate Cannabis Seeds in Water?

Cannabis seeds are relatively easy to germinate, and germinating them in water is a popular method. Here’s a step-by-step guide on how to do it.

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1.Why germinate in water?

Water is a great way to start your germination process because it is easily accessible and provides the perfect environment for your cannabis seeds. By germinating in water, you are essentially giving your seeds the perfect amount of moisture they need to break out of their hard outer shell and begin growing.

There are several reasons why water is the best method for germinating cannabis seeds:

It is easy to control the amount of moisture that your seeds are exposed to.
You can easily monitor the progress of your seeds as they germinate.
Water helps to protect your seeds from environmental fluctuations that can damage or delay germination.
Cannabis seeds have a natural protective coating that needs to be broken down before they can begin growing. Water helps to break down this coating and allows your seed to take in the moisture it needs to start growing.

2.What you need

-Cannabis seeds
-Paper towel Methodist
-Clean container with a lid
-Room temperature water.

3.Step by step guide

1.Get a container that is big enough to comfortably fit all your seeds and fill it with distilled water
2.Put your cannabis seeds in the container of water
3.Leave the seeds in the water for 24 hours
4.After 24 hours, remove the cannabis seeds from the water and place them on a paper towel to dry off
5.Once the cannabis seeds are dry, you can plant them

4.Advantages of germinating in water

Water germination has a few advantages over other methods. One is that it’s very forgiving, meaning that if you make a mistake, it’s easy to correct. Additionally, water lends itself well to pre-soaking your seeds, which can give them a boost by softening the shell.

Of course, there are a few disadvantages to germinating in water as well. One is that if you’re not careful, your seeds can drown. Additionally, you have to be extra careful about mold and bacteria when germinating in water.

5.Disadvantages of germinating in water

There are certain disadvantages of germinating your seeds in water that you should be aware of before you start. One is that it can be difficult to control the temperature of the water, which can impact seed germination rates. Additionally, if the water is too cold, it can shock the seeds and prevent them from germinating at all. Finally, it can be tricky to keep the water at a constant level of moisture, which can also impact germination rates.

6.How to store your germinated seeds

After your seeds have germinated and developed their first roots, it’s time to store them in a safe place. The best way to do this is to plant them in soil.

If you can’t plant them right away, you can store them in a cup of water. Be sure to change the water every few days to prevent the roots from getting too wet. Once the roots are about an inch long, you can plant them in soil.


Even if you do everything right, it’s possible that your seeds won’t germinate. Don’t worry, it happens to everyone at some point. The most common reason for seeds not germinating is that they were not properly stored before you started the germination process. Seeds that are too old or have been damaged by heat or light are less likely to germinate.

If your seeds have been properly stored, the next most likely reason for failure is that the water you’re using is too cold. Seeds won’t germinate in water that is below 68 degrees Fahrenheit (20 degrees Celsius). If you’re using tap water, let it sit out overnight so it has a chance to reach room temperature before you use it.

It’s also possible that your seeds have been contaminated with fungicides or other chemicals. If you suspect this is the case, try soaking the seeds in a weak solution of hydrogen peroxide (3% hydrogen peroxide mixed with 97% water) for 24 hours before starting the germination process.

If all else fails, you can try sprouting your seeds in paper towels instead of water.

8.Frequently Asked Questions

How long does it take for a cannabis seed to germinate in water?
It can take anywhere from 12 hours to 48 hours for a cannabis seed to germinate in water. The time it takes will depend on the quality of the seed, the temperature of the water, and other factors.

What is the ideal temperature for germinating cannabis seeds in water?
The ideal temperature for germinating cannabis seeds in water is between 70-85 degrees Fahrenheit (21-29 degrees Celsius).

What is the best way to aerate the water when germinating cannabis seeds?
One way to aerate the water when germinating cannabis seeds is to use an aquarium air pump. Another way is to simply pour the water back and forth between two containers a few times each day.

Is it necessary to remove the seed shell when germinating cannabis seeds in water?
It is not necessary to remove the seed shell when germinating cannabis seeds in water. However, many people find that it helps speed up the process.

9.Alternatives to germinating in water

9.Alternatives to germinating in water

Some growers prefer not to use water when germinating their cannabis seeds. Water can introduce mold and mildew into your grow environment, so it is understandable why some growers want to avoid it. Here are some alternative methods for germinating your seeds:

Paper towel method:

1. Place your cannabis seeds on a paper towel.
2. Fold the paper towel so that it covers the seeds completely.
3. Place the paper towel in a dish or container.
4. Add water to the dish or container until the paper towel is saturated but not dripping wet.
5. Place the dish or container in a warm, dark place.
6. Check on the paper towel regularly, adding more water as needed to keep it moist but not wet.
7. Once your seeds have germinated, plant them in soil immediately.

Pyrex dish method:
1. Preheat your oven to 200 degrees Fahrenheit (93 degrees Celsius). Line a baking sheet with parchment paper and set a Pyrex dish on top of it (this will prevent the Pyrex dish from cracking when exposed to sudden temperature changes). Pour about an inch of water into the Pyrex dish and set it aside while you preheat your oven. Once your oven is at the correct temperature, carefully place the Pyrex dish of water inside and let it warm up for about 10 minutes before proceeding to the next step. Keep an eye on it to make sure that the water doesn’t start boiling – if it does, turn down the heat slightly and let it continue warming up until it reaches 200 degrees Fahrenheit (93 degrees Celsius). 2.) Place your cannabis seeds in thePyrex dish of warm water and let them soak for 24-48 hours, making sure that they are fully submerged at all times (you may need to add more warm water as time goes on). 3.) After 24-48 hours have passed, remove your cannabis seeds from the water and plant them immediately in soil


To conclude, germinating cannabis seeds in water is definitely possible and can be done relatively easily with the right method and supplies. By following the steps laid out in this article, you’ll be well on your way to successfully germinating your own cannabis seeds in water. Just remember to have patience, as germination can sometimes take a few days. Happy growing!

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