Growing Weed

How to Germinate Marijuana Seeds

Marijuana has been popular all around the world for thousands of years. Their seeds actually germinate in 3-7 days. Some others may take between 10 and 15 days for this. There are some factors needed to be controlled for marijuana seeds to sprout such as light, temperature, and humidity/moisture. Let’s take a look at this article to learn how to germinate marijuana seeds.

Use a Moist Paper Towel

Obtain necessary materials

In this way, you will use basic items you can look for around your house. In addition, you still have to buy distilled water and PH test strips.

These basic items include feminized cannabis seeds, 2 clean dinner plates, 1-2 gallons of distilled water, 1 roll of paper towels, PH test kit, a warm place to store seeds, good potting soil, lightweight fluorescent lights, seed tray or plastic cups, and grow light timer.

Soak seeds in distilled water for 24 hours

Use the container to soak the seeds. Fill it with tap water. It’s important to keep it sitting in the open for about 2 days to evaporate the chlorine. Also, you can buy distilled water from a grocery store.

The PH of the water should be from 5.8 to 6.5. This PH is ideal to ensure the right germination. In order to help the seeds sink, give them a little tap with the tweezers.

Two sheets of paper towels should be laid over a dinner plate

 You need to use distilled water under the temperature of your room in order to moisten the paper towels.

Hold marijuana seeds in the center of moist paper towel

You can remove seeds from water by using tweezers. Then, use 2 additional moist paper towel sheets to cover them. Next, put the paper towels and seeds under a second dinner plate in order to keep them warm.

We recommend you to keep your seeds at the temperature between 70 and 90 degrees Fahrenheit so they can germinate. Don’t forget to check seeds as well as paper towels regularly.

Plant your germinated seeds

You need to observe a small white taproot from the end of the seeds after 5-6 days. Use good potting soil to fill a plastic cup or a tray until saturated.

A spray bottle should be used to make sure the soil is moist, while it is not inundated. Normally, a sprout lasts within 4-6 days. And, seedling should have leaves after about 2 weeks.

Seed tray or plastic cup should be set with seedlings under a fluorescent. And, the grow light needs to be set to a 24 hour light cycle.

It normally takes 24 hours to germinate seeds. However, this process may be reduced to 16 hours.

Start Seeds in Rockwool Cubes

Obtain necessary materials

This method is actually better at retaining water compared to paper towels. It allows you to maintain a constant PH. Moreover, it’s easier to transplant after sprouting as well.

The essential materials include feminized cannabis seeds, small pointed object, set of 1 inch Rockwool plastic or metal tweezers, tweezers, waterproof tray, pH test kit, a warm place to store seeds, pH balancing chemicals, good potting soil, lightweight fluorescent lights, and grow light timer.

Stabilize and hydrate Rockwool cubes

There is an alkaline pH of 7.8 found in Rockwool. This is too high for marijuana seeds. You need to use distilled water to fill a bowl. Also, you can fill it with tap water. Then, measure pH of water with test strips.

Prepare Rockwool cubes for seeds

Use a waterproof tray to place soaked cubes in. The fact is that there are some preformed holes found in some cubes. Most importantly, the hole must be wide enough to fit the seed.

One cannabis seed needs to be placed in each hole. You have to use a toothpick in order to gently push it down. Then, use a small piece of Rockwool to cover the hole. This purposes to create a dark environment.

Use a clear plastic dome to cover tray

This step is to maintain a humid environment. The tray that is covered should be put with cubes 2-3 inches under the fluorescent tube. And, the lights should be left on 2 days.

Transplant sprouted seeds

The roots should start to poke out of the Rockwool cube after 2-3 weeks. It’s a great idea to transplant your seedling before they start to tangle. When you cut a ¼ inch wide by 1-inch deep hole, you need to be careful in order not to touch or damage the roots.

Plant Cannabis Seeds in Soil

Germinate cannabis directly in soil

This method is beneficial because it can help to decrease the risk of damaging the plant after transplanting as a seedling. You can invest in a propagation kit. Also, you can create your own. There are some essential things, including feminized cannabis seeds, waterproof tray, small peat cups, thermometer, 402 fluorescent grow light, Saran wrap, pH balanced water, and pH test strips.

Choose the right potting soil

Look for an entirely organic soil mix like Sunshine Mix. Remember to check the bag so you can choose the pH between 5.5 and 7. If you want, you can also choose pearlite separately and mix it in.

Also, you can buy a mycorrhizae mixture to add to the soil. This mixture is a great option for plant root growth.

Use soil mix and plant marijuana seeds to fill peat cups

You need to make a small 0.75cm deep hole in the center of the cup. Use your finger to do this. Then, sow a single marijuana seed in the hole. Next, cover it with soil.

Remember to put peace cups in waterproof tray. Prepare a spray bottle. Then, fill it with the pH-balanced water from 5.5 to 6.5. Once you see the water seeping out of the cups, it’s time to stop watering immediately.

It’s important to check soil 2-3 times per day in order to ensure to keep it moist. And, spray with pH-balanced water when necessary.

Monitor the environment

There are some environmental factors that can affect cannabis germination and growth such as moisture, insects, temperature, ultraviolet radiation, and bacteria, as well as fungi.

Set a thermometer near the peat cups. Place it under the saran wrap dome. It’s best to germinate your cannabis seeds at the temperature of 90 degrees Fahrenheit. Once they have left, the temperature can be reduced between 70 and 80 degrees Fahrenheit.

If there are insects, you need to use your hands to remove them in order to prevent an infestation.


We’ve just guided you on how to germinate cannabis seeds. Sure, you are ready to start growing your own cannabis. Keep in mind it’s important to provide your plants with water, light, and foods if needed. Also, don’t forget to keep the environment at the right temperature and humidity. Besides, it’s important to avoid so many problems. To do that, you need to maintain the right parameters. Last, we just want to recommend you to label your seeds, clones, and seedling to avoid confusion.