Best Soil for Cannabis Plants
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Soil plays a vital role in the growth of cannabis. Using the best soil for cannabis will determine a good harvest or a bad one. Beginners are often confused in selecting the type of soil for growing marijuana. A single mistake in choosing soil will give you a completely bad experience. So, we will further discuss the best soil to grow marijuana indoors and outdoors.

Important Factors Of Good Soil To grow Marijuana

To grow the best quality of weed, you must choose the soil with the proper amount of variables. They are as under:

  • The soil should hold ample water in itself.
  • Proper drainage
  • The soil should have the appropriate ratio of nitrogen to phosphorus
  • Soil having a pH level of 6
  • It should have the proper balance of fungus to bacteria.

Proper Soil pH For Cannabis

pH is nothing but the amount of hydrogen in the soil. It is used to define the acidity of the liquid. For growing weed, the soil with a pH between 5.8 and 6.3 can serve the purpose well. The best pH is 6 for the growth of cannabis.

You can test the pH of the soil with the help of soil pH tester. It will give you accurate results.

Best Soil for Cannabis

Good Soil For Growing Cannabis Outdoors

When it comes to growing marijuana outdoors, you should choose the soil of 3 types. They include loamy, sandy and clay. You can make the combination of any of these soil types to grow weed in your garden or backyard.

After choosing a good type of soil for Cannabis, you should know the different ratios of nutrients. To get a good marijuana harvest, you must dig a hole of 3 feet in depth and 3 feet wide. You have to then fill the hole with organic super soil which will further give a tall marijuana plant.

The next option is to grow cannabis in the pot or bucket. Fill the pot with organic super soil. Then you need to maintain the balance of factors such as humidity, pests, temperature, sunlight, and rainfall.

Planting weed in a pot or bucket is a better option as you can move it from one place to another.

Good Soil For Growing Cannabis Indoors

If you want to grow marijuana indoors, the good soil types are organic super soil and 420 fertilizer mix. Organic super soil has a proper balance of nutrients such as phosphorus, carbon, and nitrogen. You can also add 420 fertilizer mix in this soil for a tall marijuana plant.

It is better to purchase the soil and not to make it yourself. This is a useful tip for beginners.

Ideal Potting Soil For Cannabis

If you are choosing the pot to grow weed, select the soil free from slow-release chemical nutrients. We have listed the best organic soils for cannabis which are as follows:

Black Gold soil

This is a good type of soil for cannabis. It has the perfect combination of nutrients such as earthworm castings, compost, peat moss, and perlite. These nutrients will give a taller and stronger marijuana plant.

Kind Soil Hot Soil

Fox Farm Soil

The next on the list of good potting soil is Fox Farm soil. Ocean Forest mix is perfect for growing marijuana in the pot. It has a mixture of the following nutrients:

  • Sandy Loam
  • Crab meal
  • Bat Guano
  • Oyster shell
  • Norwegian Kelp
  • Sea-going fish emulsion
  • Shrimp Meal
  • Composted forest humus
  • Granite Dust
  • Worm castings
  • Sphagnum peat moss


Which is the best soil for Auto-flowering Cannabis?

Sunlight is the main factor to get a good flower in the plant. Generally, the sunlight of 12 to 15 hours is needed for the proper growth of cannabis outdoors. On the other hand, the sunlight of 18 hours is good for Cannabis grown indoors. And if you can’t get that much natural sunlights, then check out our review on the best grow lights.

Airy soil and more sunlight are 2 major factors for auto-flowering cannabis. You can add nutrients such as compost, peat moss, vermiculite and wet perlite in 2 to 3 parts for the better quality of weed.

Making Own Organic Super Soil

The best soil for cannabis is your own organic super soil. You will need nutrients such as dry leaves, nitrogen and bone meal. In addition to this, you can make your 420 fertilizer to add in the soils above.

Best Potting Soil for Cannabis

Conclusion on the Best Soil for Cannabis

In choosing the best soil for weed, you should follow some other tips as well. You have to do every step slowly and use Ph Tester too. Apart from this, you can also ask the friends who have earlier planted marijuana in their homes, garden or backyards.

Follow the above steps and get the best quality of weed.

About Admin

With over twenty years of experience in commercial hydroponic crop production, I have just about grown everything. I am actively involved in urban gardening initiatives, community agriculture education and am a guest speaker for many agricultural conferences and seminars.

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