How To Make Super Soil And Grow Better Cannabis Plants

Photography by Kaya Kelly Blaze for Herb

Guides | 04.23.2023

How To Make Super Soil And Grow Better Cannabis Plants

Here's an easy way to take your plants to the next level.

Thinking about growing cannabis this year? The growing season is upon us, so gather your seeds, situate your grow, and let’s turn that thumb green.

One essential part of growing strong and healthy cannabis plants is having cannabis-specific soil packed with essential nutrients. You could buy them online, but why not make them at home? Yes, it’s definitely a lengthy process, but one that’s incredibly rewarding in the end.

For our cherished home growers, we’ll help you harvest the best cannabis plants possible. Read on to learn more about how to make super soil specifically for cannabis plants.

What Is Super Soil?

Super soil refers to soil that has been pre-prepared to contain enough nutrients to support your cannabis plant throughout the entire growing process.

Another great part about super soil is not worrying about pH and nutrient levels since the soil is loaded with your essentials. And since you only need to add water to this soil, you can skip the flushing process at the end of the grow cycle.

However, growing with super soil may also take slightly longer while yielding slightly less. If you’re not careful, you could also end up “burning” plants with super soil. Still, many growers prefer to use super soil, which more closely mimics the natural outdoor growing conditions of cannabis.

How Do You Make Super Soil?

Making super soil requires lots of time, planning, and ingredients. For this reason, some people prefer to simply buy pre-made super soil. However, if you’ve got a DIY spirit, making your own super soil is possible—and easy.

In fact, the most difficult part of making super soil is finding the ingredients and having enough patience to wait for the soil to compost once you mix the ingredients together.

The main nutrients your plant will need include the following:

  • Nitrogen
  • Phosphorus
  • Potassium
  • Magnesium
  • Calcium
  • Sulfur.

The secondary macronutrients your plant needs are Chlorine, Iron, Copper, Boron, Zinc, Molybdenum, and Manganese.

The following ingredients list contains these necessary nutrients and macronutrients. Take a look at the following instructions to learn how to make super soil at home.

Ingredients For DIY Super Soil

What You Need to Make Super Soil:

Photography by Kaya Blaze Kelley for Herb

*Tip: Organic is always better

  • 14 cubic feet (eight large bags) of high-quality potting soil
  • 1 cubic foot of worm castings
  • 2.5 lbs of bone meal
  • 2.5 lbs of fish bone meal
  • 5 lbs of high phosphorus bat guano
  • 5 lbs of blood meal
  • 3 cups of oyster shells
  • 3 cups of kelp meal
  • 3 cups of alfalfa meal
  • 3/4 cups of Epsom salts
  • 3/4 cups of agricultural lime
  • 2 cups of Azomite
  • 2 tbsp of granular humic acid
  • 2 tablespoons of mycorrhizae/compost tea mix
  • Tarp, kiddie pool, or other material/place that can be used for mixing large amounts of soil without making a mess
  • Garbage Cans with Lids
  • Base soil
  • Large Mixing Bowl

How To Make Super Soil:

Step 1:

what is fusarium 13

Photography by Kaya Blaze Kelley for Herb

Pour all of the ingredients onto your tarp and thoroughly mix them. Add some water to the mixture until moist, but not so much that it will be sopping wet or extremely damp. The key is to wet the mixture to allow for healthy humidity

Step 2:

step 2 to make super soil

Photography by Kaya Blaze Kelley for Herb

Transfer the mixed ingredients into your garbage cans and put the lids on. Allow the mixture to sit in here for 45 to 90 days so that it can compost. Make sure you keep the garbage cans in a warm place for the duration of these days. At the end of the composting period, you will have your super soil mix.

Step 3:

step 3 to make super soil

Photography by Kaya Blaze Kelley for Herb

Once your super soil is ready, it’s time to add it to your plant pots. Fill only the bottom 1/4th to 1/3rd of your pots with your super soil mixture.

Step 4:

step 4 to make super soil

Photography by Kaya Blaze Kelley for Herb

In your separate mixing bowl, mix some base soil together with your super soil. Then, add some of this on top of your super soil mix in your plant pot. This layer is called the “buffer zone” and should only be a few inches deep.

Step 5:

How To Make Super Soil And Grow Better Cannabis Plants

Photography by Kaya Kelly Blaze for Herb

Fill the rest of your plant pot with base soil. Then, make a hole in the center of the soil and transplant your cannabis plant into the soil.

Step 6:

You’re done! From now on, your plant will only require regular water.

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