How to Make Super Soil for Cannabis at Home | Pop's Cannabis

Answer

To make super soil for cannabis at home, mix a potting soil with worm castings and dry amendments. Add blood meal, bone meal, bat guano, alfalfa meal, kelp meal, rock phosphate, dolomite lime, Epsom salt, azomite, humic acid, and mycorrhizae. Moisten the mix with water. Let it sit in a container for 30 to 60 days. Turn the mix every 3 to 5 days. Use the super soil as the bottom third of a pot. Fill the top two-thirds with potting soil.

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What Is Super Soil?

Super soil is a soil blend that contains nutrients for the life cycle of a cannabis plant. Microbes break down the amendments. Plants take up those nutrients over weeks. You do not need to add liquid fertilizer if you use super soil.

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Super Soil Recipe (Subcool Style)

This recipe makes about 12 cubic feet of soil. It fills four 15-gallon pots or eight 7-gallon pots.

does super soil work for cannabis

Base Mix

• 8 bags (1.5 cubic feet each) potting soil
• 2 bags (1.5 cubic feet each) worm castings

Amendments

• 5 lbs blood meal
• 5 lbs bone meal
• 5 lbs bat guano
• 5 lbs alfalfa meal
• 3 lbs rock phosphate
• 3 lbs kelp meal
• 1 cup dolomite lime
• 1/2 cup Epsom salt
• 1/2 cup azomite
• 2 lbs humic acid
• 1 lb mycorrhizae

How to Mix Super Soil

1. Put the potting soil and worm castings in a tarp or kiddie pool.
2. Add all amendments.
3. Mix with a shovel or hands until colors blend.
4. Add water until the mix holds together when squeezed.
5. Put the mix in a 32-gallon trash can or a raised bed.
6. Cover the container.
7. Let it cook for 30 to 60 days.
8. Turn the mix every 3 to 5 days.
9. Add water if the mix dries.

How to Use Super Soil

Fill the bottom third of a pot with super soil. Fill the top two-thirds with potting soil. Plant the cannabis clone or seedling in the top layer. Roots grow down into the super soil. For seedlings, use potting soil. For plants in flower, super soil supplies phosphorus and potassium. Do not put super soil in the top layer. It can burn roots.

Tips

• Keep the soil moist, not wet.
• Use a pH meter. Super soil pH should be 6.2 to 6.8.
• Store super soil in a container at 60 to 70°F.
• Use gloves when handling blood meal and bat guano.
• Do not use super soil for seedlings.

Warnings

Bat guano and blood meal can carry pathogens. Wear a mask. Do not use super soil in a pot smaller than 7 gallons. Pots run out of nutrients. Super soil can attract pests. Keep it covered.