The Best Soil Mix for Growing Cannabis Outdoors

Choosing a base soil
Firstly, the base soil must be selected. This will act as the top soil, and the base ingredient for the super soil. High-quality organic compost should be used for this, and it is important not to skimp on cost - the better quality, the better the final results will be. The central idea here is to start out with a rich compost that already packs a punch, but not so much as to overload young plants. Check out the ingredients before you buy; subcool describes his ideal compost as containing as many of the following ingredients:

Lignite, coco fibre, perlite, pumice, compost, peat moss, bone meal, bat guano, kelp meal, greensand, soybean meal, leonardite, k-mag, glacial rock dust, alfalfa meal, oyster shell flour, earthworm castings and mycorrhizae.

Most likely you won‘t find this exact composition in your garden center, but any combination of these elements will work well.

Creating the super soil
Once you have a base soil selected, it is time to create the super soil. These are just quantities to start out with, adjust as needed. For the super soil you will need:

4 large bags of base soil (high-quality organic potting soil with coco fibre and ideally, mycorrhizae)
5 to 10 kg of organic worm castings (worm poop)
1 kg of blood meal
1 kg of Bloom bat guano
1 kg of steamed bone meal
.75 kg of rock phosphate
1/8 cup Epson salts
1/4 of cup azomite (trace elements)
1/2 of cup sweet lime (dolomite)
1 tbsp of powdered humic acid

If your base soil has been heat treated or sterilized, it is a good idea to add in the previously mentioned Bactrex and Mycotrex mixes.

To create the super soil, mix up all of these ingredients:

1. To begin with, you will need a clear area to work in.

2. Either place down a tarpaulin or large plastic kid’s pool to do the mixing in. If you are not one for physical labour, then it is also possible to use a clean cement mixer.

3. Create a mound of base soil (a few bags) in the centre of the tarp/pool.

4. Spread the powdered nutrients onto the top of the mound.

5. Add another layer of base soil onto the mound.

6. Spread the bat guano onto the top of the mound.

7. Add another layer of base soil onto the mound.

8. Continue to add layers of ingredients followed by layers of base soil until everything is used up.

9. Now it's time to get dirty. Put on your boots and using a spade, mix everything together vigorously until it’s just one homogenized substrate. This might take up to 20 minutes of intense work, but it is a very important step – the soil will not be effective if it is not mixed thoroughly.

10. The soil mix is then spaded into large plastic garbage cans for storage.

11. Add 10 liters of water to each garbage can. This will make future mixing hard, but it activates the mycorrhizae within it and help dissolve all of the powders.

12. Now leave the garbage cans to cook in the sun for 30 days – careful they don’t get rained heavily on.

Note: Subcool advises that just before any of the soil in the garbage cans is used for growing, the cans should be tipped out and mixed one last time for good measure.

There you have it, you have now made a supremely rich soil performance.
 
Thanks for the tips Mariwana lady,

I consider Subcool to be one of the best breeders of all time.

It would've been awesome if you had some pictures to go along with your tips.

I use to go to the forest to scrape off the top soil and collect it into some trash bags.
The forest top soil is mostly composed of humus (Decomposed leaves and plant matter) and is full of live.
Mix it with your soil and it will be very both full of organic nutrients and beneficial to the soil life.

DSCF2392.JPG
 

_Waldo_

Member
Choosing a base soil
Firstly, the base soil must be selected. This will act as the top soil, and the base ingredient for the super soil. High-quality organic compost should be used for this, and it is important not to skimp on cost - the better quality, the better the final results will be. The central idea here is to start out with a rich compost that already packs a punch, but not so much as to overload young plants. Check out the ingredients before you buy; subcool describes his ideal compost as containing as many of the following ingredients:

Lignite, coco fibre, perlite, pumice, compost, peat moss, bone meal, bat guano, kelp meal, greensand, soybean meal, leonardite, k-mag, glacial rock dust, alfalfa meal, oyster shell flour, earthworm castings and mycorrhizae.

Most likely you won‘t find this exact composition in your garden center, but any combination of these elements will work well.

Creating the super soil
Once you have a base soil selected, it is time to create the super soil. These are just quantities to start out with, adjust as needed. For the super soil you will need:

4 large bags of base soil (high-quality organic potting soil with coco fibre and ideally, mycorrhizae)
5 to 10 kg of organic worm castings (worm poop)
1 kg of blood meal
1 kg of Bloom bat guano
1 kg of steamed bone meal
.75 kg of rock phosphate
1/8 cup Epson salts
1/4 of cup azomite (trace elements)
1/2 of cup sweet lime (dolomite)
1 tbsp of powdered humic acid

If your base soil has been heat treated or sterilized, it is a good idea to add in the previously mentioned Bactrex and Mycotrex mixes.

To create the super soil, mix up all of these ingredients:

1. To begin with, you will need a clear area to work in.

2. Either place down a tarpaulin or large plastic kid’s pool to do the mixing in. If you are not one for physical labour, then it is also possible to use a clean cement mixer.

3. Create a mound of base soil (a few bags) in the centre of the tarp/pool.

4. Spread the powdered nutrients onto the top of the mound.

5. Add another layer of base soil onto the mound.

6. Spread the bat guano onto the top of the mound.

7. Add another layer of base soil onto the mound.

8. Continue to add layers of ingredients followed by layers of base soil until everything is used up.

9. Now it's time to get dirty. Put on your boots and using a spade, mix everything together vigorously until it’s just one homogenized substrate. This might take up to 20 minutes of intense work, but it is a very important step – the soil will not be effective if it is not mixed thoroughly.

10. The soil mix is then spaded into large plastic garbage cans for storage.

11. Add 10 liters of water to each garbage can. This will make future mixing hard, but it activates the mycorrhizae within it and help dissolve all of the powders.

12. Now leave the garbage cans to cook in the sun for 30 days – careful they don’t get rained heavily on.

Note: Subcool advises that just before any of the soil in the garbage cans is used for growing, the cans should be tipped out and mixed one last time for good measure.

There you have it, you have now made a supremely rich soil performance.
Would love to keep this thread alive as there aren’t many forums on outdoor growing. Soil management seems like a good start. Any one growing outdoors in the southern west coast of the United States?
 

kaydeezee

Well-Known Member
Choosing a base soil
Firstly, the base soil must be selected. This will act as the top soil, and the base ingredient for the super soil. High-quality organic compost should be used for this, and it is important not to skimp on cost - the better quality, the better the final results will be. The central idea here is to start out with a rich compost that already packs a punch, but not so much as to overload young plants. Check out the ingredients before you buy; subcool describes his ideal compost as containing as many of the following ingredients:

Lignite, coco fibre, perlite, pumice, compost, peat moss, bone meal, bat guano, kelp meal, greensand, soybean meal, leonardite, k-mag, glacial rock dust, alfalfa meal, oyster shell flour, earthworm castings and mycorrhizae.

Most likely you won‘t find this exact composition in your garden center, but any combination of these elements will work well.

Creating the super soil
Once you have a base soil selected, it is time to create the super soil. These are just quantities to start out with, adjust as needed. For the super soil you will need:

4 large bags of base soil (high-quality organic potting soil with coco fibre and ideally, mycorrhizae)
5 to 10 kg of organic worm castings (worm poop)
1 kg of blood meal
1 kg of Bloom bat guano
1 kg of steamed bone meal
.75 kg of rock phosphate
1/8 cup Epson salts
1/4 of cup azomite (trace elements)
1/2 of cup sweet lime (dolomite)
1 tbsp of powdered humic acid

If your base soil has been heat treated or sterilized, it is a good idea to add in the previously mentioned Bactrex and Mycotrex mixes.

To create the super soil, mix up all of these ingredients:

1. To begin with, you will need a clear area to work in.

2. Either place down a tarpaulin or large plastic kid’s pool to do the mixing in. If you are not one for physical labour, then it is also possible to use a clean cement mixer.

3. Create a mound of base soil (a few bags) in the centre of the tarp/pool.

4. Spread the powdered nutrients onto the top of the mound.

5. Add another layer of base soil onto the mound.

6. Spread the bat guano onto the top of the mound.

7. Add another layer of base soil onto the mound.

8. Continue to add layers of ingredients followed by layers of base soil until everything is used up.

9. Now it's time to get dirty. Put on your boots and using a spade, mix everything together vigorously until it’s just one homogenized substrate. This might take up to 20 minutes of intense work, but it is a very important step – the soil will not be effective if it is not mixed thoroughly.

10. The soil mix is then spaded into large plastic garbage cans for storage.

11. Add 10 liters of water to each garbage can. This will make future mixing hard, but it activates the mycorrhizae within it and help dissolve all of the powders.

12. Now leave the garbage cans to cook in the sun for 30 days – careful they don’t get rained heavily on.

Note: Subcool advises that just before any of the soil in the garbage cans is used for growing, the cans should be tipped out and mixed one last time for good measure.

There you have it, you have now made a supremely rich soil performance.
thanks for sharing with us ' some great info.
QUESTION: i presume this recipe is based on 4x50litre bags of base soil YES?

QUESTION: would CANNA pro be ok as a base for this recipe?

QUESTION: how long can i store the unused mix NOT being used between grows?

its going to be fun giving this a go
 
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