About the Prepare and amend your soil category

Here in this category we can learn how to prepare and amend our soil in order to grow successfully outdoors. There is more to growing than just placing a plant in the ground or in a big pot.

Our expert staff will guide you to successful growing. :slight_smile:
lw - Admin


I don’t grow outdoors however this intrested me. I’m growing in coco perlite mix 70 coco 30 perlite. My question is can I add anything to the coco to save on bottled nutrients? I use AN ph perfect line so it would have to be something that would not give me negative results wit this nutrient line

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Yes!!! This topic though. I hope to compare a few recipes. Maybe tweak and twerk a few ingredients… but u guys are the bill nye’s of soil amending. @garrigan62 get on over here n fill this post :joy::rofl::joy::rofl::joy::+1:t5:

Well i mix soil for my outdoor grows. I mix dry ingredients with some premix soil in December then add here and there while mixing every2 to 3 weeks then holes are ready by march.

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Are you sure you really want me to do that ….lol

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Soil LESS Mix

Mixing ammounts will veary dependeds on how much you make. read instructions on each package for amounts.
Myself I mix 2 different batchs

1.) Seedling mix
2.) Vegg. mix and Flower mix / with my flower mix being placed on the bottom half of the 5 Gal grow pot
with the vegg. mix on top.

1.) Pro Mix BX

Then add-----

2.) ( Mexican Bat Guano )

(10-2-1) This type of guano is very high nitrogen. This makes it perfect for the vegetative stages of growth.
Even when the plant is young it can be fed a dilute mixture if the soil happens to contain very little nutrients.
This type of guano can be used throughout the vegetative stage of growth.


( Jamaican Bat Guano (1-10-0.2) This type of bat guano is high in phosphorus. It is perfect for the early-mid
flowering cycle once females are well established. )


(because this stuff is so nutritious, the more the better).

Worm poop is gardening gold. Properly known as “worm casts”, what worms leave behind is actually
vital to the soil food web and is one of the key substances to maintaining healthy, nutrient-dense
soil for your plants. To quote from Sustainable World Radio:

“Research has shown that fresh earthworm casts are five times richer in available nitrogen,
seven times richer in available phosphates, and 11 times richer in available potash than the
surrounding upper six inches of soil. […]

Plant roots often seek out available earthworm casts. They follow the worm Burroughs and feed
on the nutrients in the available vicinity even if it means that the roots have to grow upward.”

While growers often spend a significant chunk of change on fertilizers throughout the grow cycle,
adding worm castings to your soil inundates them with the vital, natural nutrients they most desire.


This additive is a nice way to get some additional phosphorous and calcium to your plants. An abundance of phosphorus
is especially important once your plant has reached flowering phase. To again draw from Gardening Know How:

“Using bone meal will help your flowering plants, like roses or bulbs, grow bigger and more plentiful flowers.”

As a flowering herb, the added phosphorus from bone meal helps your plant produce buds that are nice and big.


Blood meal is yet another source of nitrogen. It’s also not vegan/vegetarian-friendly.
Blood meal is made from the dried blood of slaughtered animals, most predominantly cows.
Though the idea behind the fertilizer is a little unpleasant, its well-known natural gardening product.
Because it’s so nitrogen lush, it will help produce extensive growth during the vegetative phase.


7.) Kelp and/or humid acid

There are a lot of things that growers do to increase
their yields that actually helping to build healthy soil microbiology. Adding kelp meal and humic
acids are some of these tasks. Both of these natural products are fungal foods. The interaction
between your plants roots and soil fungus helps the plant produce the nutrients it needs to thrive.

Kelp also adds a significant amount of potassium and copper to your soil mix.

8.) Epsom salt

A lot of people use Epsom salt to increase magnesium in their soil. As mentioned earlier,
you want to be careful not to add too much. You don’t want to over do it with the magnesium.
However, if your plant is showing signs of a magnesium deficiency, this is a very quick and
easy way to add some back in. Magnesium iscrucial to the absorption of other key nutrients,
like nitrogen and phosphorous.

All about microbes

Subcool’s soil mixture is definitely a good one. As is probably obvious by the various additives
in this recipe, this soil is extremely nutrient-rich. It’s chuck full of natural fertilizers and
makes it easy on the plant to have its favorite nutrients right at its root tips, so to speak.
Many of the extra or leftover additives can then be diluted with water and sprayed on during
the grow cycle as fertilizer.

If there’s one downfall to this recipe, it’s that it relies heavily on organic additives over
encouraging microorganism growth. In a plant’s natural environment, they get vital nutrients
from synergistic interactions between the plant and other organisms in its ecosystem. Plants
photosynthesize sunlight into sugars, and these sugars are in turn secreted by the roots. This
is a much more consciousprocess than commonly believed.

A plant can make an extremely wide variety of sugars and secrete them to attract specific types
of bacteria and microorganisms to its roots. These bacteria then eat these sugars, called exudates.
Through the bacterial metabolic process, essential nutrients like nitrogen are created for the plant
to use. Yet, nitrogen isn’t the only nutrient created through this process. This is how much-needed
vitamins and trace minerals make it into your plant.

9.) Dolomite lime

Recommended amount: 1 cup

Dolomite lime adds calcium and magnesium to your soil. Like rock phosphate, dolomite is also
a kind of mineral rock. It’s used to counteract mineral leaching. It also helps keep the
soil from becoming too acidic. Be careful not to add too much, though. It has high calcium
to magnesium ratio, and you may risk adding too much magnesium to your plants.

Azomite (trace elements)

Azomite is a brand of trace minerals. It’s mined from volcanic rock and contains over
70 minerals and trace elements. This particular brand is mined in Utah and is used to
re-mineralize soil. The product contains everything from gold, silver, and selenium
to potassium, choline, copper and calcium. Adding a few trace elements into your
increases the diversity of nutrients available to your plantss.


Marijuana growers are very smart gardeners. There are a lot of things that growers do to increase
their yields that actually helping to build healthy soil microbiology. Adding kelp meal and humic
acids are some of these tasks. Both of these natural products are fungal foods. The interaction
between your plants roots and soil fungus helps the plant produce the nutrients it needs to thrive.

Kelp also adds a significant amount of potassium and copper to your soil mix.


Lol may as well post one more time for my health lol. This will be my new soil go to thread if we can fill her up :+1:t5:

My man :joy::joy:



Soil Recipe to be mixed with 1 to 1/1/2 cu ft of base soil
And Pro Mix BX

.3125 lb or 5 oz Fishbone Meal 3-16-0

.3125 lb or 5 oz Steamed Bone Meal 2-14-0

.625 lb or 10 oz Bat Guano 0-7-0

.3125 lb or 5 oz Blood Meal 13-0-0

.3125 lb or 5 oz Feather Meal 12-0-0

.375 lb or 6 oz Colloidal Rock Phosphate 0-3-0

1 tbsp Potassium Sulfate 0-0-53

1 tbsp Souluble Kelp Powder 0-0-17

1 tbsp Mycorrhizal Fungi (300 spores per gram)

3/4 tsp Powdered Humic Acid (90 % pure)

1 1/2 tbsp Epsom Salt

1tbsp Sweet Lime (Dolomite)

1 tbsp Asomite (Trace Elements)

6.25 lbs Worm Castings



How’s that for a start ? Want more?

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Hehe. Thats exactly what i expected. My breakdown of npk n ingredients. If u have a bit more im sure it wouldnt hurt. N if is it possible to overbake a super soil? Like 2 months in the tarp too long?


If we could bake Brownies li ke we bake soil we’d be on to something.
You can’t over bake your soil…well in the oven you couldf f&%k things up but not outside in a tarp

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Some of you have asked me for my recipe well here ya go.

I started out with an off brand of Pro Mix same thing but different brand.

I added 3 1/2 gal’s of Mix to a 5 gal cloth pot. Then add one gal of worm castings,
Guano Grow Crazer Guaranted Analyis For Vegg Phase 5-1-1 one half gal,
than added Indonesian Bat Guanno one tsp per gal of soil or 5 tsp’s
Bone Meal I added 5 tsp’s and mixed them real good togetter.



Super Tea Mix
0.5 - 0.5 - 0.10 mix 2 - 3 tsp’s per galof water " WILL NOT BURN SEEDLINGS "


Every watering durning vegg i would add one cap full of Fish Fertilizer 5-1-1
then i added Veganic Special Sauce a Microbial Tea and Inoculant 0.75 - 2.15 - 2.10
mix 1 tsp per gal of water every watering

Durning their growth would spray them with a:


I would also add two cap fulls of " HYDROGEN PEROXIDE" TO EACH WATERING.


I added Bone Meal to the top soil I added one to two tsp’s per plant once every other week.

At the start of flower add SCOTTS SUPER BLOOM 06 - 55 - 12

When i watered i added one tsp of Molasses and one tsp of Honey per gal of water twice a week for the entier flower period.


Durning watering once per week i would add one tsp of Epson Salt.

And that’s it. I didn’t have any problems what so ever not one defecency not a one.


I add sparkling water to mine. Same basic principle to add extra oxygen. I make mine with a SodaStream and add it to my watering, since it’s acidic, not the feedings. I go through enough pH up as it is already.

I use miracle grow soil, natures care, EB Stone soil, worm castings, chicken manure, and of course gypsum. and this is what I get

The big tall one is 9 feet tall 1st bucket on the right

I’ve been doing this same mixe for years and it hasn’t failed me yet. The only things they have been given is Open Sesame, Beastie Bloomz and Cha-Ching, fish gunk and tap water. They are in their natural state untouched and in 5 gal. buckets, no staking or proping needed, I am for easy and the proof is in the Bud


Thats some impressive shiznit growing there! Well done. Do u have problems starting in the mg? Or its just smoooooth?

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@PurpNGold74 Never and I have a 99.9 germination rate they are planted in seed starter soil and are usually up in 3 days I had one of my winter grows test at 28%

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Haha sounds like me and u would be goooood friends. :clap:t5::clap:t5::clap:t5::clap:t5: I tip my hat to u tho maam

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@PurpNGold74 well good friends we can be and thak you for the comment. I am in a wheel chair and am 70 yrs old besides no help either. Check out my journals:)

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Ive peeked into them but have the attention span of a flea. More of a ‘hey new topic!’ Guy. And id have NO PROBLEM trimming and clipping n helping under ur tutelage. We’d be unstoppable. :joy:

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@PurpNGold74 I have 9 gals and it’s a full time job. I’ve got one just on the verge of being done and let’s get this show on the road girls