This is my soil recipe.
It also has way to much information on soil as well.
You can substitute what you have for similar ingredients. Such as compost and leaf molds etc.
Soil & Recipe
A basic super soil recipe. Understanding soil mineralization, soil ecosystem and brix in general will help you appreciate this recipe.
This soil is capable of lush growth and bountiful yields. It is tried and tested via years of use.
1-large bag (2 cu ft) organic potting soil. (no added fertilizers)
Add compost of mushroom, leaf mold and/or forest humus and/or ocean compost if soils do not contain.
Best practice is to add a blend of all.
Compost is carbon and is vital to your PH and micro life stability.
1-large bag (2 cu ft) light mix (hanging basket mixes)
1 cu ft perlite or comparative drainage product (choose a brand)
1 cu ft worm dirt (worm castings) or (cow manure-composted)
2 cup bone meal (Alternative = soft-rock phosphate alternative)
2 cup blood meal (Alternative - alfalfa meal)
3 cup Kelp meal (I do not add to mix as I input during grow regular but this is normal part of recipe)
4 cups fruit bat guano
1 cup dolomite lime,
1/2 cup Epsom salts
Can use agricultural lime but increase Epsom salts to 3/4 cup from the 1/2 cup Epsom salts
Biochar - you can inoculate with any below or any nitrogen based solution with microlife.
Inoculate with natural farming inputs high in nitrogen.
Inoculate with equal amounts of garden teas and molasses.
+Pest management and brix additives.
BTI (gnat control)
Nematodes (optional pest control for most soil based bugs)
Rock dusts & azomite
Myco fungus and bacteria.
Break Down of Recipe
1-large bag (2 cu ft) organic potting
Any organic potting soil soil with good drainage.
You want soil with a mix of humus and ocean blends.
No chemical fertilizers
If you cannot find, add in the following type of composts
compost with ocean shells and kelp.
compost with good humus and or mushroom compost.
1-large bag (2 cu ft) light mix type of potting soil.
Fox Farms Light Warrior soil, or promix or media for hanging baskets, or orchid mix it is likely suitable.
Any high drainage potting soil or soiless media
no chemical or additional fertilizers.
1 cu ft perlite (choose a brand) Rice hulls are also good, biochar will do similar if used and if so perlite could be skipped.
chunky and not so fine.
High drainage is key for getting air to roots.
Some of the biggest indoor plants I have seen, were grown in only perlite.
I dont recommend only growing in perlite.
1 cu ft worm worm castings, (Cow Manure, composted is a very good alternative and some would say that about worm castings).
Add this in, in addition to any worm casting that might be contained in the other soils, you cannot have enough really.
This is key to jump starting the mineralization process.
Source of microbes and is where the bio life will mostly come from.
Watering in with a garden/compost/casting tea will help boost microbes too.
Generically I use basic veg tea without adding nitrogen other than castings and composts (my compost has some nitrogen from worm bin drainage)
You can adjust for the growth of the plants, using nitrogen aspects in vegetative periods and phosphorous when in flowering phases, generically spoken.
you will not burn your plants with correct castings.
Take it easy with worm bin drainage this is hot hot hot.
If you use your own castings you will see the sprouts of what you eat will come up initially when soil is put in grow room/container. I let this happen for a moment as it helps jump start the microbe life in soil.
The sprouts of stuff gets recycled in compost bin but also can be used for making an IMO to help boost sprouts similar to roots excelsior. I will write on that later.
1 cu ft compost (optional).
If only able to get basic soil and basic light mix
Add compost with sea minerals
Add compost with humus
Garden or home compost
Bokashi is a very good alternative for garden compost).
2 cup bone meal NPK - 3-15-0
This adds phosphorous.
(Alternative = soft-rock phosphate alternative)
Add fungi mycorrhiza as it breaks down the phosphorus and makes it available to the plant.
Plants can only get phosphorus from bone meal if the soil PH is below 7.0 (acidic soil). (I have never seen as issue but if phosphorous is an issue than check PH out out due diligence.
2 cup blood meal NPK - 12-0-0
Add nitrogen and can be made into a liquid
(Alternative - alfalfa meal)
I like for recharging soil
helps maintain compost
A single application of blood meal is usually effective for 6 to 8 weeks before subsequent feedings are needed.
Is quick acting and can burn your plants if you use too much.
Take it easy adding extra nitrogen to your recipe.
If young plants show a bit to high ec signs, reduce blood meal in the recipe by a 1/4 to a 1/3 next time.
It is easier to add than take away. If you have light feeding plants use less and adjust accordingly listening to the plants.
Blood Meal works with bacteria and nematodes (worm castings and teas are typical source) in the soil to breakdown the powder into nitrogen components so plants can more easily absorb the nutrients.
4 cups fruit bat guano NPK 0-10-0 (NPK can vary but ensure higher in P than N)
adds NPK but also adds mico life like worm castings
Reduce and increase as per your plants feeding. Reduce for light feeders but I would not increase without getting a feel for the soil and how it works with your plants.
Guano helps keep the soil loose and not bulky by aiding decomposition
This helps keep a good aeration at the roots.
1 cup dolomite lime
You can also use agricultural lime or garden lime but you might need to adjust the magnesium.
If using agriculture lime than increase Epsom salts by 1/4 cup per gallon which adjusts the magnesium.
1/2 cup Epsom salts
Magnesium is absorbed right when the seed begins to develop.
Magnesium assists with the process of seed germination, helping to strengthen the plant cell walls and improves received nutrients.
Magnesium assist with making chlorophyll
Magnesium helps the plant take in phosphorus and nitrogen
Sulfate, a mineral form of sulfur.
Sulfate is essential to the health and longevity of plants, and aides in the production of chlorophyll.
It works like a catalyst in the soil to make key nutrients more effective for plants, including nitrogen, phosphorus and potassium.
2 cups of rock dust
(many do not do this, it is not needed but will increase brix if activated/mineralized by biolife) .
Adds trace nutrients and macro nutrients.
Needs to be mineralized to work (biolife)
2 cups of Azomite
(many do not do this, it is not needed but will increase brix if activated/mineralized by biolife)
Similar to rock dust
I like as it breaks down differently than rock dust.
BTI, Mosquito dunks to chunks to liquid.
Sprinkle bti on the soil and mix real good.
Liquid drops (microlift) (a few drops will take care of 30 gallons of water)
work faster than dunks
Use yucca when watering to help even spread in medias.
Great protection for fungas gnats.
It will not prevent infection but prevent them from reproducing.
Using these will prevent infestations
Some of these ambush and some actively hunt. Horror movie monsters in miniature.
Hope that helps.