Knf

[ASecretSquirrel]

I have only been reading about this I have never attempted I am still in the learning stage.

 

[Sloberrhose]

What's a IMO box? Was planning on doing some outdoor gardening this yr but need to get some planters. Thought I might build some, plans may change though. Lol.
Always interested in other ideas n such.

A box (typically cedar) to collect Indigenous Microorganisms. IMOs are the heart of the KNF system, essentially you place cooked white rice in the box and set it out in as undisturbed an area of forest as you can find, depending on weather you come back in a few days to a box full of rice and nice fungal blooms, you mix 1:1 with brown sugar immediately to put the microbes into a state of dormancy for storage, now you have IMO2. IMO2 is mixed with water, FPJ, OHN, & minerals, then applied to a pile of carbon and carbohydrate and kept under 120° for a number of days until it reaches ambient temp, you now have IMO3. Mix a handful of imo3 with water, fpj, ohn, take 1 part of your topsoil and mix it with the remaining imo3 pile, apply liquid imo mix, maintain under 120 til ambient. Now you have imo4, the most versatile imput in your arsenal.

 

[LG/]

Bump. Sorry been doing this alot lately, have had a mental list of things I've wanted to learn about... trying to facilitate this through PH.

Knf has been in the back of my mind for a while.
Quick story- met a friend of a friend, dude who moves some and thinks he knows a thing or two haha. Starts his day off with a big dab sort of epitome of a stoner, more power to him, no way I could keep up.
Anyways he swears by KNF. Idk if I buy it, I guess I need it explained to me. I haven't done any research yet. So I'm coming in with no bias or knowledge.

My ignorant view is essentially me wondering what the mechanism of action is. Are we talking feeding/increasing good microbes?! Actual nutrients available from materials used?

I assume it's not direct what you put in is what you get out, aka using fruit for knf/compost tea increases fruit terps. Or banana knf tea making the flowers smell like banana...

That's the way I recall the guy describing it... now he's been around, maybe he knows more than me.

Which is why I am asking here.

If anyone would be so kind, share your view on KNF in layman's terms, how it works, benefits, reason for use. etc.

Thanks!

 

[BH]

KNF (Korean Natural Farming) is a regenerative farming method developed by Dr. Cho Han Kyu in South Korea. It uses fermented inputs made from local, natural ingredients to nourish soil life, support plant health, and eliminate the need for synthetic fertilizers and pesticides.



What is KNF Farming?




KNF is a low-cost, closed-loop system that mimics nature. It focuses on feeding and supporting indigenous microorganisms (IMOs) in the soil, which in turn feed plants. Instead of buying nutrients, you make your own inputs like fermented plant juice, fish amino acids, and microbial cultures using sugar, water, and plant/animal materials.




Core KNF Inputs & How to Make Them:

Input​	Purpose​	How to Use​
IMO (Indigenous Microorganisms)	Establish strong soil microbiology	Collected from a nearby forest using cooked rice and fermented
FPJ (Fermented Plant Juice)	Stimulates plant growth	Made by fermenting fast-growing plant tips with brown sugar
FA (Fish Amino Acid)	Provides nitrogen and trace minerals	Ferment fish scraps with brown sugar and lactic acid bacteria
OHN (Oriental Herbal Nutrient)	Boosts immunity and pest resistance	Made from garlic, ginger, cinnamon, and alcohol extraction
LAB (Lactic Acid Bacteria)	Improves nutrient availability and digestion	Made by culturing rice-washed water and milk
FFJ (Fermented Fruit Juice)	Used in flowering stage	Made from ripe fruits and brown sugar
WCAP (Water-soluble Calcium + Phosphate)	Strengthens cell walls and helps with fruiting	Made from eggshells and vinegar
WCA (Water-soluble Calcium)	Boosts flowering and prevents calcium deficiencies	Made by soaking roasted eggshells in vinegar

Benefits of KNF Farming:

1. Cost-effective: Uses local and kitchen waste materials — minimal need for store-bought products.
2. Improves soil health: Feeds soil microbes and promotes nutrient cycling.
3. Boosts plant immunity: Fermented inputs strengthen plants’ natural defenses.
4. Sustainable: Reduces dependence on synthetic chemicals and supports biodiversity.
5. Clean, safe food: Great for organic farming and small-scale growers.

Basic Weekly KNF Application (Foliar Spray)

Growth Stage​	Inputs​
Vegetative	FPJ + LAB + FAA (fish amino acids)
Flowering	FFJ + WCA (calcium) + LAB
Pest/Stress Prevention	OHN + FPJ + LAB

How to Start KNF Step-by-Step:

1. Collect IMOs: Place cooked rice in a breathable container in a wooded area to attract native microbes.
2. Culture IMOs: Mix collected rice mold with brown sugar and ferment; then expand on wheat bran or soil for IMO2–4 stages.
3. Brew inputs: Make FPJ, OHN, LAB, FAA, etc., over time as you need them.
4. Apply Weekly: Use diluted input mixtures according to plant stage.
5. Observe & Adjust: Monitor plant responses and adjust ingredients as needed.

Summary:








KNF = local inputs + live biology + natural plant nutrition. It transforms waste into powerful fertilizers, strengthens plant resistance, and rejuvenates the soil—all in a sustainable, low-cost way.

 

[Mr Jay]

A compost pile will break down solid material, in the presence of oxygen, to yield useful solid material.

KNF , generally, will break down solid material, in the absence of oxygen, to yield useful liquid material.

 

[LoboGrow]

KNF is legit, but it's mainly been used for vegetable farming and has really only been used in cannabis for a few years. Definitely a developing system if you have the time, space and desire...

 

[BH]

KNF is legit, but it's mainly been used for vegetable farming and has really only been used in cannabis for a few years. Definitely a developing system if you have the time, space and desire...

KNF farming is not mainstream in cannabis cultivation, but it is gaining popularity, especially among:

• Small-scale, craft, and regenerative growers
• Organic-certified or Clean Green Certified farms
• Growers focused on sustainability, terpene quality, and soil health
• Off-grid or low-budget growers who want to make their own nutrients

Why it’s not more common (yet):

• KNF requires time and knowledge to make and apply inputs correctly.
• It’s less predictable than synthetic nutrients, especially for commercial-scale production.
• Many commercial growers prioritize yield and consistency over quality and flavor .

But it’s growing because:

• Cannabis consumers are demanding cleaner, chemical-free products.
• KNF-grown cannabis often has richer terpene profiles and better flavor/smoothness.
• It’s cost-effective once the methods are learned.

In short, KNF is still niche, but it’s growing fast in organic and regenerative cannabis circles.

KNF (Korean Natural Farming) is used in both cannabis and hemp cultivation, particularly in organic and regenerative farming circles. KNF is valued for promoting plant health, improving soil microbiology, and reducing input costs.


Here’s how KNF is applied in cannabis or hemp farming:


1.
Fermented cannabis Plant Juice (FPJ)

• Purpose: Provides natural growth hormones and nutrients.
• Use: Sprayed during the vegetative stage to promote lush growth. Often made from fast-growing local plants like comfrey or mugwort.

2.
Fermented Fruit Juice (FFJ)

• Purpose: Boosts sugar content and flowering.
• Use: Applied during the flowering stage to support bud development and increase terpene production.

3.
Indigenous Microorganisms (IMO)

• Purpose: Improves soil life and nutrient cycling.
• Use: Applied to the soil to strengthen root systems, fight pathogens, and enhance nutrient uptake.

4.

Lactic Acid Bacteria (LAB)

• Purpose: Controls pathogens and aids in nutrient digestion.
• Use: Sprayed on leaves or added to soil to reduce powdery mildew and promote healthy microbe activity.

5.
Water-Soluble Calcium and Phosphorus (WCA/WCP)

• Purpose: Supports bud and flower development.
• Use: Often applied mid-to-late flower to prevent calcium deficiencies and enhance structural integrity.

6.
OHN (Oriental Herbal Nutrient)

• Purpose: Plant immunity booster.
• Use: Used as a general tonic throughout the growth cycle to strengthen plant resistance to pests and diseases.

Why KNF Appeals to Cannabis/Hemp Growers:

• Clean inputs for a product that is often consumed or inhaled.
• Avoids synthetic fertilizers and pesticides.
• Enhances flavor and terpene profiles naturally.
• Supports sustainable, low-cost, closed-loop systems.

Here’s a sample KNF feeding schedule for cannabis, broken down by growth stage. This can be adjusted based on your strain, environment, and input strengths.

Vegetative Stage (Weeks 1–4)

Input​	Application Method​	Frequency​	Notes​
FPJ	Foliar or soil drench	1–2x/week	Use from vigorous green plants like comfrey or sweet potato tips.
LAB	Soil drench or foliar	1x/week	Promotes root health, fights pathogens. Dilute ~1:500.
IMO#4	Soil application	1x at start	Mix into soil or top-dress for microbial inoculation.
OHN	Foliar or soil drench	2x/week	Helps build pest resistance and plant immunity. Use at ~1:1000.
Diluted FAA (Fish Amino Acid)	Soil drench	1x/week	Optional but helpful for nitrogen during veg. Dilute well (~1:1000).

Transition to Flower

Input​	Application Method​	Frequency​	Notes​
FPJ (from fruits or flowers)	Foliar	1x/week	Start transitioning to inputs made from flowering plants or fruits.
OHN	Foliar or soil drench	2x/week	Continue for immunity.
LAB	Soil or foliar	1x/week	Helps with pathogen control as humidity increases.

Flowering Stage

Input​	Application Method​	Frequency​	Notes​
FFJ (Fermented Fruit Juice)	Soil drench	1–2x/week	Use ripe fruits like papaya or banana to boost sugar/terpenes.
WCA (Calcium)	Soil drench	1x/week	Supports flower structure, especially in mid-flower.
WCP (Phosphorus)	Soil drench	1x/week	Boosts bud size and density. Use in later flowering.
OHN	Foliar or soil drench	1x/week	Optional late flower; lower dose if spraying.
LAB	Soil or foliar	1x/week	Keeps roots and leaves healthy under flowering stress.

Flush (Last 1–2 weeks)

• Plain water or LAB water only.
• Stop nutrient inputs to allow plants to finish clean.

 

[LG/]

FFJ
Fermented fruit juice.

Has anyone personally done this? I might have to do a side by side with the same cut this fall.

What came to mind is how its been claimed that sulphur can bring out more skunky terps.

Similarly it make me wonder if ffj can translate as such. I was thinking that it's not so straitforward, that in the process of becoming available to the plant the fruit becomes more of a general sugar/sweetener. For example, banana ffj would not specifically add banana terps or flavor to the flowers.

Bananas come to mind because they are cheap.

But I'm just guessing to be honest. One thing I know from being on here and asking questions or making claims is that I really don't know much.

Thanks for the replies everyone

 

[BH]

FFJ
Fermented fruit juice.

Has anyone personally done this? I might have to do a side by side with the same cut this fall.

What came to mind is how its been claimed that sulphur can bring out more skunky terps.

Similarly it make me wonder if ffj can translate as such. I was thinking that it's not so straitforward, that in the process of becoming available to the plant the fruit becomes more of a general sugar/sweetener. For example, banana ffj would not specifically add banana terps or flavor to the flowers.

Bananas come to mind because they are cheap.

But I'm just guessing to be honest. One thing I know from being on here and asking questions or making claims is that I really don't know much.

Thanks for the replies everyone

Like anything make sure they are organic, like those bananas peels if not organic the non organic def use some scary shit and it’s def in the peels (fungicides )

But it’s insane good ( terp gerp made this, once my bottle is empty I’m making my own )


“
Here’s a simple KNF-style recipe using banana peels, commonly made into Fermented Fruit Juice (FFJ)—a natural potassium- and sugar-rich input great for flowering cannabis or hemp.





KNF Banana Peel FFJ Recipe

Ingredients:

• Ripe banana peels (yellow with spots, not green or black)
• Brown sugar (raw, unrefined is best)
• A clean glass jar with a loose-fitting lid or breathable cover (cloth or paper towel)

Instructions:

1. Chop banana peels into small pieces for faster fermentation.
2. Weigh the peels, then weigh an equal amount of brown sugar (1:1 ratio).
3. Mix peels and sugar in a bowl until the sugar draws out moisture (they’ll get juicy).
4. Pack the mixture into your jar, pressing it down gently. Leave about 1/3 of the jar empty to allow gas expansion.
5. Cover the jar with a breathable material (cheesecloth, coffee filter) and secure with a rubber band or string.
6. Ferment for 5–7 days at room temperature in a dark place.
   • Stir once a day to prevent mold.
   • You’ll see liquid collecting at the bottom.
7. 
   
8. Strain the liquid after fermentation (cheesecloth or mesh strainer).
9. Store FFJ in a clean bottle in a cool, dark place. It lasts several months.

Application (for cannabis):

• Dilute 1:500 to 1:1000 in water (e.g., 1–2 ml per liter).
• Use during flowering phase as a soil drench or light foliar spray.”

 

[Frosty78]

FFJ
Fermented fruit juice.

Has anyone personally done this? I might have to do a side by side with the same cut this fall.

What came to mind is how its been claimed that sulphur can bring out more skunky terps.

Similarly it make me wonder if ffj can translate as such. I was thinking that it's not so straitforward, that in the process of becoming available to the plant the fruit becomes more of a general sugar/sweetener. For example, banana ffj would not specifically add banana terps or flavor to the flowers.

Bananas come to mind because they are cheap.

But I'm just guessing to be honest. One thing I know from being on here and asking questions or making claims is that I really don't know much.

Thanks for the replies everyone

Great info by bh.
It's about building the microbes in the soil for easier/faster uptake for plants. Think of a symbiotic relationship. Fungi and bacteria making the root hairs/nodes larger and enhancing nutrient and water uptake.
Things like rhizobia bacteria can help uptake nitrogen from the air and fix it in the soil making in ready for plants to access As well as faster absorption/uptake where phosphorus is present.
Alot of farmers innoculate their leguje/grain crops with a specific rhizobia bacteria when planting. Mychorrizal fungi are great too. I'm thinking of innoculating plants, not just cannabis with bacillus amyloliquefaciens which actively suppresses and outcompetes botrytis also it can produce enzymes that collapse the botrytis cell walls. Bh showed it being sprayed. I read an article by an aussie farmer that sprays his vineyard when there is high humidity in the preceding weeks prior to harvest.

I use a fusion of knf, jadam with mine.
I prefer to make fish hydroslate as compared to faa. Much quicker, great for building up your mychorrizal fungi populations and nice phosphorus, nitrogen.
I have made ffj and a fruit jlf. Ffj for foliar, fruit jlf for soil.
I use gypsum in soil buy still spray with cal/phos eggshell/shell grit vinegar foliar.
I have a couple of natural foliar sprays for pests and diseases.
Worm castings in the Mix is great for deterring bad pathogens in the soil and help build native populations of good fungi and bacteria, plus its great in teas to feed plants aswell.
Cover crops help too if you are growing outdoors. Clover and phosphorus fixing cover crops will help, but basically utilising what you have around. If you had camellia trees around I would be composting the flowers making tees or burying them in your hole for phosphorus calcium content they are high in. Putting nutrients in the soil while worms and bacteria and fungi break it down for you for canna or fruit crop food.
as for sulfur, gypsum has a decent amount of that in its make up.
That's all I can think of early Sunday morning. I'm no expert, just a willing student that has a voracious appetite to learn. Check out worlds last hope on ig. That bloke has so much info he has shared for free on his page. Insane knowledge. And slownickel on there for agriculture/canna and scientific data in regards to calcium rich souls and souls in general. That bloke is an Oracle
Hope my ramblings have helped