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InvisibleRogerTheRetard
Overlord

Registered: 07/28/17
Posts: 2,545
Loc: Auckland, NZ Flag
Growing cannabis organically indoors. Question about nutrients?
    #26898375 - 08/25/20 09:12 AM (3 years, 5 months ago)

Just trying to wrap my head around growing cannabis indoors organically and was wanting to talk through some things to help me better understand the process.

When growing cannabis organically with super soils and microbe teas, I was wondering about which specific organic additives provide what essential nutrients to the plant and at what stage of growth?

I understand that nitrogen (N), phosphorus (P), and potassium (K) are the main nutrients for cannabis.

And secondary nutrients are...
Calcium is important for cell wall development, can help reduce soil salinity, and improves water penetration when used as a soil amendment.

Magnesium plays a key role in photosynthesis and carbohydrate metabolism, and also helps with the stabilisation of plant cell walls.

Sulfur is necessary for the formation of chlorophyll and the production of proteins, amino acids, enzymes and vitamins, and protects plants against disease.

Boron, chlorine, copper, iron, manganese, molybdenum, and zinc are also mentioned.

TLDR
At what different stages of cannabis growth should one supplement which nutrient? And in what concentrations?

Doing a bit of research on the subject but figured I would ask here as well just to get some feedback.


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InvisibleRogerTheRetard
Overlord

Registered: 07/28/17
Posts: 2,545
Loc: Auckland, NZ Flag
Re: Growing cannabis organically indoors. Question about nutrients? [Re: RogerTheRetard]
    #26898386 - 08/25/20 09:22 AM (3 years, 5 months ago)

I understand that cannabis plants require different ratios of nutrient at different stages of growth.

So soil additives and microbe tea recipes would have to be different for different stages of growth.


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InvisibleRogerTheRetard
Overlord

Registered: 07/28/17
Posts: 2,545
Loc: Auckland, NZ Flag
Re: Growing cannabis organically indoors. Question about nutrients? [Re: RogerTheRetard]
    #26898548 - 08/25/20 11:24 AM (3 years, 5 months ago)

I guess you just water the soil with different kind of microbe teas for different NPK needs at different stages of growth.


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OfflineBrian Jones
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Re: Growing cannabis organically indoors. Question about nutrients? [Re: RogerTheRetard]
    #26898635 - 08/25/20 12:10 PM (3 years, 5 months ago)

You're going to pay a bundle to grow organically. I did it once and could see or taste no benefit, but to each his own.

Most suppliers will tell you use three of their liquid fertilizer bottles that you mix with water. One's for vegetative growth, ones for flowering, and the third one gets mixed in with each stage, at different ratios.


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"The Rolling Stones will break up over Brian Jones' dead body"    John Lennon

I don't want no commies in my car. No Christians either.

The worst thing about corruption is that it works so well,


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InvisibleZifozonke
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Re: Growing cannabis organically indoors. Question about nutrients? [Re: Brian Jones]
    #26898838 - 08/25/20 01:46 PM (3 years, 5 months ago)

I myself much prefer the organic route
Just my personal prefrance
You may be able to just purchase some ready made  but look into making up your own supersoil-its good fun- basically just a mix earthworm castings,compost,kelp,rock phosphate,bonemeal,blood meal,alfafa meal,molasses,de,coir,perlite ect(these are the main components but there are a few others that can be used)-can be simple or complex but its really not that hard and the bonus is you keep recyling your soil after each grow and just keep adding stuff back into  your mix (your npk components) that are used up each time during a grow cycle-so slowly overtime you create/build a living soil thats full of goodness
Head off to ICMag and check out living soils/supersoils&ROLS(recycled organic living soil)
There was another called three little bird soil mix-check that one out.
These once done properly will need not much more than water but plants will always enjoy any additional kelp/molasses teas/foliar feeds along the way to keep them happy
Hope you jump in


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InvisibleEl Torcho
Time for tea?
I'm a teapot

Registered: 04/16/15
Posts: 1,365
Loc: Lone Pine Hill
Re: Growing cannabis organically indoors. Question about nutrients? [Re: Zifozonke]
    #26898925 - 08/25/20 02:43 PM (3 years, 5 months ago)

The general notion is N during veg, P/K during flower.

I agree with Zifozonke, a quality mixed soil shouldn't need much more than water.

Microbe teas are mainly intended for microbes, so I never considered them a nutrient.

Organic shouldn't cost you more than conventional, even at the beginning stage. It only gets cheaper the longer you do it...


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"Well it sounds trivial, but the key insight is . . . . . you don't know shit"
~Dennis McKenna

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InvisibleRogerTheRetard
Overlord

Registered: 07/28/17
Posts: 2,545
Loc: Auckland, NZ Flag
Re: Growing cannabis organically indoors. Question about nutrients? [Re: Zifozonke]
    #26899650 - 08/25/20 11:02 PM (3 years, 5 months ago)

Quote:

Zifozonke said:
I myself much prefer the organic route
Just my personal prefrance
You may be able to just purchase some ready made  but look into making up your own supersoil-its good fun- basically just a mix earthworm castings,compost,kelp,rock phosphate,bonemeal,blood meal,alfafa meal,molasses,de,coir,perlite ect(these are the main components but there are a few others that can be used)-can be simple or complex but its really not that hard and the bonus is you keep recyling your soil after each grow and just keep adding stuff back into  your mix (your npk components) that are used up each time during a grow cycle-so slowly overtime you create/build a living soil thats full of goodness
Head off to ICMag and check out living soils/supersoils&ROLS(recycled organic living soil)
There was another called three little bird soil mix-check that one out.
These once done properly will need not much more than water but plants will always enjoy any additional kelp/molasses teas/foliar feeds along the way to keep them happy
Hope you jump in




Thank you, exactly the kind of overview I was looking for, I seem to have a grasp on things.


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InvisibleRogerTheRetard
Overlord

Registered: 07/28/17
Posts: 2,545
Loc: Auckland, NZ Flag
Re: Growing cannabis organically indoors. Question about nutrients? [Re: Brian Jones]
    #26899824 - 08/26/20 02:38 AM (3 years, 5 months ago)

Nevermind, this link answered all my questions.
https://homesteadandchill.com/how-to-feed-cannabis-organically/


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OfflineOggy
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Re: Growing cannabis organically indoors. Question about nutrients? [Re: RogerTheRetard]
    #26901132 - 08/26/20 06:30 PM (3 years, 5 months ago)

buy some composting worms! that's the best way to do sustainable organic growing because they revitalize the soil. if you get the right worms(and enough of them) you can compost pounds of organic material in about a week!


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InvisibleRogerTheRetard
Overlord

Registered: 07/28/17
Posts: 2,545
Loc: Auckland, NZ Flag
Re: Growing cannabis organically indoors. Question about nutrients? [Re: Oggy]
    #26901146 - 08/26/20 06:44 PM (3 years, 5 months ago)

Quote:

Oggy said:
buy some composting worms! that's the best way to do sustainable organic growing because they revitalize the soil. if you get the right worms(and enough of them) you can compost pounds of organic material in about a week!



:takingnotes:


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OfflineTruncheon Luncheon
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Registered: 04/26/20
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Last seen: 1 year, 8 months
Re: Growing cannabis organically indoors. Question about nutrients? [Re: RogerTheRetard]
    #26906273 - 08/29/20 04:19 PM (3 years, 5 months ago)

Even though you've found some good answers, i will contribute my perspective on the off chance it helps someone.

The bulk of the nutrients comes from the soil itself, not specific additives. Kelp is added to cover 50+ micro nutrients, along with its chelating and water holding effects. The nutrients are then cycled through the soil food web by soil organisms. You only need to worry about not having enough N P or K if your base soil mix sucks.

I would highly recommend Jeff Lowenfels "teaming with microbes" and "teaming with nutrients" if you would like a more in depth understanding of what the rhizosphere is and how it functions.

Supplementation at specific times with specific nutrients is really not necessary in a good organic setup. As long as everything needed is already in the soil, the plant will take what it requires. Think of a buffet. The goal is to feed the soil, and by extension, its inhabitants, and not the plant itself.

When growing anything organically, the most important factor is the quality of your humus. You can buy all the fancy additives you like, throw AACT at it every week and all of the rest, but if your humus is random compost from a garden center, you'll still have a mediocre soil. The best sources of humus are Sphagnum peat moss, good quality worm castings/vermicompost and leaf mould. One (or more) of those, mixed with a high quality thermophilic compost and your aeration of choice, will provide everything a plant needs throughout its lifetime.



Organic growing is cheap and extremely simple, and most amendments offer very little and are entirely unnecessary, as long as you have a good humus with a high CEC and diverse range of microbial life, a small but healthy worm population, whatever other small life forms you can shelter (spring tails, wood lice, millipedes, decomposing and predatory mites)and a good thick mulch. You can't amend your way to a great soil.

As an example my oldest no till style container was mixed 4 years ago, containing very few amendments, having nothing mixed in with it since it's creation, just being mulched with whatever organic matter i've had on hand (lots of comfrey, nettles, straw). It's raised quite a few different crops and i've never had to think about NPK or PH during this time. I do not anticipate having to do anything to the container for at least three more years as long as i keep replenishing the mulch layer and occasionally sprinkling some kelp and vermicompost on top of it. I occasionally abuse it and forget about it outside in the rain for weeks at a time when not in use. Anyone who claims organic is expensive is doing something very wrong, usually by applying the same techniques and mindset that ""conventional"" growers do, with lots of over priced bottles and small pots.

The only amendments I use are:

Malted barley
Kelp meal
Rock dust
Gypsum
Oyster shell flour

And if i can be bothered, a little nettle or comfrey tea, maybe some aloe vera sprayed onto it - At no particular growth stage. Though when i don't do these things, it's still fine, it's more to give me something to do. Horticulture becomes quite dull when all you have to do is add water and check for pests.

People over complicate cannabis, usually for little or no benefit imo.


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