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best npk for cannabis

Best NPK Ratio for Veg and Flower

Waiakeauka
Well-Known Member
scunkworm
Active Member
scunkworm
Active Member
elduece
Active Member
homebrewer
Well-Known Member

Your info is pretty mixed up there. 3-1-2 for veg though I’ve found 1-1-1 works just as well. 1-3-2 for flower is by far the best NPK ratio I’ve tried thus far.

Too much P locks out Zinc, Iron, and Copper. Not sure where you’re getting N from.

cannabis love
Well-Known Member
Rotweiller
Well-Known Member

Hello Waiakeauka. I’m not sure if this will help you or not but i found this on another website and it made sense to me –
Cannabis requires a 1:2 ratio of P to K throughout all stages of it’s growth.

It’s worth stating for the record the actual ratios of N, P and K that cannabis requires through it’s life cycle:

Vegetative Stage
N – P – K
3 – 1 – 2

Flowering Stage
N – P – K
1 – 1 – 2

Final Flowering Stage
N – P – K
0 – 1 – 2

To translate this into a 12 week schedule for a typical Skunk type such as Cheese or Psychosis would give something along these lines:

Veg week 1: 3 – 1 – 2
Veg week 2: 3 – 1 – 2
Flo week 1 : 3 – 1 – 2
Flo week 2 : 3 – 1 – 2
Flo week 3 : 1 – 1 – 2
Flo week 4 : 1 – 1 – 2
Flo week 5 : 1 – 1 – 2
Flo week 6 : 1 – 1 – 2
Flo week 7 : 0 – 1 – 2
Flo week 8 : 0 – 1 – 2
Flo week 9 : 0 – 0 – 0
Flo week 10: 0 – 0 – 0

This schedule reduces the Nitrogen two weeks into the 12/12 period which will assist in stopping the vertical growth (stretch). It cuts out all Nitrogen after 6 weeks which will result in a less leafy, smoother burning end product with greater density to the flowers. The last two weeks of plain water is sufficient to leach out all accumulated salts and give a clean end product. Three week flush as advocated by some really isn’t necessary if the Nitrogen is cut out after 6 weeks. The people using a three week flush tend to use Canna nutes which have too much N in them for late flowering and this is why they get a benefit from flushing for three weeks.

Hope that makes sense. Despite all the crap the nute companies fill our heads with about the need for all kinds of fancy bottles, you really don’t need any of them. Cannabis is a simple plant, a weed in fact, and all it needs is the correct NPK at the correct time plus a full range of trace elements, that is hard fact and no amount of BS an marketing from the nute companies will ever change that fact.

Anyway Hope this helps you a little bit ? Good luck and Happy Growing

uhavealighter?
Active Member

Hello Waiakeauka. I’m not sure if this will help you or not but i found this on another website and it made sense to me –
Cannabis requires a 1:2 ratio of P to K throughout all stages of it’s growth.

It’s worth stating for the record the actual ratios of N, P and K that cannabis requires through it’s life cycle:

Vegetative Stage
N – P – K
3 – 1 – 2

Flowering Stage
N – P – K
1 – 1 – 2

Final Flowering Stage
N – P – K
0 – 1 – 2

To translate this into a 12 week schedule for a typical Skunk type such as Cheese or Psychosis would give something along these lines:

Veg week 1: 3 – 1 – 2
Veg week 2: 3 – 1 – 2
Flo week 1 : 3 – 1 – 2
Flo week 2 : 3 – 1 – 2
Flo week 3 : 1 – 1 – 2
Flo week 4 : 1 – 1 – 2
Flo week 5 : 1 – 1 – 2
Flo week 6 : 1 – 1 – 2
Flo week 7 : 0 – 1 – 2
Flo week 8 : 0 – 1 – 2
Flo week 9 : 0 – 0 – 0
Flo week 10: 0 – 0 – 0

This schedule reduces the Nitrogen two weeks into the 12/12 period which will assist in stopping the vertical growth (stretch). It cuts out all Nitrogen after 6 weeks which will result in a less leafy, smoother burning end product with greater density to the flowers. The last two weeks of plain water is sufficient to leach out all accumulated salts and give a clean end product. Three week flush as advocated by some really isn’t necessary if the Nitrogen is cut out after 6 weeks. The people using a three week flush tend to use Canna nutes which have too much N in them for late flowering and this is why they get a benefit from flushing for three weeks.

Hope that makes sense. Despite all the crap the nute companies fill our heads with about the need for all kinds of fancy bottles, you really don’t need any of them. Cannabis is a simple plant, a weed in fact, and all it needs is the correct NPK at the correct time plus a full range of trace elements, that is hard fact and no amount of BS an marketing from the nute companies will ever change that fact.

Anyway Hope this helps you a little bit ? Good luck and Happy Growing

I back this statement up for sure! I have seen many experiments where people are trying to compare advanced nutrients to other nutes and this company has always clearly won. Mostly because their nutrients were developed from cannabis and not tomatoes. Maybe we should blend cheaper nutes to the AV’s npk ratios? I believe it would be their n-p-k ratios over anything else. They do also have a lot of boron probably for some good reason.

All of their nutrients schedules for the flowering stage, with additives or without, comes very close to 1-1-2-0.5 Ca-0.25 Mg. At the last two weeks, however, they have it closer to 2-3-4-1 Ca-0.6 Mg. And obviously a flush at the end.

Advanced Nutes seems to have a lot of amino acids, humic acid, sugars, and microbes too.

I also like that they don’t have calcium mixed with phosphorous and magnesium in concentration.

But I will stay away from them and mix up cheap, microbe friendly nutes using AV’s ratio’s.

There have been many people that say you need to use nutes that are designed for MJ, so what is the ideal NPK ratio for Veg and Flower? Many people say…