Ok, back on topic of growing better cannabis here. Below is an article of an experienced grower and researcher who has determined the ratios for NPK as it relates to cannabis in its various stages.
Do any of you have feedback on this?
↑
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 that you can use bloom booster that are high in Phosporus and other say you need more Potassium in flowering. What is ideal more Phosporus or more Potassium for flowering? Also what is the ideal amount of Nitrogen for flowering.
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
