i was wondering if the fertilizer i got would be ok for flowering, its npk is 18 18 21, or should i go back and get something with like 15 30 15 instead?
i just got the same stuff (for tomato plants), i am in the veg stage, was this fert a good choice? and will it also work when im in flowering? thanks -sandstorm412
I always try to buy complete fertilizers with all the micronutrients as well as the macronutrients nitrogen phosphorus and potassium. best i can summarize from what i've read is you want a high nitrogen value for vegetative growth (first number, 25-10-10 for example) and a high phosphorus value for flowering (second number, 10-25-10 for example). i'm sure others here have much better/more advice to give than me though http://en.wikipedia.org/wiki/Fertilizer
i used fox famrs grow big for veggie and went back to home depot for the flowering ferts at 15 30 15, they workin so far but only 1 feeding so far.
The key to a flower fert is low N. It should be high in P and could be low or high in K depending on the formulation.
is that because you don't want your plants growing much taller or producing much "green" material, but more pistils and bud material instead? or is it because that's actually just what MJ prefers during flowering?
'Sup pungant . U have the general idea except too much nitrogen will inhibit flowering and will take forever, or so im told. Check out the link in my sig about diagnosing plants. Theres a info in the deficience N P K section. Hope it helps ya. Peace, e
What would be a min p level.and what would be max..im guessing around 15 to 40...im using a 10-15-10 with a teaspoon of molasses for mang and iron.organic grow
There isn't a minimum or maximum per se. Keep in mind that these NPK numbers represent the percentages of nitrogen, phosphorous, and potassium in the entire product. So, for a concentrated fert that needs to be mixed with water you expect high numbers, because you will be diluting it (such as one teaspoon to a gallon of water or whateer the instructions say). So after mixing, the actual fertilized water no longer has those same NPK numbers but only a fraction -- but the ratio remains the same. That's why pre-ferted soil can have really low numbers like 0.2-0.1-0.1 and still be bad for young MJ plants. So back to your question, the numbers are relative to how it is delivered to the plant. If one fert is 20-20-20 and you are supposed to mix one teaspoon per gallon and another is 10-10-10 and you are supposed to mix two teaspoons per gallon, your ferted water ends up with the same concentration of N, P, and K. Best to think of NPK numbers as proportions of the nutrients to each other, not necessarily an "amount" of each fert.
dang toasty ur just full of info, heres another one for ya, since i was giving my plants 6-4-4 for veg from fox farms, and now im giving the one and only plant left (only female i got) 15-30-15 will that have an adverse effect on how much ive been watering and feeding my plants, so say i had a schedule for the 6-4-4 would that schedule still work with the 15-30-15 or would it be kind of overdosing the plant on food?
