I have been researching the NPK for Marijuana and I run across a basic standard of 20 20 20 for veg and for flowering a NPK 10 30 10. Does this apply to Organics as well? I have read that Organics will never be this high, is this correct? What would be the proper NPK for Organics both for Veg and Flowering. Thanks, Hatch
Don't worry about the absolute numbers, it's the ratios between the numbers that matters. A fert of 20-20-20 has the same balance as a fert of 10-10-10. Most likely the instructions on the first one will tell you to mix only half the amount as in the instructions for the second one, so the amount of nutes per gallon of mixed water is the same. For veg you want the first number (nitrogen) to be at least equal to or ideally higher than the others. For flower you want the first number to be lower than the others.