Hi everyone, I have been on this forum for a while now, finally made my first time posting, not sure if I post it in the correct forum. I have a question on making our own organic fertilizer, I have been using Dr Earth for a long time, and it is getting to be a bit expensive for a large garden (fruit trees, roses, veggie garden and etc...). I am wondering if any know if I am mixing them correctly to get the ration I need. We also started composting, but it is not generating enough for our garden.

I am looking to make a all purpose that means N-P-K is about the same, By using fish bone meal, alfalfa meal, Feather meal, Potash (KMag), Kelp meal and Cottonseed meal. It might sound a lot to purchase to begin with, but we are spending like $300+ on Dr Earth.... Mine as well mix my own.

What I have come up is their N-P-K value in 100 square feet.

2.5 lbs fish bone meal - 2-10-0

2.5lbs alfalfa meal - 3-2-2

2.5 lbs feather meal - 7-0-0

1 ozs potash (K-Mag) - 0-0-7

2.5 lbs kelp meal - 0.8-0.4-1.6

2.5 lbs cottonseed meal - 3-1-.5

So if I add all of the ingredients together, I should have N-P-K of around 13-13.4-12.1? Am I correct or am I adding it wrong?

Thank you in advance