Garden Calculators
Let TeaLAB do the math!
Use this calculator is to help determine your soil amendment needs (they may take a second to load.....sorry). This may not work on some mobile phones so a computer/laptop may be ideal for this process.
Enter your information in the white boxes (there is no cursor, just click on the box and type your amount). Wait a moment while the magic occurs, and your results will be calculated in the table. If you mistype something into the table, just refresh your browser and start over.
The application rates are full strength for each individual amendment. If you are using two amendments that both provide nitrogen, Alfalfa and Cotton Seed Meal for instance, divide the required amount by 2. If you are using 3 amendments that provide the same nutrient, divide the required amount by 3.
Enter your information in the white boxes (there is no cursor, just click on the box and type your amount). Wait a moment while the magic occurs, and your results will be calculated in the table. If you mistype something into the table, just refresh your browser and start over.
The application rates are full strength for each individual amendment. If you are using two amendments that both provide nitrogen, Alfalfa and Cotton Seed Meal for instance, divide the required amount by 2. If you are using 3 amendments that provide the same nutrient, divide the required amount by 3.
Use this calculator once you have tested your soil and know how many pounds per 1000sf of NPK you need to apply.