Decide whether you want to use bone meal or rock phosphate as your phosphorus source. Both are good choices for a homemade phosphorus fertilizer.
Determine the amount of phosphorus you need based on the size of your garden or the specific requirements of your plants.
Collect compost or organic matter, such as leaves or well-rotted manure. You'll use this as a base to mix with the phosphorus source.
n a large container or bucket, mix the measured amount of phosphorus source with the organic matter.
Use a shovel or mixing tool to blend the two components together. Ensure that the mixture is evenly distributed.
Gradually add water to the mixture while stirring. This will help integrate the ingredients and activate the phosphorus source.
Cover the container with a lid or plastic wrap to retain moisture. Store the mixture in a cool, dry place away from direct sunlight.
Allow the mixture to ferment for a few weeks to several months, depending on the specific source conditions. Fermentation helps break down the organic matter
Once the homemade phosphorus fertilizer has fully fermented and resembles a crumbly, soil-like texture,