There are many different methods for making organic fertilizer at home, but here are a few simple steps you can follow: Collect organic materials You can use a variety of organic materials to make your fertilizer, including food waste, leaves, grass clippings, and manure. Make sure that you avoid using any materials that have been treated with chemicals or pesticides. Compost the materials The easiest way to turn organic materials into fertilizer is to compost them. You can create a compost pile or use a compost bin. Make sure that you layer the materials and keep the compost moist, but not too wet. Turn the compost regularly to help speed up the process. Add additional nutrients While composting will create a nutrient-rich fertilizer, you can add additional nutrients by including things like bone meal, fish meal, or kelp meal to your compost pile. Use the fertilizer Once your compost has broken down into a dark, crumbly material, you can use it to fertilize your garden or houseplants.