How to make liquid fertilizer from kitchen waste

Are you searching for a low-cost, yet efficient organic fertilizer to use in your gardening? If yes, then you must try out this homemade liquid fertilizer. It is the best fertilizer for all types of plants, especially the ones in your garden. You will be surprised to see how effective and easy it is to make this.

Kitchen waste, food scraps, and peels are the makings of fertilizer. Because of the high nutrition level in kitchen waste, it is possible to make quality fertilizer at home. Several methods can be followed but all include nutrient-rich organic matter like grass clippings, weeds, old leaves, or vegetable waste. Kitchen waste contains nitrogen (2%), phosphorus (0.4%) and potassium (1.33%). Home-made liquid fertilizers are rich in these nutrients plus several other macro and micro-nutrients that promote healthy plant growth.

How to make liquid fertilizer from kitchen waste

Materials Required

  • kitchen waste
  • grass clippings
  • leaves or hay
  • compost or organic matter
  • water
  • container for waste
  • nylon mesh or cheesecloth

Directions for preparation of liquid fertilizer:

  1. Collect all the kitchen waste and grass clippings in a container covered with nylon mesh or cheesecloth. If hay is available, spread it over the organic matter to act as an absorber. This will prevent the ammonia from escaping into the atmosphere. Keep ready at hand all other materials necessary for making compost like leaves, compost pile etc.
  2. Bring one-gallon (3 lt.) of water to boil and add vegetable matter (food scraps or peels) to it; cover pot with lid leaving a small opening; simmer for two hours low heat; turn off stove and let it cool.
  3. Add two to four ounces (.08 lt to .16 lt.) of compost activator and mix gently with a spoon for a minute or so. Add half gallon to one gallon (1.9 lt to 3.8 lt) water and mix well using a paint stirrer or any other stirring instrument that can reach into the corners of the container. Mixing must be thorough; otherwise, the fertilizer will not turn out uniformly rich in all nutrients throughout.
  4. Now you are ready with your home made liquid fertilizer. its time to pour it through the pulp in an open space like on top of your compost heap or anywhere else where there is some greenery growing like grass etc., which will act as a filter. In about a week, the fertilizer will have been filtered and can now be used as a nutrient rich plant food.

Alternative ways to make organic liquid fertilizer at home

Here’s a different, creative way to help your garden grow. Use kitchen scraps instead of paying for expensive and potentially toxic commercial fertilizer. The kitchen scraps can be used for compost or simply left to rot. Here’s how to make liquid fertilizer from kitchen waste at home.

How to make Banana Peels liquid fertilizer

Banana peels are used in many countries as organic fertilizers. The results of our research show that: Banana peels contain a large number of nutrients, including calcium, phosphorus, magnesium, potassium, iron, and copper. These nutrients are useful for the growth of plants. Moreover, banana peels are rich in organic matter and water, so they need little time to rot in the soil and can immediately be used as organic fertilizer.


Banana peels should be kept in any bucket and fill with water so that they can be submerged in water for a week. After a week, remove the peels from the water and use the remaining water as liquid fertilization.

How to make Coffee Grounds liquid fertilizer

Coffee Grounds liquid fertilizer is a natural organic fertilizer extracted from the ground coffee beans after the roasting process. The raw material is the coffee grounds, which are a by-product of the coffee processing industry, and it has its own characteristics. The current method of disposal is generally to landfills or incineration. The solid portion can be used as compost.

It turns out that coffee grounds are not only good for your morning wake-up, but they’re also great for your garden too. The next time you brew a pot of coffee, think about using the leftover grounds to fertilize your plants. Coffee grounds can provide your plants with essential nutrients and improve your soil’s texture. Coffee grounds also help keep pests away!


For 2 to 3 days, coffee grounds should be kept in a bucket and fill with water. Liquid fertilization can be done by straining the water and using it as fertilization. The coffee ground’s remaining pulp can be used to make compost.

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