Knowledge from Olle Garden Bed: Method of Recycling Food Waste into Fertilizer

If you're seeking ways to reduce your food waste and make a positive impact on the environment, look no further. Recycling food waste as fertilizer is a simple and effective solution to make the most out of your leftovers, especially when using metal raised garden beds. In this blog post, we will provide you with guidance on different methods of food waste recycling, including composting and vermicomposting. The following content also has some reference value for raised garden beds.

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Why recycle food residue?

Food waste is a major contributor to global greenhouse gas emissions. In fact, the United Nations estimates that one-third of all food produced annually for human consumption is lost or wasted. Such a large amount of waste not only occupies valuable resources, but also makes a significant contribution to global climate change. By recycling food waste into fertilizer, you can do your part to reduce food waste and its related negative environmental impacts.


One of the most direct methods for recycling food waste as fertilizer is composting. Composting is a natural process that involves breaking down organic matter into nutrient rich soil, which can be used to fertilize plants and gardens. To start composting, you need a garbage bin or container, soil, oxygen, and a mixture of green and brown materials. Green materials are rich in nitrogen, including food residues such as vegetable peels, fruit pits, coffee grounds, and eggshells. Brown materials are rich in carbon, including dried leaves, newspapers, sawdust, and sawdust.

After preparing the trash can, you need to add green and brown materials in layers, alternating between the two. Ensure to sprinkle some soil on the top of each layer to assist in the decomposition process. Finally, keep the compost box moist but not thoroughly wet, and stir every few days. In a few weeks or months, you will have nutrient rich soil that can be used to fertilize your plants and garden.

Earthworm compost

Another method of recycling food residue into fertilizer is earthworm composting. Earthworm composting involves the use of worms to decompose organic matter into nutrient rich soil. To start using earthworm compost, you need a garbage bin, worms, and a mixture of green and brown materials similar to compost. After preparing the settings, add green and brown layers alternately, just like composting. Ensure that the container is kept moist but not thoroughly soaked, and stir thoroughly every few days. Within weeks or months, your worm will break down organic matter into rich and nutritious soil, which can be used to fertilize your plants and garden.

What are the advantages and disadvantages of composting and earthworm composting?

Composting has several advantages. This is a simple and inexpensive method of recycling food residue, which does not require any special equipment or tools and requires relatively less time and effort. In addition, composting can reduce the amount of waste sent to the landfill and help improve the soil structure and fertility of the elevated bed.

Earthworm compost also has several advantages. This is an effective method of recycling food waste, which takes less time than traditional composting and produces nutrient rich fertilizers, making it very suitable for garden or indoor plants. In addition, earthworm compost does not require as much space or stirring and maintenance as traditional compost.

The main drawback of these two methods is that they require some time and effort to set up and maintain. In addition, if not properly managed, composting and earthworm composting can lead to unpleasant odors and attract unwanted pests.

How to ensure that your compost and earthworm compost can be safely used?

To ensure that your compost or earthworm compost can be safely used, you should always follow the instructions on the fertilizer packaging. In addition, be sure to wear gloves when handling any organic matter and thoroughly wash hands after each use. In addition, due to potential health hazards, earthworm feces should be kept away from children and pets. Finally, make sure not to add any contaminated materials (such as meat shavings, dairy products, or pet feces) to the compost or worm box.

Is there any other way to recycle food waste into fertilizer?

yes! You can also use Bokashi, a fermentation process that uses microorganisms to decompose food waste into compost. This method is easier than traditional composting and earthworm composting because it does not require any stirring, mixing, or maintenance - all you need to do is sprinkle a layer of Bokashi on the food waste and let it sit for two weeks. After two weeks, food waste will be converted into nutrient rich soil that can be used as fertilizer.

In addition, there are several other methods for recycling food waste, such as composting tea and fish vegetable symbiosis. Let's take a closer look at them.

Compost Tea - Compost tea is a liquid fertilizer made by soaking the compost in water overnight and then filtering the mixture. This liquid can be used to fertilize your garden or indoor plants, as well as measures to prevent plant diseases.

Fish and vegetable symbiosis - Fish and vegetable symbiosis is an innovative method of recycling food waste as fertilizer. In this method, fish and plants grow together in a closed system. Fish waste provides nutrients for plants, while plants filter and clean water for fish. This is an excellent way to ensure that your food residue is not wasted!

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Horticultural work:

The last way to recycle food waste is to use it in the garden bed. You can lay food residues directly on the soil or use them to make compost piles. This method does not require any special equipment and is an excellent way to fertilize your garden without spending money. If you are cleaning your garden but cannot recycle everything, hiring skip may be an effective way to ensure that your waste is treated. If you are hiring skip, you may want to know how much it will cost.


Recycling food waste as fertilizer is a good way to reduce the amount of waste sent to landfills and help improve the health of garden or indoor plants. Whether you choose traditional composting, earthworm composting, or one of the other methods mentioned above, you can be certain that you are taking a step towards a healthier environment. So let's start today - your plants will thank you!