This is how yeast activates the processes in compost

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Author: Laura McKinney
Date Of Creation: 5 August 2021
Update Date: 1 July 2024
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Yeast is a natural composting accelerator

This is how yeast activates the processes in compost

Yeasts are well-known in alcohol production, but in well-aerated compost yeasts have positive effects on the decomposition processes. With a self-made solution you can activate your compost. Alternatively, an approach of different herbs is suitable.

Effect of yeast

Yeasts naturally occur on the skins of fruits. On the compost yeasts are an important part of the chemical decomposition processes. They are active at temperatures around 20 degrees Celsius and need sugar for their metabolism to work.

The metabolism of yeasts works with or without oxygen. If the compost is not well aerated, yeasts provide a fermentation. In a well-ventilated substrate, the yeasts produce not only CO2 but also water and heat, which significantly accelerates the conversion process. At the same time, the yeasts multiply to a high degree with high oxygen availability, which in turn positively influences the decomposition process.


The active contribution of yeast in the compost, the heat generation can be additionally promoted. It creates temperatures of more than 60 degrees Celsius. From this temperature, the hot rot takes place in the biological waste products are degraded faster. Another advantage of high temperatures in compost is the fact that the seeds of unwanted weeds are killed. Bacteria and mold spores are rendered harmless.

Recipe for a yeast sugar solution

In the spring you can activate your compost with a solution of sugar and yeast and accelerate the processes. The outside temperature must be at 20 degrees Celsius for the yeasts to be active.

You need:

Natural rotting accelerators

Herb jellies act as a decay accelerator, because they activate life in the soil. The skins contain a high proportion of bacteria and yeasts that decompose the plant material. The manure humidifies the compost at the same time so that the microorganisms can work better. Incidentally, the formation of rot is prevented.


Collect nettles and dandelion leaves in spring and place the parts of the plant in a bucketful of water. The container should be kept in a warm place for at least two weeks. Herbs such as comfrey, valerian, yarrow or the leaf fronds of fern plants can be added to the manure. They contain minerals and vitamins and supply the compost with bioactive substances.