How to preserve the richness of nature in your garden garden ?

The aim of organic gardening is to ensure the health and vitality of the soil by excluding synthetic chemicals in the vegetable garden.

Let's discover together the plant purins that respect the earth and the surrounding ecosystems.



In a garden or on a cultivated field, plant slurries help to treat crops in a gentle and non-polluting way.

Some of their odours or active ingredients repel insect pests and kill fungi that damage plant growth.

Natural manures fertilize also fertilise the soil and provide essential nutrients for plant growth.

Large farms decide to use them on their land because they care about the health of the farmers, their families and the health of the soil. Streams and rivers are also preserved by the absence of non-biodegradable substances.



There are several types of liquid manures that can be made for a small garden as well as for a large crop. Nettle, comfrey, horsetail and fern purines are probably the most interesting. But how are they produced and used?

The basic principle for making natural manure is as follows: 1 kg of chopped plants without seeds for 10 litres of rain or spring water, i.e. 100 g of plants for 1 litre of water.

The mixture should be left to ferment for 10 to 15 days in a cool place away from the sun, stirring it from time to time.

It is advisable to use a basin to prepare your slurry. You can then filter it and spray it on your crops by diluting it with water to reach the recommended dosage.



Horsetail slurry: dilute 50 cl for 10 L of water to be sprayed.

Sprayed on the soil, it prevents insect attacks. It accelerates the growth of plants and increases their resistance. Mixed with nettle and comfrey manure, it provides the soil with a significant amount of nitrogen.

Comfrey purin: dilute 50 cl for 10 L of water to be sprayed.

Comfrey manure stimulates the growth of vegetables. It is an effective treatment for the health of foliage.

Nettle purin: 50 cl for 10 L of water to be sprayed.

Nettle manure combats mildew disease in crops. It stimulates the growth of vegetables and the microbial life of the soil.

Fern slurry: 1 L for 10 L of water to be sprayed.

This manure fertilises the soil thanks to its high phosphorus content. It keeps slugs, aphids and wireworms away. It eliminates parasitic fungi.

You can also make purins of garlic, mint, wormwood, rhubarb, lemon balm, horseradish, sage, etc. Each purine has its own properties and appropriate dilution.


Try your slurry on a single plant before spraying it on a whole crop, to test its dosage and effectiveness. This will ensure that it is effective.

Plant manure is beneficial to flowers, vegetables and trees. It is a positive alternative to artificial fertilizers.

What is your natural treatment tip?


*ps: Liquid manure can be stored for several months in a bottle, protected from light. It has a strong smell.

Photo credit: Yorick Chassigneux

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