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Ornamental and useful plants need a lot of nutrients to grow. A liquid manure from nettles is the ideal organic fertilizer. It is very easy to make and, what’s more, it is free of charge.

A self-prepared nettle liquid manure is easy to make, effective and ecological. In general, plant liquid manure contains a lot of nitrogen and potassium. That is why they are a good tonic for almost all plants. Slurry, especially from nettles, provides plants with everything they need to grow and form fruits.

All components of nettle are completely decomposed in the liquid manure. The nutrients can therefore be absorbed very quickly.

Prepare nettle liquid manure: These utensils are needed:
To make a nettle liquid manure, you will need the following:

  • 1 bucket or other container made of plastic, clay or wood that can hold 10 liters (metal is not suitable).
  • 1 kilogram of nettles. The plants should not yet bear flowers or seeds
  • Alternatively, use 150 to 200 grams of dried nettles
  • 10 liters of water: preferably rainwater or stale tap water
  • Possibly a handful of stone meal
  • Fermentation process takes about two weeks

Cut nettles into small pieces, put them in a bucket and pour water over them. Stone meal can be added to somewhat bind the rotting odor produced during fermentation. The container should stand in a sunny place for about two weeks. Stir the slurry once or twice daily to allow more oxygen to enter for the conversion of the plant material. When the mixture stops foaming, the fermentation process has stopped and the manure is ready.

Use sieved nettles as mulch

Sieve out the solid components from the finished slurry. These can either be added to the compost or used as mulch in vegetable or ornamental plant beds. Highly nutritious crops such as tomatoes will appreciate the nitrogenous fertilizer. Tip: You can also place a large cloth in the bucket before preparing the liquid manure. This way, the nettles can be easily removed without sifting.

Dilute nettle liquid manure before use
For application, the nettle liquid manure must be diluted with water. For watering – exclusively in the root area – the mixing ratio 1:10 is suitable, for sensitive plants such as seedlings better dilute in the ratio 1:20. With the liquid manure plants should be fertilized preferably once a week. Such nitrogen-rich fertilization is not recommended for peas, carrots, garlic and onions.

In contrast to liquid manure, a broth or decoction of nettles is used to strengthen plants and control pests such as aphids. To do this, prepare the plant in the same proportion as the liquid manure. The broth is ready after 12 to 24 hours and should be used immediately undiluted, as it is effective for a maximum of three days.

Making plant iuches from “weeds”.
Plant soaks can be made not only from nettles. Some other plants that can be found (almost) everywhere in nature are also suitable for this purpose, such as:

  • Horsetail
  • Goutweed
  • Dandelion