Nettle liquid manure: an excellent natural fertiliser also for cannabis plants

Nettle liquid manure has been used for a long time as an organic plant fertiliser and was already used by our ancestors. Nettle liquid manure is also helpful in the fight against various pests, especially aphids. It can be used for balcony and garden plants as well as indoor plants, but especially for cannabis. The beauty of this natural product is that it is free, because stinging nettle grows wild in abundance almost everywhere in nature. Especially outdoors, but also indoors, stinging nettle liquid manure is a very good and strengthening cannabis fertiliser for growers who want to produce their own fertiliser purely organically and with full self-control. Nettle liquid manure can also be used in addition to many fertiliser systems as a plant and root strengthener. The liquid manure is perfect for the growth phase of cannabis plants and contains many trace elements and nitrogen. If you add horsetail to the liquid manure, you get a real biological power fertiliser that makes the plants strong and protects them from diseases.

Make stinging nettle liquid manure

The preparation of stinging nettle liquid manure is not difficult and completely uncomplicated. The following things are needed for this:

• Gloves
• Scissors
• fresh stinging nettle, if desired also horsetail
• Water
• A bucket

Metal containers should not be used when preparing the stinging nettle liquid manure, as this can lead to chemical reactions with the liquid. First fill the bucket with coarsely cut stinging nettle (+ possibly horsetail). The nettle plant can be used completely, i.e. leaves and stems. Now fill the bucket up to the brim with water. It is best to use rainwater for this. Then cover the bucket with a grid or net to prevent animals from falling into the bucket and drowning. In addition, a cloth can be placed over the bucket to prevent dirt from getting into the slurry.

The liquid should now be stirred daily until it starts to ferment. By stirring, enough oxygen gets into the liquid, which is needed for the fermentation process. As soon as the mixture begins to ferment, bubbles and foam form and a rather strong smell develops. This is why many gardeners like to stash their nettle liquid manure in the far corner of their garden. If you put the bucket in the sun, the fermentation process goes faster. A few drops of valerian in the broth can reduce the smell somewhat.

After approx. 2-3 weeks, no more bubbles form. The liquid has turned dark and can now be used as natural fertiliser. The tub with the liquid manure should always be loosely closed (-> danger of explosion with airtight closure!).

How do I fertilise with nettle liquid manure?

Larger plants can tolerate a higher concentration of the nettle liquid manure, so more of it is added to the irrigation water than for small and young plants.

• Seedlings and young plants are fertilised with 1 part liquid manure and 20 parts water -> 0.5 litres liquid manure for 10 litres water
• Large plants receive a ratio of 1:15 to 1:10, depending on the variety. They should not and do not need to be supplied with additional slurry every time they are watered. In between, water again and again with water only.

The liquid manure is also efficient when it is diluted and should of course never be used pure, because it would then be far too strong for the plants and they would burn.

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