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Nettle Fertilizer (Liquid Manure)

The natural cycle in a bucket: giving back to the soil what the plant has gathered from the earth.
Prep Time 20 minutes
Cook Time 13 days
Total Time 13 days 20 minutes
Course Fertilizer
Cuisine compost, Garden
Servings 500 m2

Equipment

  • Large 100-liter barrel (plastic or wood)
  • Sturdy stirring stick
  • Fine sieve or cloth for straining
  • Watering can or sprayer

Ingredients
  

  • 10 kg fresh nettle shoots before seed maturity
  • 100 L rainwater
  • Optional: 500 g rock meal (to bind odors)

Instructions
 

  • Roughly chop the plant parts and fill loosely into the barrel.
  • Fill with 100 liters of rainwater until the material is completely covered.
  • Cover the barrel with a breathable material to keep insects out.
  • Stir vigorously once a day to introduce oxygen.
  • After approx. 10–14 days (once the liquid is dark and no longer foaming), strain through a sieve.

Notes

  • Application:
    • Dilute 1:10 with irrigation water.
    • Use weekly for heavy feeders,
    • every 2 weeks for light feeders.
    • Calculation: Includes a 15% safety margin (target mass approx. 11.5 kg) to compensate for leaching during Atlantic heavy rain events.
  • Safety: Strong inherent odor during fermentation; set up the barrel at a distance from living areas.