Some insecticide recipes

Black soap with linseed oil

  • dosage : 300ml per 10 litres
  • good for greenfly
  • dilute with hot water
  • finish with cold water
  • to avoid frothing, add 1 tablespoon of oil

Nettle leaves

  • good for greenfly
  • slurry diluted by 5% of volume

Fern

  • slurry : infusion or decoction
  • dosage: 1kg. fresh or 30g. dry per 10 litres
  • concentrate in Winter for mealybugs and greenfly
  • concentrate when watering soil against slugs
  • dilute by 10% against aphids

Tanasia flowers and leaves

  • slurry, decoction and infusion
  • dosage : 300g. fresh or 30g. dry per 10 litres
  • concentrate against fruit parasites
  • dilute by 10% to purify soil

Rhubarb leaves

  • decoction or infusion
  • dosage: 500g. fresh for 3 litres
  • concentrate against leek worm or blackfly

Walnut leaves

  • decoction
  • dosage : 200g. per 10 litres
  • concentrate against ants

Tobacco/nicotine

  • decoction or infusion
  • dosage : 300g. per 10 litres
  • dilute by 25% against greenfly and caterpillars
  • toxic but biodegradable

Tomato leaves

  • decoction (not boiled)
  • dosage : 100g. fresh per litre
  • concentrate repellant against cabbage butterfly

Small glossary

  • Slurry or maceration : soak 10 days
  • Decoction : soften for a few hours and boil for 15 mins.
  • Infusion : throw the greens into boiling water and leave infuse 24 hrs.

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