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.