Tobacco Leaf Soak 1/2 a cup of loose tobacco overnight in a 2 litres of warm water mixed with a tablespoon of dishwashing soap. Pour this mixture into a spray bottle, using a cloth to filter out the solids. Treat your plants with this organic pesticide every two weeks for maximum effectiveness. Garlic pesticide spray Soak about 100grams of chopped garlic bulbs in 2 tablespoons of mineral oil for one day. Dissolve 1 tsp of fish emulsion in a 500ml of water and add it to your solution. Stir. Strain liquid and store in a glass container (do not store in a metal container). Dilute 1 part solution to every 20 parts of water. Kills aphids, mosquitoes, and onion flies. Tomato leaf spray Add 2 litres of water and 1 tablespoon of cornstarch to a bunch of tomato leaves crushed in your vegetable juicer. Strain it. Keep the unused spray refrigerated. Works well on roses too. Neem Oil It’s native to eastern India and Burma and has been used for medicinal purposes and pest control in India for thousands of years. Insects would rather die than eat plants treated with neem oil.
Mix 15grams of Neem oil with 2 litres of water. Add a little soap to the water. Spray on the whole plant, including the pot. Use a weaker concentration for maintenance. Don't mix more than you need. Neem is also excellent as an: antispectic antiviral anti-inflammatory antiulcer antifungal
Bay Leaf and Peppermint Insecticide Grind up dried bay, tansy and peppermint leaves to a fine dust and mix in cayenne pepper. Sprinkle on plants to deter pests.