List of Organic Pest Control Remedies
SUFFOCATING SPRAYS such as solutions of Vegetable Oil , and Soapy water suffocate insects
Many small insects, especially thrips and aphids, can be suffocated by being sprayed with a weak solution of INSECTICIDAL POTASSIUM SOAPInsecticidal potassium soap has a high salt content which when sprayed on susceptible insects desiccates and kills them. Being a contact insecticide, the target insect must come into direct contact with the spray, so good coverage is essential for optimum results. Susceptible insects include aphids, mealybug, some mite species, thrip and whitefly. Potassium based soap products available on the home garden market
ORGANIC BUG SPRAY FROM ONION SCRAPS
You can make your own organic bug spray from kitchen leftovers! Simply save your onion skins, peels and ends then refrigerate in an empty margarine-sized tub or ziplock bag until the container is full. Once you have enough, place the onion pieces in a pail and fill with warm water. Soak for a few days, up to a week. You can keep this on the patio in the sun to steep but this is optional. After one week, strain the onion bits out and store the onion water in spray bottles.
Bury the onion bits around plants that are prone to aphids, spiders and other pests. Just spray both house and garden plants with the water to fight aphids and pests. You can also mix your garlic trimmings in with the onion pieces, bugs hate garlic too!
FOR WHITE/BLACK SPOT (mildew) Add *1 litre of FULL cream milk to an *8 litre watering can, watered on Roses or mildew attracting plants, will kill white/black spot
Make the oil spray by blending two cups of vegetable oil with one cup of pure liquid soap, and mix it until it turns white.
Dilute one tablespoon of the emulsion to one litre of water and spray all affected areas thoroughly. Do this during mild weather, because if it’s hot it may burn the plant’s leaves.
Scales shoot a sweet substance called honeydew. Ants literally farm the scale to feed on the honeydew. They’ll pick them up and they’ll move them all over the tree. Honeydew also leads to sooty mould, a black dusty fungus that grows over the leaves and stems. Controlling the scale will also get rid of the sooty mould.
If you only have a small amount of scale, scrape it off with a fingernail or toothbrush. Larger infestations can be controlled by spraying with an oil to suffocate them.
GARLIC SPRAY Chop 90 grams of garlic, cover with mineral oil let soak over night, strain, add 1 litre of soapy water and store in a glass jar with a sealed lid. Dilute one part garlic to 50 parts water for use in spraying.
ALUMINUM FOIL “FOILS” APHIDS Use an aluminum foil much around the base of plants such as tomatoes. The reflection confuses the insects and drives them away.
GENERAL PESTICIDE 3 hot green peppers (canned or fresh) 2 or 3 cloves garlic 3/4 tsp liquid soap 3 cups water Puree the peppers and garlic cloves in a blender. Pour into a spray bottle and add the liquid soap and water. Let stand 24 hours. Strain out pulp and spray onto infested plants, making sure to coat both tops and bottoms of leaves.
AGAINST INSECT PESTS
1. Soapy water (NOT detergent). Try to find one based on caustic potash, rather than caustic soda and mix well with water until frothy (you’ll need more soap in hard water areas). For aphids and other soft-shelled insects
2. Oil sprays suffocate insects. Boil 1 kg soap with 8L of oil, stirring until dissolved. Dilute 1:20 with water just before use. Spray on cool days only.
3. Tomato leaf spray (very poisonous). Cover leaves with water, boil and cool. Use immediately as a general insecticide.
4. Pyrethrum spray. Pick almost-open flowers of Tanacetum cinerariifolium and dry in a cool place. Cover a few tablespoons of flowers with cheap sherry, steep overnight and mix with a litre of hot soapy water. Cool and use within a few days as a general insecticide. Store in a dark place.
5. Wormwood spray. Infuse leaves in boiling water and leave for a few hours. Dilute 1:4 and use for sap-sucking insects.
6. Chilli spray – equal volumes chilli and water blended and sprayed fresh onto caterpillars. (Prevent contact with eyes and skin.)
7. Lapsang Souchong tea – a strong brew (1 tbspn in a pot) deters possums from nipping rose tips
8. Many other materials can be used to make insect sprays. Depending on what you have available, try -quassia, garlic, marigolds, melaleuca, parsnips, turnips, eucalyptus, larkspur, elder, white cedar (Melia azaderach) or rhubarb (Please note: larkspur, elder (except for ripe berries) white cedar and rhubarb leaves are all highly toxic to humans.)
To keep APHIDS and OTHER PESTS off your roses: Finely chop 1 onion and 2 medium cloves of garlic. Put ingredients into a blender with 2 cups of water and blend on high. Strain out pulp. Pour liquid into spray bottle. Spray a fine mist on rose bushes, making sure to coat both tops and bottoms of leaves.
AGAINST FUNGAL DISEASES
The following plants reportedly contain antifungal or antibacterial chemicals that you can extract via infusion to spray onto crops:Chamomile, chives, sheoak (Allocasuarina), elder, eucalyptus, garlic, horseradish, hyssop, melaleuca (tea-tree), neem (Azadirachta indica), nettle (Urtica dioica), and thyme.
This is a standard organic fungicide used to treat a wide range of rots, mildews, and blights. Mix 90g of copper sulphate (bluestone) with 4.5 litres of hot water in a non metallic container and leave overnight. Next day mix 125g slaked lime with 4.5 litres of cold water in a non metallic container. Combine both mixtures by stirring vigorously. Use immediately. An oil like Codacide can be added to increase its effectiveness. Bordeaux spray may clog nozzles. Also, if over-used, it may lead to a build up of copper in the soil and associated toxicity.
OTHER PEST CONTROL HINTS
1. Use companion plants that mask the scent or appearance of desirable crops. Many highly aromatic plants contain chemicals designed to make them unattractive to pests. Camphor, mints, scented pelargoniums, wormwood, southernwood, lavender, balm of Gilead, rosemary, sage and many other herbs have spicy/bitter scents rather than sweet ones. When actively growing amongst desirable crops, these herbs can confuse pest insects by masking attractive scents.
2. Use companion plants that act as trap, sacrifice or indicator crops. Some plants, including nasturtium, mustard and Chinese cabbage, can be used as decoys so that pests attack them rather than your crop. Roses planted along the edges of vineyards deter human predators but also provide early warning of mildew disease!3. Use Physical Pest ControlsThe good ol’ “see ’em and squash ’em” technique still works a treat for snails and slugs. Attract them with beer in a jar sunk into the ground, or lay a wooden plank a centimetre above the ground – they’ll shelter underneath it and you can squash them in the morning. Yellow boards painted with sticky oil will attract aphids. Control ants to reduce aphid and scale infestations on trees – a band of grease will stop them climbing the trunk. Codling moth can also be reduced by banding trees with corrugated cardboard soaked in derris spray.
CONDIES CRYSTALS (potassium permanganate) Condies crystals can be mixed with water and sprayed onto plant foliage to control powdery mildew. They may also be useful as a contact spray for the control of aphids and slugs.Condies crystal spray recipe Mix 30g of condies crystals, 9L of warm water and 30 ml of petroleum oil. Spray undiluted.
GARLIC SPRAY general pest deterrent 10 garlic cloves 5 small hot chillies 3 medium onions 1 litre of water
Mix all ingredients together, bring to the boil and simmer for 10 minutes.Let stand overnight then add 2 tbsp. of milk. Store in labelled glass jars.Use by diluting 1 cup of the mixture to 9 litres of water. Use in all garden sprayers.
WORMWOOD. Cover leaves in boiling water, infuse several hours. Dilute 1 part brew 4 parts water, use as a spray. It has very pungent qualities which makes it useful against soft bodied insects. Good aphid and fly spray. General repellent for fleas, flies, housemoth, ants and snakes.
TO ERADICATE MILLIPEDES OR EARWIGS. 10 ml Eucalyptus Oil 10 ml Biodegradable Hair Shampoo 80 ml water Mix all ingredients together and spray around on the ground at night.
LANTANA/WORMWOOD SPRAY Boil 500g of lantana leaves in 1 litre of water- for 20 minutes. Cool and strain. Spray liberally on affected plants. Most effective against aphids. A stronger spray can he made by substituting wormwood for lantana.
Sulfur is registered as a protectant and erradicant fungicide for the control of powdery mildew on vegetables and ornamentals, rust on vegetables and various fungal diseases on stonefruit. Sulfur is also registered as an insecticide, for the control of mites on vegetables and ornamentals, grape leaf rust mite and grape leaf blister mite on grapes and white louse scale, citrus rust mite and citrus bud mite on citrus. Sulfur should not be applied 21 days before or after an oil spray, in combination with an oil spray or when temperatures are expected to exceed 25 degrees celcius. Sulfur can be purchased as ‘Sulfur spray’, ‘Dusting sulfur’, ‘Powdered sulfur’ or ‘Wettable sulfur’ and can be found in various other products.
Please note : All Natural sprays can be dangerous, so LABEL well, and keep out of reach of children. Also overuse of deterants can upset the natural balance, so use sprays of any sort, sparingly
List compiled by Australian Organic Gardening -APP Advocate Precautionary Principle