Neem oil is derived by pressing the seed kernels of the neem tree. It is very bitter with a garlic/sulfur smell. A single seed may contain up to 50 percent oil by weight. Neem oil is an excellent moisturizing oil and contains various compounds that have insecticidal and medicinal properties. It is used in making shampoos, toothpaste, soaps, cosmetics, mosquito repellants, creams and lotions, pet products like pet shampoo, etc. It also contains vitamin E, other essential amino acids and some percentages of fatty acids. Neem oil is used for treating many skin diseases viz. eczema, psoriasis, skin allergies, etc. and is being studied for making contraceptives in India. A compound found in Neem Oil and neem leaves extract- 'Salannin', has been proven to be safer but more effective insect repellant than DEET. Neem provides protection from not only mosquitoes, but also from biting flies, sand fleas and ticks.
Neem oil has been used for hundreds of years in controlling plant pests and diseases. Many researches have shown that the spray solution of neem oil helps to control common pests like white flies, aphids, scales, mealy bugs, spider mites, locusts, thrips, and Japanese beetles, etc. Neem oil also works as a fungicide and helps control powdery mildew. Some people have also experienced good results with neem oil spray on black spot. Orchid owners use pure neem oil spray to control pests like mealybugs, spidermites, etc. One of the main ingredients in neem seed oil is Azadirachtin that works as an insect growth regulator, thus preventing the larval stage to molt into an adult. As neem is very bitter in taste, it also works as an antifeedant thus making the leaves sprayed with it very distasteful for the bugs to eat, and the bugs choose to starve themselves than eat the leaves treated with neem. Neem oil is bio-degradable and has proven to be non-toxic to mammals, birds, bees or earthworms. It is biodegradable and breaks down easily and quickly. Neem has also proven to be not harmful to adult beneficial insects, since it primarily affects only plant sap-sucking insects, which feed upon the treated plants. However it is recommended that care should be taken not to spray neem oil solution when honey bees and the larvae of beneficials like ladybugs, etc. are present. Neem oil spray like any other oil spray can also burn leaves if sprayed in sun.
There are several products registered in the U.S. containing azadirachtin and Hydrophobic Extract of neem oil.
How to use 100% pure cold-pressed Neem Oil:
Active Constituents of Neem:
There are many active compounds found in the neem tree. The most common ones are:
Azadirachtin: Provides repellant, anti-hormonal and anti-feedant properties
Nimbin: Provides anti-inflammatory, anti-pyretic, antihistamine and antifungal properties
Nimbidin: Provides antibacterial, anti-ulcer, analgesic, anti-arrhythmic and antifungal properties
Nimbidol: Provides anti-tubercular, anti-protozoan and antipyretic properties
Sodium nimbinate: Provides diuretic, spermicidal and anti-arthritic properties
Gedunin: Provides vasodilator, anti-malaria and antifungal properties
Salannin: Provides repellant properties
Quercetin:Provides anti-protozoal, antioxidant, anti-inflammatory and antibacterial properties
Neem seed oil contains the major concentrations of theses active compounds alongwith many fatty acids like oleic acid, stearic acid, palmitic acid, linoleic acid, etc.. Lesser amounts of these active compounds are also found in neem leaves and bark. Source: www.neemfoundation.org and other published articles on neem. This page is for informational purposes only.
Disclaimer: The above suggestions are given based on various studies and experiences of neem users around the world. We do-not guarantee or claim that pure neem oil will work in any or all of the situations mentioned above. These are merely historic uses of neem oil and the information has been put together from the various published media and internet. As with any natural product, use only as needed and discontinue use if any problem is experienced. Neem oil sold by Organeem LLC is pure unformulated neem oil and is not registered by the EPA as a pesticide or insecticide. It has also not been registered by the FDA for treating or curing any disease or for any specific herbal use.