Neem Oil is a natural oil made from the pressed seeds and fruits of Neem Trees. Organic, non-poisonous insecticides and pesticides made from neem oil are excellent alternatives to toxic chemicals when treating houseplant pests and diseases. The beneficial ingredient in neem oil is azadireachtin. Azadireachtin, which is an organic product, eliminates plant pests by causing them to stop feeding and reproducing. Neem Oil is especially effective when treating Whitefly, Aphids, Scale, Powdery Mildew, Mites, and Leaf Spot disease. It has also been shown that neem oil deters insects from even getting on your plants.
For use as an insecticide, mix 2-3 tablespoons of neem oil per gallon of water and spray the entire plant. It usually takes two or three applications for the neem oil to do the job and get rid of the plant pests. When using neem oil as a fungicide add two teaspoons of baking soda to the neem oil.