Garden Safe has a guide on how to use nim oil in your garden.
There is a natural, non-toxic product called neem oil.It kills a lot of plant pests and diseases.Unlike pesticides, neem oil does not kill beneficial insects.You can buy pure neem oil or pre-mixed with soap, which will help it mix with water and stick to plant leaves.
The same day you plan on using the spray, mix your batches of neem oil with other ingredients.The oil will start to break down and may lose some effectiveness if you make a batches sooner than four hours ahead of time.You should only make up the amount you think is necessary.
If you are spraying a large garden area or a plastic spray bottle, pour the oil, along with water and dish soap, into a garden sprayer.The strength of the oil affects the ratio of soap to water.You should check the label first if you are using 70 percent or 100 percent.An example is provided by neemking.com.Add the water gradually so the oil emulsifies in the soap first.
It's a good idea to spray your garden plants before it gets too hot or when the temperatures start to cool off.Neem oil should not be sprayed on plants in the heat of the day.
The stems and undersides of the leaves can be covered with a mixture.
Continue applying the oil until pests are gone, and make a new batches every week.When the foliage has dried after a rain, you will need to treat plants again.