Neem oil is an extract Neem, It has some interesting features. This oil is an effective insecticide with antibacterial and antifungal properties.
The main active chemical substance azadirachtin is usually extracted and used as the active ingredient of chemical pesticides. Commercially, you can buy pre-made neem sprays, but these usually include additional chemicals and you have less control over the proportions.
Thankfully, it’s easy to make your own work Get oil Only a few ingredients are used for foliar spraying.
How to make neem oil spray for plants
Once you understand the basics, you can quickly and painlessly make foliar sprays that have leaf gloss and natural pesticides.
This is all the information you need to know How to make a basic neem oil spray.
Choose the right concentration
At first glance, putting neem oil may seem confusing.
There are two main types, 100% raw neem oil and clear hydrophobic neem oil.
For foliar sprays, you always want to get clarified neem, because it removes most of the neem, making it less irritating to the plant surface.
When information is available, you should also always buy cold-pressed neem oil, because neem loses its effectiveness when heated.
You will also find that the concentration of clarified neem ranges from 0.5% to 3%.
This is the amount of azadirachtin still present in the oil, and for most applications you can usually use the lowest percentage.
You can gradually increase the concentration when dealing with 0.5% of neem uncontrollable pests.
Remember, the higher the percentage of azadirachtin, the more likely it is to cause chemical burns to sensitive plants when applied directly.
related: How often do you apply neem oil?
Because oil and water do not mix, you need to make some emulsified water.
Emulsified water is just water added with liquid soap to break the surface tension. We like to use warm water.
Three popular soaps are used in neem spray:
- Dawn dishwashing liquid is the most popular because it is non-toxic when diluted and can be safely used around plants and animals.
- When dealing with pests, insecticidal soap can be used to increase irritation, but be aware that it will leave residues.
- Pure castile soap is a very useful, non-toxic soap used in many cleaning products.
No matter which type of soap you use, you need to mix it at a ratio of ⅓ to 1 teaspoon per quart or 1 to 2 teaspoons per gallon (as long as these ranges are met, the exact amount is not important).
Stir gently to mix the soap without foaming it.
Spray oil pesticides
To make a spray, just add 1 teaspoon of clarified neem oil per quart (or 1 tablespoon per gallon).
Pour the mixture into a spray bottle for a simple and effective spray.
However, you can also add other ingredients to this basic spray.
Essential oils are very effective as insect repellents and can also kill some pests that come in contact with them.
In addition, many experts recommend adding ⅛ or ¼ teaspoon of aloe vera powder to your neem spray because it can help strengthen the plant’s immune system.
Please note that any spray made with aloe vera powder must be used immediately because it will deteriorate quickly.
Get application tips
When using neem foliar spray, you should always follow some basic rules.
First of all, always test a small part of the plants the day before spraying, because plants can cause allergies and skin sensitivities like humans.
Secondly, please note that neem must be sprayed outdoors at dawn or dusk, because if bees or other beneficial insects come into direct contact with neem oil, they will harm them.
Normally, Neem will evaporate within 45 minutes to 1 hour without leaving any residue, but adding other ingredients (such as essential oils) or using insecticidal soap may cause Neem residue or slower spreading.
Third, please note that the strength of the application varies depending on your intentions.
Neem can be used as the gloss of the leaves by spraying a soft cloth or paper towel and wiping the leaves.
However, when used as an insecticide, you need to spray every part of the plant in large quantities, including the underside of leaves, stems, knots and cracks.
If you are dealing with outdoor plants, the only part of the plants you should avoid spraying is the flowers.
Foliar spraying can kill most pests in direct contact, but will not damage the eggs.
Please note that after 14 days of use every other day, Neem begins to significantly reduce the infestation.
You can also spray foliar spray every three weeks, just like in an infestation, to help prevent new bug problems from starting.