How to Use Neem Oil on Plants: How Much & When to Apply


Neem oil can be used to keep your indoor or outdoor garden safe from harmful insects and disease. The vitality of your plants depends on your ability to ward off these threats. 

If you are in search of a natural, chemical-free way to protect your plants, then neem oil is the way to go.

If you’ve never heard of neem oil or you’re not sure how to use neem oil on plants, keep reading. We’ve got it all covered in this guide.

What Is Neem Oil Spray for Plants?

Neem oil spray is a powerful pesticide and fungicide. Its recognition as a pest control agent that dates back hundreds of years to when ancient farmers used it to protect their crops. The active ingredient in neem oil is Azadirachtin and it is most responsible for fighting off harmful insects. 

The oil is harvested by pressing it from the seeds of neem trees. Also known as Azadirachta indica, these trees originate from regions of India. 

Neem oil spray can appear in shades of yellow, brown, and red. It has a very pungent scent that is often described as a mix of garlic and sulfur. 

The best neem oil for plants will eradicate leaf-munching bugs from your garden and curb diseases.  

Is Neem Oil Organic?

Pure neem oil is completely natural and organic. It is harmless to soil and non-toxic to humans, animals, and most plants. Its profile as a powerful, eco-friendly pest repellent makes neem oil a unique commodity in the pesticide world.

What Is Neem Oil Used For?

Due to the blanket protection it provides plants as a fully natural compound, neem oil is a treasure to many organic gardeners.

Its primary use is to repel or kill mites and vegetation-damaging insects such as aphids. The health of your plants hinges upon your ability to keep these pests far away. Neem oil can evict pests by suffocating them or disrupting their eating patterns and hormone systems.

Neem oil also possesses fungicidal properties. It can be used to prevent or treat fungal infections such as powdery mildew and scab.

How to Use Neem Oil on Plants

There are commercial neem oil sprays available which are ready for use as soon as you pull them off of the shelf. Though convenient, these products are flawed because they have a lower concentration of the vital ingredient Azadirachtin. This makes them less effective.

Your best option is to find a pure, organic, cold-pressed neem oil. 

Once you obtain a quality neem oil you will need to create your own mixture using a teaspoon of the oil, a quart of warm water, and ⅓ teaspoon of dish soap. This produces a potent and effective pest deterrent. If you need to create a larger amount of solution you can, just use the same ratios. 

You will need to use a garden sprayer to apply the mixture to your plants. A regular spray bottle can also suffice. 

How Much Neem Oil Should You Apply?

Some plants are sensitive to neem oil, especially when exposed to large quantities. To avoid potentially harming or even killing your plant, you should first apply the solution to a small leaf and observe how it reacts. If there is no sign of damage 24 hours after application then it should be safe to use neem oil on the whole plant. 

After confirming its tolerance to neem oil, you will spray the entire plant. Be sure to cover the undersides of the leaves. 

When to Apply Neem Oil

The interval for which you will apply neem oil to your plants depends on its intended use. For preventative purposes, you should spray your plants with neem oil once every 10 days.

If treating an existing pest infestation you should apply neem oil at least once per week, possibly more. This will keep the pest population down and safeguard your plants from disease. 

Spray your plants with neem oil only during the morning or evening hours. Avoid application in direct sunlight or extremely high temperatures as this can scorch the plants. 

Best Neem Oil for Plants

There are many neem oil products on the market and they come in an assortment of concentrations. Liquid concentrates are generally your best option. 

Premier Neem Oil Products From Cannaporium

Ready to thwart plant eating pests with neem oil? Don’t settle for anything but the best pure neem oil available from Cannaporium. Your plants will thank you for it.


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