Best Neem Oil for Plants - Backyard Boss
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Best Neem Oil for Plants

When taking care of plants, every home gardener has to deal with either unwanted insects, fungal growth, or both. If you want to fix these naturally and organically, you need neem oil.

Neem oil has a diverse market that’s time-consuming and difficult to navigate. Luckily, you don’t have to waste your time combing through dozens of products to find the best neem oil for plants. We’ve already done it for you, so all you have to do is read on to find the best product for yourself.

Backyard Boss Top 5 Best Neem Oil for Plants for 2021

Plantonix Organic Neem Bliss Oil - Best Neem Oil for PlantsPlantonix Organic Neem Bliss Oil
  • Available Quantity: 473 ml.
  • Item Form: Spray
  • Item Type: Concentrated
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Milania Premium Organic Neem Oil - Best Neem Oil for PlantsMilania Premium Organic Neem Oil
  • Available Quantity: 118 ml.
  • Item Form: Oil
  • Item Type: Organic
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Bonide Neem Oil Insecticide - Best Neem Oil for PlantsBonide Neem Oil Insecticide
  • Available Quantity: 3.7 Liters
  • Item Form: Spray
  • Item Type: Ready To Use
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Natria Neem Oil Spray - Best Neem Oil for PlantsNatria Neem Oil Spray
  • Available Quantity: 709 ml.
  • Item Form: Spray
  • Item Type: Spray
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Kate Blanc Organic Neem Oil - Best Neem Oil for PlantsKate Blanc Organic Neem Oil
  • Available Quantity: 118 ml.
  • Item Form: Oil
  • Item Type: Cosmetic Grade
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Why You Can Trust Us

We’ve been gardening for years and have combed through websites and stores looking for organic pesticides and fungicides that work. Finding neem oil felt like a miracle, and we want to help you avoid this frustration by giving you the goods right here.

Our search used extensive research, personal gardening experiences, and carefully collected feedback from expert and amateur gardeners. It helped us create a definitive list of the best neem oil for plants. As a bonus, we included vital information on neem oil and linked all our sources to help you continue this study on your own.

Best Concentrated

Plantonix Organic Neem Bliss Oil
    This is great value for money since it’s so concentrated that it can be used for up to 4 gallons worth of homemade pesticide and fungicide mixtures.



Why We Like It: This cold-pressed neem oil concentrate is made for organic farming due to its very high azadirachtin content that increases its potency as an insecticide.

This OMRI Listed oil is 16 oz of concentrate that, based on its recommended formula, you can dilute and use up to four gallons worth of homemade organic pesticide mixtures.

Who Should Buy It: This would be great for those with a considerable bug problem and need a lot of insecticide or fungicide for it.

Best Organic

Milania Premium Organic Neem Oil
    Despite its small size, this bottle contains pure neem oil full of azadirachtin for maximum pest control.



Why We Like It: This contains premium neem oil which is fantastic for plants and contains a high azadirachtin concentration that strengthens its insect-repelling abilities. 

The four ounces of neem oil concentrate in this are also free of GMOs and preservatives. It’s a USDA Organic product that’s delivered quickly and is also risk-free for you, thanks to its 30-day money-back guarantee. It’s also great for exploring the different organic pesticides.

Who Should Buy It: Those looking to experiment with different concentrates and organic pesticides but don’t want to invest in a large batch yet will love this.

Best Ready to Use

Bonide Neem Oil Insecticide
    This formula is a great preventive measure so no pests or fungus make a home in your garden.



Why We Like It: This ready-to-use neem oil spray is a 3-in-1 product that acts as an insecticide, fungicide, and miticide. 

It repels and kills most pests with barely any effort, thanks to its wide grip and detachable spray nozzle that makes it easy to use while walking around. Not only does this treat plant disease and insect breakouts, but it’s also a dormant spray that helps prevent further issues from popping up in your garden!

Who Should Buy It: This brings relief to gardeners who often find pests and fungus damaging their plants and need preventive action.

Best Spray

Natria Neem Oil Spray
    This 24 oz mixture makes it easy to swiftly and efficiently deal with any newfound bug problems.



Why We Like It: This spray is a ready-to-use formula using neem oil as its active ingredient. 

This mixture quickly kills common garden pests while also controlling and minimizing plant diseases like rust and blackspot. Its spray bottle has a comfortable grip and can be easily carried around a garden. It’s great for roses, flowers, fruits, and vegetables. Additionally, it also has OMRI Certification for organic use.

Who Should Buy It: On-the-go gardeners who don’t have time or patience to prep their mixture will have an easy gardening experience with this spray.

Best Cosmetic Grade

Kate Blanc Organic Neem Oil
    This helps plants, people, and pets all benefit from the amazing properties of neem oil so nothing is wasted.



Why We Like It: This bottle contains cosmetic-grade neem oil which is great for skin, hair, nails, pets, and, of course, plants. 

It comes in a brown-tinted bottle with a dropper to protect the oil from UV exposure and contaminants. While gardens don’t need cosmetic grade oil, it comes in handy once your plants are all better and you still have a lot of it. Fortunately, this neem oil won’t go to waste since you can use it for many other purposes.

Who Should Buy It: This is very beneficial for those with a minor bug or fungus problem, so they can use it themselves once their garden is okay.

What Is Neem Oil

spraying the garden
Image Source: Oregon State University via Creative Commons

Neem oil is a rich liquid extracted from the neem tree, commonly found in South Asia. It has an unpleasant odor but is full of health benefits. It’s an effective antioxidant, anti-inflammatory, and antibacterial oil, commonly used in skin and hair care to help with concerns like psoriasis, eczema, wounds, infections, and more. 

Due to the azadirachtin compound in the oil, it’s also a natural insecticide. Azadirachtin works to regulate, repel, and eliminate plant-feeding insects without using harmful chemicals.

Difference Between Organic and Neem Oil

Any food or plant produce farmed without chemically formulated substances is organic. While not all organic pesticides will use neem oil, most neem oil products are safe and organic. Neem oil is generally good for organic gardening, but there are exceptions, with some ready-to-use formulas including chemical pesticides in their mixtures. If you want to check if a product is organic, look for proper certification such as the USDA Organic and the OMRI Listed for Organic Use seals.

Pros and Cons of Neem Oil

Gardenhouse full of plants
Image Credits: photography on Unsplash


Repels pests but not beneficial bugs

Amazingly, neem oil pesticides fight against all kinds of pests, including but not limited to mites, aphids, mealybugs, and flies. The best part? As long as you avoid directly spraying beneficial bugs that don’t feed off of plants, they’ll be safe.

Safe indoors and outdoors

When pests come indoors, the need for an organic pesticide becomes even greater. Luckily, neem oil can work indoors to prevent disease and pests safely and reliably, though it might leave behind an unpleasant smell.


Strong concentrations harm plants

Although neem oil is organic, plants are delicate and won’t survive high neem oil concentrations. A little goes a long way, and it’s best to be conservative with your formula’s strength. Even commercial formulas avoid going higher than 3%.

Should be used sparingly

Neem oil is still a pesticide, and it’s best not to overwhelm plants with it. Try to use any pesticide only as a last resort after other natural insect-repelling techniques fail. If it’s not made for dormant spraying, don’t make a habit of using this regularly.

Diluting and Mixing Neem Oil

spray bottle around plant germination station
Image Credit: Stella de Smit via Unsplash

Ready-to-use formulas are unbelievably convenient but knowing what you’re using in your mix and having control over the mixture is just as valuable. To make a homemade pesticide, follow these simple steps and use these three ingredients: neem oil, warm water, and non-toxic liquid soap.

  1. Mix a gallon of warm water with a teaspoon of liquid soap. It allows the oil and water to mix later on.
  2. Add 1.5–2.5 Tbsp of neem oil and shake well before transferring to a spray bottle.
  3. Spot test the mixture on a plant and observe it, adjusting accordingly.
  4. When it’s done, wait until the target plant is out of direct sunlight before spraying and leaving it overnight.

Can Rosemary Oil Be Used as an Alternative

Rosemary plant
Image Credits: Babette Landmesser on Unsplash

Rosemary oil is a wonderful ingredient in organic gardening as a herbal insecticide. If neem oil is out of reach, it’s a great alternative. 

This powerful oil contains anti-microbial and fungicidal properties that naturally drive away moths, fruit flies, mosquitoes, and many other pests. 

It’s completely safe for all plant varieties, and you can make it with a formula similar to homemade neem oil mixtures. However, it’s limited in the kinds of pests it drives away and isn’t as strong as neem oil-based pesticides and fungicides.

How We Picked

To have the most accurate results, we followed a rigid research process. It involved market analysis, consumer insight, expert advice, and private trials.

We started by studying the neem oil market, with some products jumping out more than others thanks to their unique features. We also listened closely to the recommendations and comments of expert and amateur gardeners on the different neem oil products. It allowed us to narrow down our shortlist to test the promising neem oil products and formulas.

This first-hand understanding of each item helped us choose five standout formulas and concentrates that we’re confident will positively impact an organic gardener’s journey.

Our Pick Of The Best Neem Oil for Plants

Choosing one out of these five amazing neem oil concentrates and formulas was a challenge because they each performed wonderfully. That said, one stood out from the rest, and it was the Plantonix Organic Neem Bliss Oil.

This concentrate is a very powerful and high-quality oil that specifically benefits organic gardening and farming. It’s only 16 oz, but it gets gardeners very far and can be a huge help in keeping your plants healthy.

However, we recognize that not everyone wants an oil concentrate. Even so, you still don’t have to look far because everything you need is on this list.