Horticultural Oil vs Neem Oil for Spider Mites – Which is Best

Horticultural oil and neem oil for spider mites are two popular ways to control spider mites. Both are effective, but some prefer one over the other. Let’s look at how each works and how your choice can help keep your plants healthy.

Spider mite infestations are notorious for being difficult to control. However, many gardeners use one or a combination of traditional and organic sprays, such as horticultural oils and neem oil, against spider mites. Knowing which works best in eliminating spider mites and other pests is important.

If you have a lot of plants or flowers in your garden, you need to ensure that they are not infested with spider mites. Spider mites can be dangerous as they cause your plant to wilt and die when not controlled. 

Neem oil and horticultural oil are two common solutions for spider mite control. Both work by killing and repelling the insect. Neem oil is more effective and has fewer side effects than horticultural oils, making it one of the best options to treat spider mites.

If neem oil is added to your soil, the plant will be less attractive to spider mites and, therefore, less likely to be eaten by them. However, their performance is quite different, so knowing what these compounds do can help you make an informed decision. Here is everything you need to know about these oils:

Neem oil vs Horticultural oil

Spider mites are a common problem in the garden, especially if you’re growing plants from seeds. They can be found on nearly every plant, but they’re especially prevalent on annuals, including tomatoes and peppers.

You will notice spider mites by checking the underside of your leaves or between leaves. These pests look like tiny white balls with eight legs. If you see these pests on leaves, they may be clustered together or move quickly from plant to plant. Usually, their movement causes a web-like pattern on the leaf surface.

Horticultural oil and neem oil are both effective options for spider mite control. They’re both organic and safe for plants, though they have different properties and uses.

What is Horticultural Oil 

What is Horticultural Oil 

Horticultural oil is made from plants and other ingredients combined with water and then heated to make the oil. It is made from plants grown specifically for their use in horticulture, such as basil and oregano.

It comes in various forms, including liquid, gel, and emulsified forms, and it is derived from plants. They are used for various purposes, including moisturizing products for humans or pets.

It is a plant-based oil that has been refined from certain plants. It is typically made from seeds, such as corn or soybeans, and can be used to help plants grow and develop. This oil is often used to prevent insects from eating or damaging plants and shrubs.

It’s also used in the manufacture of perfumes, soaps, shampoos, and other personal care products. Horticultural oil is a great option if you want to ensure your plants get all the nutrients they need without worrying about which type of fertilizer you should use.

It is also known as horticultural oil, plant protection oil, and florist oil. It can be used as a fungicide, insecticide, or herbicide for killing various pests and insects. They are great for protecting young plants from insects like slugs, aphids, sawflies, spider mites, and whiteflies.

What is Neem oil 

Neem oil is a plant-based extract that has a variety of uses. It’s been used in traditional medicine and Ayurveda for centuries. Neem oil is a mixture of water, neem seeds (Azadirachta indica), and other ingredients. It’s used as a natural fungicide and insecticide.

neem oil

Neem oil is a natural insecticide and fungicide. It’s made from the seeds of the neem tree. The oil is produced by pressing the seeds, adding water, and filtering through cloth to extract the liquid. Its anti-inflammatory properties make it ideal for treating joint pain and inflammatory skin conditions like eczema and psoriasis.

Neem oil has been studied for its ability to kill insects on contact (without having to use harsh chemicals), so you can use it as a spray on your plants without worrying about harming them. It also kills parasites in your garden, making it an effective way to eliminate aphids and other pests that might be ruining your plants’ health.

Neem oil also has antioxidant properties that can help reduce the damage caused by free radicals in the body. This means it can improve skin health, detoxify the liver, and protect against cancer. It’s also been studied extensively for its antibacterial properties. 

Neem oil also helps prevent future damage to your plants by inhibiting the growth of fungus and other pathogens that cause decay and rot.

Horticultural oil vs Neem oil for Spider mites

There are many options for treating Spider mites on plants, but you should choose the best option for your specific needs.

Horticultural oil is a good choice if you need to treat Spider mites on plants for a short period, such as when trying to keep them at bay before they can do any damage. It works by causing an allergic reaction in the mites, which causes them to stop feeding on the plant’s foliage. Horticultural oil has also been shown to help prevent new infestations from occurring in the future.

Horticultural oil vs Neem oil for Spider mites

Horticultural oil is a quick fix that kills off all stages of the spider mite and its eggs, so they can’t develop into full-blown infestations. It also kills off other pests like whitefly, so it’s a great ally in your battle against Spider mites.

Neem oil is another option for Spider mite control. It acts quickly and has fewer side effects than horticultural oil. It works by killing off existing infestations by disrupting their reproductive cycle and preventing them from reproducing in future seasons.

Neem oil contains azadirachtin, an ingredient found in neem leaf extract and has been used for centuries by farmers in India to fight off pests like Spider mites. The key thing about neem oil is that it’s safe for humans and animals—so it won’t hurt anyone if it gets onto their skin or clothing accidentally. 

Note: Both neem oil and horticultural oil are effective in controlling spider mites on plants, but they also have a few differences that may make one better, depending on your needs.

How to use horticultural oils

You want to grow your plants as best as possible, but you also want to protect them from pests like aphids, whiteflies, and aphid-like insects, including mealybugs.

You can use horticultural oils to kill spider mites. This is an important step in the process of controlling spider mites. You should wait for the leaves to dry when using horticultural oils before spraying them with oil. 

To use horticultural oils, ensure you have the best oil specifically designed to treat plants and pests. Then, follow these steps:

  1. Purchase your favorite oil from a garden supply store.
  2. Mix 1 part oil with three parts water in a spray bottle.
  3. Spray the mixture onto the affected area of your plant until it’s completely covered (this may take several applications). Make sure you cover all areas where spider mites are likely to hide, like under the leaves.
  4. After treating your plant with this mixture, you should wait 2-3 days before watering again so that the oil has time to work through the soil and into any cracks or crevices where spiders might live or hide.

Best horticultural oil

Monterey LG 6299 Horticultural Oil Concentrate...
  • Insect Killer - this pest control is great for use on aphids, leaf miners, leafhoppers, trips, spider mites, scales, whiteflies, mealybugs and many more. It gives poor control for caterpillars & worms. However, it does control eggs of all insects.
  • Foliage protector - our insecticide is designed for use on a variety of trees & plants including corn, Potatoes, Apples, almonds, avocados, citrus, Peaches, pecans, blackberries, figs, pineapple and more.
  • Dormant & growing season spray - this product is designed for safe use during both the dormant and growing season. Application during each season will increase the effectiveness of the product's insect control.

Monterey LG 6299 Horticultural Oil Concentrate is a premium formulation that helps control many insects on plants and has a broad spectrum of action. This product has been formulated to control various vegetable, fruit, ornamental, and perennial crop pests.

How to use neem oil

Neem oil is a natural, organic spray you can use on your plants to kill spider mites. It’s an effective, environmentally-friendly way to get rid of tiny pests.

Here’s how it works. First, ensure no other plant matter is mixed into the soil—only neem oil and water should be used. Then mix two tablespoons of neem oil with four cups of water and apply it to the leaves and other areas where spider mites are infesting. Make sure to cover every single leaf. 

Leave it on for 24 hours and then rinse off your plants with clean water and allow them to dry in sunlight for a few days before watering again. You’ll notice that your plants will have fewer spider mites after using this method.


  1.  Pour two spoons of pure neem oil into the spray bottle. 
  2.  Add four cups of water to the bottle.
  3.  Shake it up and spray it on your plants or soil or directly onto the spider mites themselves.
  4.  Leave the solution for at least an hour or overnight, then rinse off with fresh water and repeat as needed until you no longer see any signs of spider mites in your plants or soil.

You can also use this solution to protect your plants from various pests, and insects by spraying once a week.

Harris Neem Oil Spray for Plants, Cold Pressed...
  • Ready to Use - Simply shake and spray directly on your plants both indoors and outdoors
  • Cold Pressed Neem Oil - The only RTU on the market formulated using cold pressed neem oil
  • Sustainable & Eco Friendly - Comes with a variety of uses to keep your plants looking healthy

Note: If you are buying a ready-to-use neem insecticidal spray from amazon or other stores, you don’t have to mix it with water, and can be applied directly to plants.

Side effects of horticultural oils 

While using horticultural oils can be great for your garden, it’s important not to use too much of them. Over-applying can cause some side effects.

The most common side effect of using horticultural oils is a lack of vigor in your plants. This means that they may not be able to absorb nutrients well and will have weaker roots. You can prevent this by adding more fertilizer or increasing the water they get throughout the day.

Another common side effect of horticultural oils is increased moisture loss from your plants’ leaves. If you notice this, try adjusting their watering schedule so that they get more water at once but less often than before.

It may be a sign that you’re overusing these oils on your plants if you notice any of these side effects.

  1.  Your plants will look unhealthy and unkempt
  2.  Your plants will droop or shrivel up
  3.  You may notice some small yellow spots on the leaves
  4.  Some of your plants may get burned by the sun

If you notice any other side effects after using horticultural oils, stop applying them and speak with your plant care professional about how to treat them safely.

Side effects of neem oils on plants

Neem oil is a very good thing for plants, but it can also be a bad thing. If you’re using too much of this oil, you might have unwanted side effects.

Neem oil can be toxic to plants, especially if used in high concentrations or for long periods. Even though neem oil can kill bugs and fungi, it can also damage the leaves of your plants. It can cause the leaves to wilt or even die if you apply too much.

Neem oil is great for killing insects and other pests eating away at your plants. It’s also very effective at killing viruses and other diseases that might be causing problems for your plants. So if you’re using too much neem oil on your plants, it’s important to watch out for the potential side effects. 

Some of these issues include:

  • The plant may produce no fruit or produce fewer fruits than it would have without neem oil treatment
  • Your plants are turning brown and dying
  • Your plants are becoming weaker or sickly looking
  • A chemical smell that comes from the soil around your plants

If any of these symptoms appear after using neem oil in your garden, it’s best to reduce its use and talk to a professional about how much neem oil you should be using on your plants, so they don’t get sick or die due to overuse.

horticultural oil vs neem oil

Which is best between neem oil and horticultural oil 

Both neem oil and horticultural oil have their uses, but the answer depends on your goals. Neem oil and horticultural oil are great ways to eliminate unwanted pests. Horticultural oil is an organic pesticide from plants, while neem oil is a natural product used as a pesticide

Neem oil is a natural pesticide that can be used to kill fungi, insects, mites, and grubs. It’s also used to control insect damage in orchards. Neem oil is safe to use around humans and pets; it is the best way to deal with pest control problems in your garden. 

Horticultural oil, on the other hand, comes from plants such as peppermint, neem, sesame, rosemary, and many more. It’s an organic pesticide that kills insects such as aphids, whiteflies, mosquitoes, spiders, and many more. It’s safe for use around humans and pets, making it a great choice if you have small children or pets living in your home. The EPA has approved horticultural oil as an effective pesticide for crop protection.

However, neem oil has several advantages over horticultural oil: it kills pests more effectively than horticultural oil. It won’t be too hard on your plants if you accidentally get some on them, and it will kill any fungus or mildew that might be present.

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