What Plants Not to Use Neem Oil On

Neem oil has been used for centuries as a natural pesticide. There has been a lot of success in keeping the garden there free of pests. Some plants, however, find the odour of neem oil to be offensive.

This begs the question,what plants not to use neem oil on?

Some herbs, including caraway, basil, cilantro, marjoram, dill, parsley, oregano, and thyme, should not be treated with neem oil. It’s important to use caution when spraying neem oil on plants with thin or fragile leaves, such as peas, arugula, lettuce, and spinach.

However, if you aren’t cautious while mixing and spraying neem oil, the leaves of stronger plants might be burned (or even killed).

Neem oil is applied to the leaves of plants to protect them from pests and to discourage insects from making a home among them. For certain insects, the oil coating is fatal, while for others it might harm their cells. On the other hand, neem oil is a solvent and must be used correctly. The leaves of your plants will be harmed if you apply neem oil at the incorrect time. In this blog you get to know about what plants not to use neem oil on.

Garden Plants That Should Not Be Treated with Neem Oil

The active ingredient of neem oil, azadirachtin, is a naturally occurring molecule. You may wait up to a week between applications after spraying it on your plants with soapy water. After ingesting the neem oil, most garden pests will die within a week.

More than 200 different insects, such as the majority of soft-bodied bugs and the nymphs associated with numerous hard-bodied insects, may be harmed or killed by neem oil. There is no need to worry about ladybugs or other helpful pollinators or predatory insects being harmed by Neem oil, since it has been shown via scientific studies to be completely safe for them.

Deciding which plants to spray, how much neem oil to use, and when to spray it might be difficult.

Before we get into these issues, let’s take a closer look at the plants that are sensitive to neem oil and the ones that don’t.

The Neem oil tolerant plants can take neem oil sprays pretty well; however, it is recommended to spray before evening to avoid burns to the foliage and keep a few things in mind in case you spray the oil prior to harvest.

Due to the fact that even when properly prepared and sprayed in the late afternoon, neem oil still burns the delicate foliage of plants, insecticidal soap sprays are more effective than neem oil for neem-sensitive plants. Therefore, AGRIKULTURE TODAY suggests using an insecticidal soap on these plants if they are affected, and refraining from using neem oil spray on plants with thinner foliage. Scroll down to read more about what plants not to use neem oil on.

Also read: How to Make Aloe Vera Juice at Home

What about burning plants using neem oil?

Natural and effective, neem oil may be used to repel insects. However, if you aren’t cautious, you might wind up killing off some of your prized garden plants.

If sprayed throughout the day, especially in the summer when temperatures are high, neem oil may burn plants. It’s best to spray flowers with neem oil in the late afternoon or early evening, when there’s still enough light to see what you’re doing but it’s not too hot yet.

Can Plants Be Killed by Neem Oil?

Leaves may be burned with neem oil. Although it has not been shown to harm established plants, it has been shown to damage plant leaves and reduce growth. Using neem oil on seedlings, or exposing them to direct sunshine, may be fatal. Neem oil may kill off young plants, therefore it’s important to be cautious when using it near seedlings.

Neem Oil Sensitive Plants

You should not apply neem oil to the following plants because of their sensitivity to it:

  • Arugula
  • Basil
  • Caraway
  • Chives
  • Cilantro
  • Dill
  • Kale
  • Lettuce
  • Marjoram
  • Oregano
  • Parsley
  • Pea
  • Rue
  • Sage
  • Spinach
  • Thyme

Also read: How to Use Aloe Vera for Skin Whitening

Formula for Neem Oil Plant Spray.

An outside sprayer, a container of the oil concentration, and some handmade liquid soaps are all you need to apply the neem oil.

  • Put one gallon of water into the garden sprayer.
  • Mix in two tablespoons of neem oil to the bowl of water.
  • Combine with a single teaspoon of organic liquid soap.
  • Before using, give the bottle a good shake.
  • It’s sufficient for creating an effective Neem oil spray.


This is the end of the blog which is what plants not to use neem oil on. It’s not a good idea to use a spray throughout the day. Ever. Your plants will undoubtedly be burned if you do that.

You should do as much research as possible on neem oil before putting it on your plant, but it is an effective pesticide for gardens.

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