What plants not to use neem oil on? 5 things you should know

Using neem oil is a natural solution to help plants get rid of pests.However, there will be plants that do not need this oil and what plants not to use neem oil on? Let’s read this article to better understand how neem oil works as well as using oil. In addition, you can also know which plants do not need neem oil that can still get rid of pests. 

What Is Neem Oil?     

Neem oil is prepared from the seeds of the Neem tree. This is a tropical plant that appeared in India. Neem oil is yellow, smells like mustard or garlic.

Neem oil is turned into a safe, natural pesticide. Azadirachtin contained in Neem oil is an important ingredient that can help prevent pests from destroying plants. While there are other components that have insecticidal properties.

Neem oil in high concentrations can kill insects in general. But, low concentrations can cause insect pests to eat and will suffer from anorexia, stop eating, growth disorders and reproductive disorders that cause them to gradually die.

What Is Neem Oil Used For?

• Neem oil is a means of preventing worms from destroying trees. Neem oil when sprayed will stick on the surface of the leaves and stems. Insects in the leaves eat oil, then lose their appetite and do not want to eat. So, it gradually starves and dies later.
• Neem oil as a measure to prevent ovulation. Neem oil has a mechanism that prevents the process of pairing insects and does not allow females to produce eggs. So it loses the desire to reproduce.Thereby affecting the life cycle of insects.
• Neem oil is a registrant of larval growth. When the larvae of insects eat parts of the plant that will be stained with Neem oil, the substance Azadirachtin will enter the body. This active ingredient will cause the activity of ecdysone to be inhibited and this larva does not molt, then dies. If the concentration of Azadirachtin is low, the larva enters the pupal stage but reduces the life expectancy of the insect and causes malformations and is incapable of reproduction.

  

What Plants Not To Use Neem Oil On?

Scallions

First on the list of “what plants not to use neem oil on” is Scallions. Some plants will be suitable for using oil wedges but for Scallions it does not need neem oil to kill pests. In general, the leaves of Scallions are very thin, so it is not suitable for using this oil. To control pests in green onions without using oil wedges, it is only necessary to fertilize and spray when it is cool.

Bok Choy

Bok Choy is also a plant with thin leaves, so it is very sensitive to neem oil. If this plant is sprayed with neem oil, there is a very high probability that the leaves will burn. For better insect control, it is recommended to use a regular insecticide spray instead of neem oil. Even with proper oil mixing and thin spraying, neem oil can burn the thin foliage of the Bok Choy plant.

Chives

A plant in the same family as Scallions, Chives is also sensitive to neem oil because its leaves are very thin. In particular, if sprayed on thin leaves, it will cause the plant to die completely. Therefore, when growing Chives and for good pest control, neem oil should not be used.

Rhubarb

Rhubarb is a vegetable eaten daily, they are used as a nutrient-rich food whose scientific name is Rheum rhubarb. Since it is a vegetable, this vegetable does not seem to be suitable for neem oil. When using neem oil, Rhubarb leaves can burn. Therefore, when you want to control pests, the use of neem oil is not suitable.

Fennel

What plants not to use neem oil on, Fennel is one of those. Fennel is a spiced vegetable in the same family as dill, celery and carrots. The leaves of these plants are also extremely thin, so it cannot withstand contact with neem oil. Therefore, when caring for repatriation, be careful to avoid killing pests with neem oil.

Shallots

Shallots are onions that grow in clusters with small stems. It has an onion-like appearance but the taste is more spicy. Like Scallions, the leaves of shallots are extremely thin, so contact with the solution of neem oil is inappropriate. Therefore, during the process of planting and caring for shallots, you need to avoid the use of neem oil to kill pests.

Marigold

Marigolds are flowers native to Mexico. They are herbaceous, erect and often heavily branched to form each bush with branches stretched out. The leaves are twice-pinnate, serrated edges, often alternately or symmetrically and in each axle. And its extra branches will grow. It is because of these characteristics that this flower is very sensitive to neem oil. Marigold leaves and flowers appear to be burned by neem oil. Therefore, when caring for and eliminating pests, the use of neem oil should be avoided.

Rutabaga

Rutabaga is a tuber whose family is cabbage. More specifically, it is a tuber that is the result of hybridization between species such as radish and cabbage. As mentioned in this article, varieties with the family cabbage will often be very sensitive to neem oil. So, among the what plants not to use neem oil on, it will be Rutabaga. Therefore, be careful not to use neem oil for houseplants to kill pests on this plant.

Watercress

Watercress is a small, green leafy vegetable with a rounded stem. Watercress shares a kinship with kale, Brussels sprouts and cabbage. Speaking of which, you will probably realize that this plant is very sensitive to oil neem like most plants of the cabbage family. So, among the plants that are not suitable for neem oil fungus gnats, please consider Watercress.

Kohlrabi

Kohlrabi is an edible plant with a rounded fat appearance and a spherical shape. Inside the kohlrabi root, there is a lot of water, so it is very cool and sweet. Kohlrabi is a plant of the wild cabbage family. Like most plants of the cabbage family, kohlrabi is particularly sensitive to neem oil. So, remember not to use neem oil to care for or kill pests on plants.

Turnip

Turnips radish is the root of the radish plant of the species Brassica rapa. Turnips radish is also a regular vegetable that many people choose to grow in their gardens. Like many radish plants, it seems inappropriate to spray neem oil on the plant. This is one of those plants not to use neem oil on. So, when growing your own turnip at home, remember not to use neem oil for pest eradication.

Parsnip

Parsnip is a root vegetable that is related to parsley and carrots. All of these plants belong to the Apiaceae family, so they are very sensitive to neem oil. So, this is a plant that doesn’t use neem oil on. Be aware of the use of neem oil for Parsnip.

Tomatillo

Although Tomatillos look like green tomatoes, they are not tomatoes. Tomatillos have a thin outer green shell, so when sprayed with neem oil, they can be burned. So, tomatillos are among the tomatoes that can’t be seasoned.

Dill

Dill is a spiced vegetable native to the Mediterranean coastal countries. It is a herbaceous plant that lives all year round with an average height of 60-90cm. The stem is smooth or notched longitudinal and the roots are cylindrical.

The leaves are 3 times pinnate with large developed kelp. The reduced leaves are coniferous in appearance and have no stems. 

Dill leaves are very thin, so if you spray neem oil, it can cause burning of the leaves and the stem. Therefore, note that when growing neem at home, it is not recommended to kill pests with neem oil.

Tarragon

Tarragon, also known as the herb. The famous varieties of tarragon are usually in France and Russia. The special feature of this plant is that the whole plant is fragrant because it contains a high concentration of essential oils. However, the leaves of Tarragon are very thin, like dill, so the use of neem oil can be dangerous for the plant. The plant can die completely if you spray a large amount of neem oil. Therefore, it is best not to use neem oil for pest control on Tarragon plants.

Swiss Chard

Swiss Chard is a thin-leaved mustard that is not suitable for using neem oil because the leaves are highly flammable. Among the plants that don’t have to use neem oil is Swiss chard.

Melon

When growing melons, especially during the seedling care phase, you should avoid the use of neem oil because it can cause the plant to burn and die. Since at this stage the seedlings are very thin and weak, they cannot withstand the effects of neem oil.

Mustard

Mustard tree is also a common name for several species of plants in the family Brassicaceae, belonging to the genus Brassica and the genus Sinapis. The stems and leaves of mustard are quite fragile, so it seems inappropriate to spray neem oil. It should be noted that you should avoid the use of neem oil during the cultivation of this plant.

Leeks

Another on the list of what plants not to use neem oil on is Leeks. They are herbaceous plants as thin as Scallions. So this plant is not suitable for spraying neem oil.

Marjoram

Marjoram is scientifically known as Origanum majorana and this is an herb of the mint family. The leaves of this plant are green, small and thin, so they can burn if sprayed with neem oil. So, remember to avoid killing insects and pests with neem oil when growing marjoram.

Caraway

The flowers of the caraway plant are white and thin. Therefore, if neem oil is sprayed on the plant, it can cause death. Thus, caraway is one of the plants that is not suitable for using neem oil.

Pea

Pea plant is a liana plant with a thin stem, so it is not suitable for spraying neem oil to kill pests. With thin green leaves, when sprayed with a quantity of neem oil, it can cause a plant fire, indicating that the plant will have yellow leaves and may die slowly.

Tansy

The flowers of the Tansy plant are very similar to caraway. Because of the thin and small flower characteristics, it is very dangerous for the plant to spray neem oil. Therefore, when caring for tansy, especially during the process of killing pests, neem oil should not be used.

Cow Peas

Last on the list of “what plants not to use neem oil on” is Cow Peas. Like some other legumes, the stems and leaves of cowpea are very thin and soft, so they burn easily when exposed to neem oil. When the stems and leaves are burned, the plant cannot grow and even dies.

And that is the list of “what plants not to use neem oil on”

How To Mix Neem Oil For Plants?

First, prepare neem oil for fertilizing plants. You just need things like this:

• Neem oil concentrate.
• Spray bottle.
• Organic soap or potassium hydroxide.

You can buy neem oil-based insecticides in the form of ready-made sprays. However, you should prepare it yourself using an organic concentrate intended for plants to get an effect. Be sure to check the label carefully to make sure there aren’t any special instructions for mixing.

And here is the recipe for mixing neem oil for plants:

• 1/2 teaspoon pure organic neem oil concentrate
• 1 teaspoon mild liquid soap
• 1 liter of warm water

  

How To Apply Neem Oil To Plants ?

Here are a few key ways to use neem oil for plants.

• Dormant spray: applied when plants are dormant to destroy pests and harmful eggs. For best results, use neem heads on dry and windless days. Wait until the temperature is at least 40 degrees Fahrenheit and suspend spraying if freezing occurs.
• Foliar spray: use neem oil directly on the leaves at any time of the year to control pests well.
• Soil drench: use neem oil diluted with water and pour into soil or potted plants. At this point the solution will be absorbed through the roots systematically. Insects will ingest this solution and be destroyed.

  

That’s what plants not to use neem oil on. These plants are very sensitive to neem oil, especially in the stems and leaves. Therefore, if you want to kill pests, you should find another solution instead of using neem oil.

 

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