How to Apply Insecticide to Plants? Take Care of Them Properly

Anyone who has a garden or plants at home knows that there is nothing more unpleasant than losing them to insects that feed on their leaves and other parts. Often, it is necessary to use chemicals to ward off these pests. Thinking about it, do you know how to apply insecticide to plants ?

Insects can appear on plants at different stages of growth, from germination to harvest, which can become a concern for gardeners and seedling caretakers. Therefore, it is important to obtain products that perform this function effectively and do not harm their health.

To understand how to apply insecticide to plants and answer other questions about this process, we have developed this special article. Thus, you stay on top of everything to maintain proper care for your garden and leave your plantation beautiful and healthy.

What is insecticide?

Plant insecticides are chemical or biological substances designed to control pests and insects in crops. In this way, you can prevent the emergence and accumulation of pests that can harm the development of a plant.

As previously mentioned, pests can appear at different times of plant development. In addition, different types of insects may appear at each stage, which requires gardeners to analyze which product is most recommended, taking into account plant species and pests.

There are several types of insecticides , the main ones being: pyrethroids, organophosphates, glyphosate, neem oil and tobacco. Some of them have natural compositions, while others have more potent chemicals, which are able to ward off invaders more quickly.

How to apply insecticides?

Want to know how to apply insecticide to plants ? Regardless of the type of insecticide you choose, it’s important to keep in mind that it must be applied very carefully. The item can be made available in liquid or granulated form.

Due to the presence of chemical compounds and other components, some insecticides can harm plant health in the short term. Therefore, always remember to use PPE (personal protective equipment) when handling these products, in addition to a sprayer at the time of application .

Another important factor in knowing how to properly apply insecticide to plants is to pay attention to the weather conditions. Some temperatures and other events, such as rain, storms and wind, can be harmful to the application, compromising the effectiveness of the product.

Below we separate the most common types of insecticide for garden plants and their main forms of application. However, always be aware of each manufacturer’s recommendations, as the method of application may vary based on product composition and other requirements.


Pyrethroids are considered natural insecticides that ward off various pests, such as aphids, caterpillars, ants, among others. They are available in liquid form and are usually applied directly to plants. However, if you have cats, keep them away from the product, as it is harmful to your body.


Organophosphates are used on plants that are attacked by larger pests that feed on the leaves. However, in most cases, the use of this insecticide is restricted to application by specialized professionals.


Glyphosate is one of the insecticides with the most powerful chemical components, being developed in the laboratory. It should be applied in gardens and small vegetable gardens. However, several organizations raise hypotheses about the use of this component due to the consequences it can have on health.

Neem oil

If you are looking for another natural insecticide option, neem oil may be the best option for you to use. The product must be diluted in water and applied to the leaves of the plants and their branches.


Tobacco is a natural insecticide that has tobacco properties. Many experts believe that they are effective for pest control. To apply, it must be diluted and placed in the correct amount, so that it does not harm the health of the plants.

Repellent plants

If you deal with insects in the garden, but don’t want to use insecticides to drive them away, either because you don’t want to use chemicals or for any other reason, know that there are plants that have a repellent action against insects. They are widely used and easy to find. Check out some below:

  • Citronella
  • Rosemary
  • Lavender
  • Basil
  • Rue
  • Boldo

Precautions when applying insecticides

To find out how to apply insecticide to plants, it is important to bear in mind that this varies according to the type chosen, the little plants that live in your garden and the pests that arise in everyday life. Therefore, it is important to follow the instructions for use contained on the label of each product in order to enjoy all the benefits.

Because many of them are chemical compounds, contact of products with the skin should be avoided. Therefore, use gloves when using the item. If you don’t feel safe applying insect poison , hire an expert to perform the service.

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