Jardinagem is a rewarding hobby, but dealing with pesky insects can sometimes be a challenge. Fortunately, there are natural alternatives to chemical insecticides that can effectively repel insects and keep your garden thriving. In this article, we will explore the benefits of natural insect repellents and provide you with a variety of options to protect your garden from unwanted pests.

Benefits of Natural Insect Repellents for the Garden

Using natural insect repellents offers several advantages over chemical-based products. Firstly, they are safer for the environment and do not pose risks to human health or beneficial insects. Secondly, natural repellents are often more cost-effective, as many ingredients can be sourced from your kitchen or garden. Lastly, these repellents can be just as effective as their chemical counterparts in deterring insects, ensuring your plants stay healthy and pest-free.

Essential Oils as Natural Insect Repellents

Essential oils are highly concentrated plant extracts that possess natural insect-repellent properties. Many essential oils have been proven effective in repelling a wide range of garden pests. To make your own essential oil spray, start by choosing the right oils. Some popular options include citronella, lemongrass, peppermint, eucalyptus, and lavender. These oils can be blended together or used individually.

To create an essential oil spray, mix a few drops of your chosen oils with water and a small amount of liquid soap. Transfer the mixture into a spray bottle and shake well before use. Remember to test the spray on a small area of your plants before applying it to the entire garden to ensure there are no adverse effects.

Plants with Natural Insect-Repelling Properties

Certain plants naturally repel insects due to their strong scents or chemical properties. By strategically incorporating these plants into your garden, you can create a natural barrier against pests. Here are some plants known for their insect-repellent qualities:


Marigolds emit a strong scent that repels aphids, mosquitoes, and other garden pests. Planting marigolds alongside vegetables and flowers can help protect them from unwanted visitors.


Lavender not only adds beauty and fragrance to your garden but also repels moths, fleas, and flies. Consider planting lavender near outdoor seating areas to keep pesky insects at bay.

Citronella Grass

Citronella grass is renowned for its ability to repel mosquitoes. Planting it in your garden or using its essential oil can create a natural shield against these bothersome pests.


Basil is a versatile herb that not only adds flavor to your meals but also has natural insect-repelling properties. Planting basil near doors and windows can help keep mosquitoes and flies away. Additionally, you can crush basil leaves and rub them on your skin as a natural insect repellent.


Mint is another herb that insects tend to avoid. The strong aroma of mint plants acts as a natural deterrent for pests like ants, mosquitoes, and flies. Planting mint around your garden or using mint leaves as a repellent can help protect your plants and create a more pleasant outdoor environment.

Using Garlic and Onions as Natural Insect Repellents

Garlic and onions are not only common kitchen ingredients but also effective natural insect repellents. Their strong smell can deter a variety of pests from invading your garden. Here are simple recipes to create garlic and onion sprays:

Garlic Spray Recipe

  1. Finely chop several cloves of garlic.
  2. Place the chopped garlic in a container and add a quart of water.
  3. Let the mixture steep overnight.
  4. Strain the mixture into a spray bottle, removing any solid particles.
  5. Add a few drops of liquid soap to the garlic-infused water.
  6. Shake well and spray the mixture on the plants, paying attention to the undersides of leaves and other vulnerable areas.

Onion Spray Recipe

  1. Finely chop a medium-sized onion.
  2. Place the chopped onion in a container and add a quart of water.
  3. Allow the mixture to sit for a few hours or overnight.
  4. Strain the mixture into a spray bottle.
  5. Add a few drops of liquid soap to the onion-infused water.
  6. Shake well and spray the solution on the plants, focusing on areas prone to insect infestation.

Other Natural Insect Repellents

Apart from essential oils and kitchen ingredients, there are several other natural insect repellents that you can utilize in your garden.

Neem Oil

Neem oil is derived from the neem tree and is an effective natural insecticide and repellent. It works by disrupting the feeding and breeding patterns of insects, making it an excellent choice for organic gardening. Dilute neem oil according to the instructions on the product and apply it to your plants as directed.

Diatomaceous Earth

Diatomaceous earth is a fine powder made from the fossilized remains of marine organisms called diatoms. It works by physically damaging the exoskeleton of insects, causing dehydration and death. Sprinkle diatomaceous earth around your plants or directly on pests to create a barrier and repel unwanted insects.

Organic Pest Control Methods

In addition to using specific natural insect repellents, implementing organic pest control methods can help maintain a healthy garden ecosystem.

Companion Planting

Companion planting involves strategically pairing plants to benefit each other. Some plants emit scents or substances that repel insects, while others attract beneficial insects that prey on garden pests. Research companion planting techniques and choose plant combinations that work well together.

Attracting Beneficial Insects

Encouraging beneficial insects such as ladybugs, lacewings, and hoverflies into your garden can help control pest populations naturally. Plant flowers that attract these insects, such as daisies, cosmos, and yarrow. Providing them with a habitat and a source of nectar will promote their presence and aid in pest control.

Using Physical Barriers

Creating physical barriers can prevent insects from reaching your plants. Use row covers, netting, or mesh to protect vulnerable crops from pests like caterpillars and birds. Additionally, installing fences or barriers around your garden can deter larger pests like rabbits and deer from accessing your plants. These physical barriers provide an effective means of protection without relying on chemical repellents.

Tips for Using Natural Insect Repellents

To maximize the effectiveness of natural insect repellents in your garden, consider the following tips:

  1. Regular Application: Natural repellents may require more frequent application compared to chemical alternatives. Reapply the repellents after rainfall or as needed to ensure continuous protection for your plants.
  2. Testing on a Small Area: Before applying any natural repellent to your entire garden, test it on a small area of your plants to check for any adverse reactions. This step helps ensure that the repellent does not harm or damage your plants.
  3. Safety Precautions: While natural insect repellents are generally safe for use, it’s essential to follow safety precautions. Wear gloves when handling concentrated solutions, avoid contact with eyes, and keep the repellents out of reach of children and pets.


Incorporating natural insect repellents into your garden care routine provides a safe and eco-friendly approach to pest control. From essential oils and kitchen ingredients to specific plants and organic methods, there are numerous options available to keep insects at bay. By utilizing these natural repellents and following best practices, you can create a thriving garden environment while minimizing the impact on the ecosystem.


1. Are natural insect repellents as effective as chemical-based products? Yes, natural insect repellents can be just as effective in repelling insects when used correctly. However, they may require more frequent application compared to chemical alternatives.

2. Can I use essential oils directly on my plants? It’s best to dilute essential oils with water and a small amount of liquid soap before applying them to plants. This helps ensure that the oils are not too concentrated, which could potentially harm the plants.

3. Do natural insect repellents harm beneficial insects? Natural insect repellents, when used appropriately, should not harm beneficial insects. In fact, some repellents and companion plants can attract beneficial insects that prey on garden pests, helping to maintain a balanced ecosystem.

4. How often should I apply natural insect repellents? The frequency of application depends on various factors, such as the repellent used, weather conditions, and pest pressure. It’s advisable to reapply natural repellents after rainfall or as needed to maintain their effectiveness.

5. Can I use natural insect repellents in indoor gardens? Yes, many natural repellents can be used in indoor gardens. However, ensure proper ventilation and avoid using strong-smelling repellents that may cause discomfort in enclosed spaces.


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