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19 Methods of Making Organic Insecticide for Garden at Home

By Howard Parker Last Updated September 23, 2020Leave a Comment

19 Methods of Making Organic Insecticide for Garden at Home

As an Amazon Associate I earn from qualifying purchases.

The use of chemical insecticides often expensive and harmful to the environment, it is possible to treat plants organically without any chemical insecticides.

You might be wondering:

There are many effective insecticidal products present in nature. For example Lavender, citronella, tobacco dust, and many more which have repellent properties. Organic products such as coffee grounds, the nettle manure or comfrey manure both used as fertilizer and insecticide depending on the dosage used.

In this article, I will share with you some tips and 19 organic homemade insecticide spray recipes for your plants based on 100% natural household ingredients.

What's On the Page

  • 1 How to make Natural Insect Repellent for Your Plants?
    • 1.1 1.Baking Soda, Soap, and Oil
    • 1.2 2.Vinegar and Oil mixer as Insecticide
    • 1.3 3.Recycle Cigarette Butts As Anti-Aphid
    • 1.4 4.Lemongrass As Insect Repellent
    • 1.5 5.Nettle Manure as an Insecticide
    • 1.6 6.Diatomaceous Earth As a Natural Insecticide
    • 1.7 7.Pyrethrum Insecticide
  • 2 Some Natural Insecticides: Already Available In Your Home
    • 2.1 1.Oil Spray Insecticide
    • 2.2 2.Neem Oil Spray for Plant
    • 2.3 3.Garlic Spray For pest
    • 2.4 4.Chili Spray
    • 2.5 5.All-In-One Vaporizer
    • 2.6 6.Tomato Leaves
    • 2.7  7.Coffee Grounds
    • 2.8 8.Grapefruit Seeds Extract
    • 2.9 9.Rubbing Alcohol
    • 2.10 10.Borax
    • 2.11 11.Rhubarb Leaves
    • 2.12 12.Tobacco as Insecticide
  • 3 Conclusion
    • 3.1 Read More:

Pieces of Advice:

  1. Store products in a cool and dark place. Use an opaque spray instead of a clear spray for better preservation.
  2. Do not apply a product to the body without testing on a small area of the skin.
  3. Be careful that you do not get in touch with essential oils on mucous membranes, eyes, or around the eyes.

How to make Natural Insect Repellent for Your Plants?

1.Baking Soda, Soap, and Oil

Baking-Soda-Soap-and-Oil-insecticide

This homemade insecticide can be used in the garden to control garden pests such as aphids, mites (red spider mites) and also act as a good natural insect repellent against flies, mosquitoes, or the ants.

Items Required:

  • Two tablespoons of black soap (Our pick: African Black Soap)
  • One teaspoon of baking soda (Our pick: Arm & Hammer Baking Soda)
  • Ten drops of lemongrass essential oil (Our pick: Artizen Lemon Essential Oil)
  • Ten drops of essential oil of cloves (Our pick: Artizen Clove Essential Oil)

Procedure:

  1. Pour these different ingredients into a manual vaporizer.
  2. Fill the rest of the tank with water.
  3. Mix vigorously before use.

It is recommended to apply earlier in the morning or evening but does not apply in direct sunlight.

2.Vinegar and Oil mixer as Insecticide

 Vinegar-and-Oil-insecticide

As you already know vinegar is a multi-purpose product. It is also used as a natural bug killer. You can use it to remove aphids, water bugs, palmetto bugs, spiders, fruit flies, and many other garden pests.

Items Required:

  1. Vinegar (Our pick: 30% White Vinegar)
  2. Bourbon geranium essential oil (Our pick: Plant Guru Bourbon geranium oil)
  3. Tea tree essential oil (Our pick: Ola Prima Tea Tree Essential Oil)
  4. Eucalyptus essential oil (Our pick: Ola Prima Eucalyptus Essential Oil)
  5. Lemon essential oil (Our pick: Artizen Lemon Essential Oil)
  6. The essential oil of lavender (Our pick: Ola Prima Lavender Essential Oil)
  7. Sprouts of lavender
  8. Verbena leaves

Procedure:

  1. Boil lavender and verbena in a pan of hot water for about ten minutes.
  2. Let infuse it into the pan and put a lid until the mixture cools.
  3. Filter the juice with a strainer.
  4. Pour 2-3 tablespoon of white vinegar into the juice.
  5. Add five or ten drops of each oil.
  6. Transfer the solution into the spray bottle.

3.Recycle Cigarette Butts As Anti-Aphid

cigarettebutts

Cigarette butts are used as preventive treatment. It applies directly to the foliage. Lets’s have a look at how to use it as an insecticide.

Procedure :

  1. Fill half a plastic bottle of cigarette butts.
  2. Add water to the neck and close the bottle for 24 hours.
  3. Filter the mixture to harvest only the juice and apply it on your plant.

Tips: Make a filter funnel by cutting off the top of a plastic bottle and covering it with a woven compress that will hold the butts.

Remarks

  1. To obtain a more concentrated product, let the mixture macerate for a week. The juice obtained is more powerful. It can be diluted with water and used several times.
  2. It is also possible to harvest ashes from ashtrays, fireplaces or barbecues to mix with boiling water. Once the mixture has cooled, it is an excellent insecticide against aphids.

4.Lemongrass As Insect Repellent

lemongrass stalk

Lemongrass is also a very strong insect repellent. To make this repellent you need to get about 50 gm of fresh lemongrass sprouts. The solution is applied directly to the foliage using a cotton pad. It is very effective to repel mosquitoes.

Procedure:

  1. Slice the lemongrass stalks and place the pieces in a pan.
  2. Cover with water and boil for about 10 minutes.
  3. Let the mixture cool down and filter the juice with a strainer.
  4. Spray the solution on insect affected areas of the plant.

Tips: Keep some lemongrass stalks or spray some sap directly on the door and window frames to keep mosquitoes out of your home.

5.Nettle Manure as an Insecticide

nettle manure as insecticide

Nettle manure is another natural insecticide that also serves as a fertilizer. You can simply put the manure on the soil or can also spray on the foliage. 

How to make nettle manure?

  1. 1.5 kg of chopped nettle leaves (choose young shoots).
  2. Add 10 liters of water.
  3. Let them macerate(at least 24 hours).
  4. Filter the maceration.

Add 1 liter of manure into 10 liters of water and spray on your plant.

6.Diatomaceous Earth As a Natural Insecticide

Diatomaceous-Earth

Best D.E 

Diatomaceous earth(our pick: Safer 51703 Diatomaceous Earth) can also be used as a powerful natural insecticide. It is composed of more than 80% mineral silica. It is efficient, ecological, economical, and has no side effects.

The diatomaceous earth is applied to many pests and insects (ants, beetles, bedbugs, worms, fleas, mites, cockroaches, ticks). You can apply it directly on the ground. It dehydrates insects and kills.

7.Pyrethrum Insecticide

Pyrethrum Insecticide

Pyrethrum is the best option for aphids and mites, whiteflies, thrips, and other insects. Pyrethrum is an ornamental flowering plant and it’s also used as a natural insecticide. Its leaves contain pyrethrins substance that causes paralysis of insects and mites quickly and effectively.

  1. Do not hesitate to repeat the treatment because the pyrethrum deteriorates quickly in the light and dilutes with the rain.
  2. But do not overdo because it is also effective against all useful insects (ladybugs, bees).

Our recommended best Pyrethrum Insecticide– Bonide (BND857) – Pyrethrin Garden Insect Spray

Some Natural Insecticides: Already Available In Your Home

Now we are going to introduce some organic product which is already available in your kitchen but you don’t know about the properties of the destruction of insects.

Yes, you read that right. Let’s get to the point-

1.Oil Spray Insecticide

oil spray on plant

Mix a preparation cup of vegetable oil with a tablespoon of soap. 

Add 2 teaspoons of your preparation in 250 ml of water and spray. 

The product will coat the bodies of insects and suffocate them.

2.Neem Oil Spray for Plant

neem oil spray

Neem oil is a vegetable oil obtained from the seeds of the neem tree. It is a powerful natural insecticide that disrupts all phases of the insect life cycle (eggs, larvae, adults). It produces hormones that prevent insects from feeding. This oil is biodegradable and is not toxic to your pets, birds, and fish. It also acts as a natural fungicide. 

Neem oil spray recipe-

Mix 2 teaspoons of oil and 1 teaspoon of liquid soap with 250 ml of water. 

Then apply on infected leaves. This mixture also has a preventive action.

Recommended ready-made neem oil insecticide– Organic Neem Bliss 100% Pure Neem Oil

3.Garlic Spray For pest

Garlic oil spray on plant

Garlic is known for its scent and intense aroma. Some adore it, others avoid it. The same thing happens with insects. That’s why it acts as a repellent. 

How to make garlic spray?

Take 2 bulbs of garlic, puree with a blender, and mix 250 ml of water.

Let stand overnight. Pour into a container by adding half a cup of vegetable oil, a teaspoon of liquid soap and water.

Pour a cup of this preparation and water into a spray bottle, then apply to your infested plants.

Recommended garlic spray for plants- Garlic Barrier 2002 AG+ Liquid Spray

4.Chili Spray

chilli spray

It has the same as the garlic spray preparation. You can use fresh chili pepper or powder.

To make chili spray for plant-

Mix one tablespoon chili powder or mash half a fresh chili with 250 ml water and several drops of liquid soap. 

Now, you can spray this mixture to your plants directly.

Precaution: Be sure to wear gloves when handling and spraying, be careful to keep the spray away from the eyes, nose, and mouth.

5.All-In-One Vaporizer

Ingredients:

  • 1 bulb of garlic mashed,
  • 1 small onion
  • 1 teaspoon of cayenne pepper powder. 

Mix and let stand for one hour. Filter the mixture, add a tablespoon of liquid soap, then mix properly. 

Spray on both sides of the leaves. You can keep this preparation for one week in your refrigerator.

6.Tomato Leaves

tomato leaves

You know what? tomato leaves contain alkaloids. These are very much effective in treating aphids and other insects. 

Collect 2 cups of fresh leaves and immerse them in 250 ml of water. Let stand overnight. Filter and apply with a spray on the leaves.

Remember that plants need insects and you should never try to kill them all. This is why the gardener interested in these natural methods. They will keep the ecosystem of your garden intact.

 7.Coffee Grounds

ground-coffee

You might wonder;

The coffee grounds have many uses. It is used as mulch, potting soil, agood fertilizer, and insecticide. Basically coffee grounds are an excellent repellent for ants, slugs, aphids, and snails. In the garden, if you spread well-dried coffee grounds at the feet of the plants, the aphids will be kept apart and also work as fertilizer for the plant.

It is also possible to spray the plants with coffee grounds diluted in water. You can also mix lemon juice with the diluted solution. 

8.Grapefruit Seeds Extract

Grapefruit Seeds as insecticide

The grapefruit seed extract is often used against mold, mildew, slugs, and aphids. It is also used in farms, it is used to treat animals suffering from fungal infections. They have anti-microbial properties that are why it is widely used for the fight against all kinds of pests. It is 100% natural. it does not destroy beneficial bacteria and has no side effects.

Here is the recommended GSE- Nutribiotic Gse Liquid Concentrate

9.Rubbing Alcohol

Rubbing Alcohol spray for plant

Rubbing alcohol is effective at getting rid of many invaders including aphids. To do this:

  1. Mix 60 milliliters of rubbing alcohol with 1 liter of water.
  2. Spray the insecticide directly on the affected plants.

10.Borax

This homemade insecticide recipe with borax will be helpful in getting rid of ants in the garden. However, a borax insecticide should be avoided if you have young children or pets.

To make this anti ants recipe:

  1. Make a mixture of equal parts of borax and icing sugar.
  2. Sprinkle this mixture where the ants are present

Ants will transport this deadly insecticide to their nest for food and thus poison the entire colony.

11.Rhubarb Leaves

rhubarb leaves as insecticide

Do you grow one or more rhubarb plants? Rhubarb leaves are poisonous, use them as a natural and environmentally friendly insecticide! Simply

  1. Add 500 grams of rhubarb leaves in 3 liters of water.
  2. Boil for 30 minutes.
  3. Filter and pour everything into a vaporizer.
  4. Spray the insecticide directly on unwanted insects.

12.Tobacco as Insecticide

tobacco as insecticide

Use fresh or dried tobacco leaves to make an insecticide decoction.

Steps of making tobacco insecticide-

  1. Mix 500 grams of tobacco leaves in 3 liters of water.
  2. Boil for 30 minutes.
  3. Filter and spray insect pests directly.

Conclusion

Fighting with insects is the most important task to the gardeners. There are lots of insecticide available in the market. All may good at their job but all are not good for your health and plants. So, it is wise to make a effective insecticide at home for the garden.

And Here I have tried to discuss all the methods of natural insecticide. Just follow the step by step guide to make your insecticide at home and keep your garden insect-free.Happy Gardening!

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About Howard Parker

Howard Parker has a Master of Science in Plant Science. He is knowledgeable person and involved in the Gardening, Landscape management and any kinds of green initiatives.Read more about him

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