What Will Kill Aphids on Tomato Plants

Aphids, also known as plant lice or greenflies, can quickly infest tomato plants and damage the leaves, stems, and fruit. These tiny insects suck the sap from the plants, which weakens them and makes them more susceptible to diseases. If you are struggling with an aphid infestation on your tomato plants, there are several methods you can use to get rid of these pests.

1. Soapy water

A simple and effective way to kill aphids on tomato plants is to make a solution of soapy water. Mix 1 teaspoon of liquid dish soap with 1 quart of water and pour the solution into a spray bottle. Spray the soapy water directly onto the tomato plants, making sure to cover both the tops and bottoms of the leaves. The soap will suffocate the aphids, causing them to die off.

2. Neem oil

Neem oil is a natural insecticide that can be used to kill aphids on tomato plants. It works by disrupting the insect's hormonal system, making it difficult for them to feed and reproduce. Mix 1 tablespoon of neem oil with 1 quart of water and spray the solution onto the tomato plants. Repeat the treatment every few days until the aphids are no longer present.

3. Insecticidal soap

Insecticidal soap is a specially formulated soap that is designed to kill insects, including aphids. It works by breaking down the insect's outer coating, causing them to dehydrate and die. Mix the insecticidal soap according to the instructions on the label and spray it directly onto the tomato plants. Be sure to cover both the tops and bottoms of the leaves, as well as the stems and fruit.

4. Companion planting

Companion planting involves planting certain plants alongside each other to deter pests and promote growth. Marigolds, for example, are known to repel aphids and can be planted alongside tomato plants. Other plants that are effective against aphids include chives, garlic, and mint. By planting these companion plants alongside your tomato plants, you can help to keep aphids away.

5. Diatomaceous earth

Diatomaceous earth is a natural powder that is made from fossilized algae. It works by puncturing the exoskeleton of insects, causing them to dehydrate and die. Sprinkle diatomaceous earth onto the tomato plants, making sure to cover both the tops and bottoms of the leaves. Be sure to reapply the powder after rainfall or irrigation.

Conclusion

Aphids can be a frustrating pest to deal with, but there are several methods you can use to get rid of them. From soapy water to neem oil to companion planting, there are plenty of natural and effective ways to kill aphids on tomato plants. By taking action early and treating the infestation quickly, you can help to protect your tomato plants from further damage and ensure a healthy harvest.