Do Aphids Like Nasturtiums?

Do Aphids Like Nasturtiums?

Yes, aphids do like nasturtiums. Nasturtiums are known to attract aphids due to their succulent leaves and vibrant flowers. In this article, we will explore why aphids are attracted to nasturtiums, the impact of aphids on these plants, and effective ways to control and prevent aphid infestations on your nasturtiums.

Why are Aphids Attracted to Nasturtiums?

Aphids are attracted to nasturtiums for several reasons:

  1. Succulent Leaves: Nasturtiums have tender, juicy leaves that provide a rich source of nutrients for aphids.
  2. Flower Nectar: Nasturtiums produce abundant nectar, which acts as a natural aphid attractant.
  3. Easy Access: The structure of nasturtium plants, with their broad leaves and open flowers, makes it easy for aphids to crawl and feed on various parts of the plant.

The Impact of Aphids on Nasturtiums

Aphids can have both direct and indirect impacts on nasturtium plants:

Direct Impact

Aphids feed on the sap of nasturtium plants, causing damage to the leaves, stems, and flowers. This feeding activity weakens the plant and can lead to stunted growth, wilting, and even death in severe cases. Additionally, aphids excrete a sticky substance called honeydew, which can attract other pests like ants and promote the growth of sooty mold on the plant’s surface.

Indirect Impact

Aphids are also known to transmit viral diseases to plants. These viruses can further weaken the nasturtiums and hinder their overall health and productivity. It is crucial to control aphid populations to prevent the spread of such diseases.

Controlling and Preventing Aphid Infestations on Nasturtiums

Here are some effective methods to control and prevent aphid infestations on your nasturtium plants:

1. Natural Predators

Encourage the presence of natural aphid predators in your garden, such as ladybugs, lacewings, and hoverflies. These beneficial insects feed on aphids and can help keep their populations in check.

2. Companion Planting

Planting companion plants that repel aphids or attract their predators can be beneficial. Some suitable companion plants for nasturtiums include marigolds, chives, and garlic.

3. Water Spray

A strong blast of water from a hose can dislodge aphids from the plant. Repeat this process regularly to control their numbers.

4. Neem Oil

Apply a diluted solution of neem oil to the affected parts of the nasturtium plant. Neem oil acts as a natural insecticide and can help deter aphids.

5. Organic Insecticidal Soap

Use an organic insecticidal soap specifically formulated for aphid control. Follow the instructions on the product label for safe and effective application.

6. Regular Inspection

Regularly inspect your nasturtium plants for early signs of aphid infestation. Prompt action can prevent the infestation from spreading and causing significant damage.


In conclusion, aphids are indeed attracted to nasturtiums due to their succulent leaves and flower nectar. However, with proper control measures and preventive strategies, you can effectively manage aphid infestations on your nasturtium plants. By implementing natural predators, companion planting, water sprays, neem oil, organic insecticidal soap, and regular inspections, you can enjoy healthy and thriving nasturtiums in your garden.

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