Updated: October 8, 2022

Cleome plant, also known as spider flower, is a popular ornamental plant that adds color and charm to any garden. However, it is susceptible to nematode infestation. Nematodes are microscopic worm-like organisms that invade the roots of plants, causing stunted growth and yellowing of leaves. In this article, we’ll discuss how to get rid of nematodes on cleome plants.

Identify the Problem

Before you can start treating nematodes on your cleome plants, you need to be sure that they are the cause of the problem. The symptoms of nematode infestation include stunted growth, yellowing of leaves, and reduced flower production. However, these symptoms can also be caused by other factors such as overwatering or nutrient deficiency. To confirm if nematodes are the culprit, take a soil sample and send it for analysis.

Cultural Control

Cultural control involves practices that prevent nematode infestation or reduce their population in the soil. One of the most effective cultural controls is crop rotation. Avoid planting cleome plants in the same spot for more than two years in a row. This prevents nematodes from building up in the soil. Instead, plant nematode-resistant crops such as marigolds or sunflowers in between cleomes.

Another cultural control technique is to improve soil health by adding organic matter such as compost or manure. This improves soil structure and enhances beneficial microorganisms that compete with nematodes for resources.

Chemical Control

If your cleome plants are severely infested with nematodes, chemical control may be necessary. There are several nematicides available in the market that can kill nematodes in the soil. However, these chemicals are toxic and should be used with caution. Always follow the manufacturer’s instructions when applying nematicides.

Biological Control

Biological control involves using natural enemies to control nematodes. One effective biological control method is to introduce nematode-resistant plants such as marigolds or sunflowers in between cleome plants. These plants release chemicals that repel nematodes or attract beneficial organisms that feed on nematodes.

Another biological control method is to introduce beneficial nematodes into the soil. These nematodes are natural predators of plant-parasitic nematodes and can reduce their population in the soil. Beneficial nematodes are available in the market and can be applied to the soil by mixing them with water.


Can I use neem oil to control nematodes on my cleome plants?

Neem oil has been shown to have some nematicidal properties, but its effectiveness against nematodes on cleome plants has not been studied extensively. It is best to use neem oil as a preventive measure rather than a treatment for severe infestations.

Can I save my cleome plants if they are severely infested with nematodes?

It depends on the severity of the infestation. If the plants are severely stunted and yellowing, it may be difficult to save them. However, if you catch the infestation early, you may be able to save the plants by implementing cultural or chemical controls.

How often should I rotate my cleome plants?

It is recommended to rotate your cleome plants every two years to prevent nematode buildup in the soil.

In conclusion, nematode infestation can be a frustrating problem for cleome plant growers. However, with proper identification and management techniques, you can get rid of nematodes and enjoy healthy and vibrant cleome plants in your garden. Remember to always follow safety precautions when using chemical controls and consider using natural methods such as crop rotation and beneficial nematodes.