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How to Get Rid of Nematodes on Dolphin Plant

Updated: July 8, 2022

Dolphin plant, also known as string of dolphins, is a popular succulent plant that is native to South Africa. It is a beautiful and unique plant that is often grown indoors or outdoors in containers. However, like many plants, it can be susceptible to nematodes – microscopic worms that feed on plant roots and can cause significant damage. In this article, we will discuss how to get rid of nematodes on dolphin plants.

Identifying Nematode Damage

Before we dive into the methods of getting rid of nematodes, it is important to identify the damage they cause. Nematodes are small and difficult to see with the naked eye, but their damage is visible. Look for stunted growth, yellowing leaves, and wilting foliage. The plant may also have a reduced root system or show signs of root rot.

Natural Ways to Control Nematodes

There are several natural methods that can be used to control nematodes on dolphin plants. These methods are safe and effective and do not harm the environment.

Crop Rotation

Crop rotation is a practice where different crops are grown in the same area in different seasons. This practice can help reduce nematode populations in the soil. If you have several containers of dolphin plants, rotate them every season.

Beneficial Nematodes

Beneficial nematodes are a type of nematode that feeds on other nematodes. They are not harmful to plants or humans and can be purchased from garden supply stores. Simply apply the beneficial nematodes to the soil around your dolphin plant and let them do their job.

Compost Tea

Compost tea is a natural fertilizer that contains beneficial microorganisms, including nematode predators. To make compost tea at home, steep compost in water for 24-48 hours and then strain the liquid. Apply the compost tea to the soil around your dolphin plant.

Chemical Methods to Control Nematodes

If natural methods do not work or if the nematode infestation is severe, chemical methods may be necessary. However, these methods should be used with caution as they can harm beneficial organisms and the environment.

Soil Fumigation

Soil fumigation is a method where chemicals are used to kill nematodes in the soil. This method is effective but can be expensive and harmful to the environment. It should only be used as a last resort.


Nematicides are chemicals that are specifically designed to kill nematodes. They can be effective but should only be used as directed and with caution. Follow all safety instructions when using nematicides.

Prevention of Nematode Infestations

Prevention is the best way to avoid nematode infestations on dolphin plants. Here are some tips to prevent nematodes from infecting your plants:

  • Use clean potting soil when planting your dolphin plant.
  • Avoid overwatering your plant, as this can lead to root rot and make it more susceptible to nematodes.
  • Do not plant different crops in the same area where you have grown dolphin plants recently.
  • Keep your plants healthy with proper watering, fertilization, and pruning.


Getting rid of nematodes on dolphin plants can be challenging, but there are several natural and chemical methods available. Prevention is the best way to avoid an infestation, so make sure to keep your plants healthy and avoid overwatering. If you do have a nematode infestation, try natural methods first before resorting to chemicals. Always follow safety instructions when using chemicals.


Can nematodes harm humans?

No, nematodes are harmless to humans.

Can I use vinegar to control nematodes?

No, vinegar is not effective in controlling nematodes.

Can I use nematode-resistant plants to prevent infestations?

Yes, planting nematode-resistant plants can help prevent infestations. However, dolphin plants are not known to have nematode-resistant varieties.