Updated: July 9, 2023

Introduction

Nematodes are microscopic roundworms that can cause significant damage to plants, including the beloved Ruby Necklace plant (Othonna capensis). These pests feed on the roots of the plant, leading to stunted growth, yellowing leaves, and potential plant death if left untreated. In this article, we will explore effective methods on how to get rid of nematodes on your Ruby Necklace plant and restore its health.

Identifying Nematode Infestation

Before you can effectively treat nematodes on your Ruby Necklace plant, it is important to confirm their presence. Look out for the following signs:

  1. Stunted growth: If your Ruby Necklace plant is not growing as expected or appears smaller than usual, nematodes could be the culprit.
  2. Yellowing leaves: Nematode-infested plants often exhibit yellowing leaves that may eventually wither and fall off.
  3. Root damage: Gently remove the plant from its pot and examine the roots. Nematode-infested roots may appear swollen, discolored, or have knots or galls.

If you notice any combination of these symptoms, it is likely that your Ruby Necklace plant is suffering from a nematode infestation.

Prevention is Key

As with many plant-related issues, prevention is always better than cure. Here are some measures you can take to prevent nematode infestation in the first place:

  1. Quarantine new plants: Before introducing a new plant to your collection, isolate it for a few weeks to monitor for any signs of pests or diseases, including nematodes.
  2. Sterilize tools and containers: Clean and sterilize your gardening tools and containers regularly to prevent the spread of nematodes between plants.
  3. Crop rotation: If you are growing multiple plants in the same area, practice crop rotation. Nematodes tend to prefer specific plants, so rotating your crops can help disrupt their life cycle.
  4. Soil solarization: This technique involves covering the soil with a clear plastic sheet during hot summer months to heat it up and kill nematodes and other pests.

Natural Remedies for Nematodes

If you have confirmed a nematode infestation on your Ruby Necklace plant, there are several natural remedies you can try to eliminate these pests:

1. Neem oil

Neem oil is derived from the neem tree and has insecticidal properties. Dilute neem oil according to the instructions on the packaging and spray it on the foliage and soil around the base of your Ruby Necklace plant. Repeat this process every few weeks until the infestation is under control.

2. Marigold companion planting

Marigolds are known for their ability to repel nematodes. Planting marigolds near your Ruby Necklace plant can help deter these pests. The marigold’s strong scent and root excretions are thought to be responsible for this repellent effect.

3. Compost tea

Compost tea is a natural fertilizer that contains beneficial microorganisms that can help suppress nematode populations. To make compost tea, steep compost in water for a few days, strain it, and use the resulting liquid to water your Ruby Necklace plant.

4. Organic matter amendment

Nematodes thrive in sandy soils, so amending your soil with organic matter can help improve its texture and reduce nematode populations. Incorporating compost or well-rotted manure into the top few inches of soil will not only provide nutrients but also create a more favorable environment for beneficial soil organisms that prey on nematodes.

Chemical Control Options

If natural remedies do not provide satisfactory results or if the infestation is severe, you may need to resort to chemical control options. It is important to note that chemical pesticides should always be used as a last resort and with caution, as they can harm beneficial organisms and have negative environmental impacts. Here are a few chemical treatments to consider:

1. Nematicides

Nematicides are specifically formulated to target nematodes. These chemical pesticides can be effective in eradicating nematode populations but should be used sparingly and strictly according to the instructions provided by the manufacturer.

2. Soil fumigation

Soil fumigation involves using chemicals to sterilize the soil and kill nematodes. This method is typically reserved for severe infestations or large-scale agricultural operations and should be carried out by professionals due to the potential health hazards associated with the chemicals used.

Conclusion

Nematodes can pose a serious threat to the health and survival of your Ruby Necklace plant. By being proactive with prevention measures and employing natural remedies when necessary, you can effectively manage and eliminate nematode infestations. Remember, patience is key when dealing with pests, so be consistent and persistent in your treatment methods. With diligence and care, you can restore your Ruby Necklace plant’s vitality and enjoy its beauty for years to come.