Updated: July 14, 2023

The Purple Queen plant, also known as Tradescantia pallida, is a popular choice for many garden enthusiasts due to its vibrant purple foliage. However, like any other plant, the Purple Queen is susceptible to pest infestations. One such pest that can cause significant damage to this plant is nematodes.

Nematodes are microscopic worms that live in the soil and feed on the roots of plants. They can cause stunted growth, yellowing leaves, wilting, and even death of the plant if left untreated. If you notice any of these symptoms on your Purple Queen plant, it’s important to take immediate action to get rid of nematodes. Here are some effective methods to combat this pest:

1. Soil Solarization

Soil solarization is a method that uses sunlight to kill nematodes and other soil-borne pests. This process involves covering the affected area with clear plastic for several weeks during the hottest months of the year. The heat trapped under the plastic raises the soil temperature, effectively killing nematodes and their eggs.

To solarize the soil around your Purple Queen plant, follow these steps:

  1. Moisten the soil thoroughly.
  2. Remove any weeds or debris from the area.
  3. Cover the soil with a clear plastic sheet, making sure it is tightly sealed around the edges.
  4. Leave the plastic in place for at least 4-6 weeks during the hottest period of the year.
  5. After removing the plastic, allow the soil to cool down before planting new Purple Queen starts.

Soil solarization not only helps eliminate nematodes but also reduces weed populations and improves overall soil health.

2. Crop Rotation

Crop rotation is another effective method to control nematodes naturally. By changing the location of your Purple Queen plants each year, you disrupt the nematodes’ life cycle, making it harder for them to establish and reproduce.

To implement crop rotation, follow these guidelines:

  1. Identify areas of your garden that are nematode-free or have lower nematode populations.
  2. Avoid planting Purple Queen in the same area for at least three years.
  3. Instead, rotate with plants that are less susceptible to nematodes, such as marigolds, sunflowers, or other non-host plants.
  4. This break in the life cycle of nematodes will help reduce their population over time.

Crop rotation not only helps control nematodes but also promotes overall garden health and prevents the depletion of nutrients in the soil.

3. Biological Control

Introducing beneficial organisms into your garden can help control nematode populations naturally. Some beneficial organisms feed on nematodes or parasitize them, effectively reducing their numbers. These include predatory nematodes, fungi, and bacteria.

To use biological controls for nematode management:

  1. Purchase beneficial nematodes, such as Steinernema feltiae or Heterorhabditis bacteriophora, from a reputable supplier.
  2. Follow the instructions provided on the packaging to apply the nematodes to the soil around your Purple Queen plant.
  3. These predatory nematodes will seek out and feed on harmful plant-parasitic nematodes, ultimately reducing their population.

In addition to predatory nematodes, certain fungi and bacteria can also help control nematodes. These biological controls can be found in commercial products specifically designed for nematode management.

4. Soil Amendments

Amending the soil with organic matter can help improve its fertility and structure while indirectly reducing nematode populations. Organic matter improves soil drainage and aeration, making it less favorable for nematode survival.

To amend your soil:

  1. Add well-rotted compost or organic matter to the planting area around your Purple Queen plant.
  2. Work the organic matter into the top few inches of soil.
  3. This will not only improve the soil structure but also increase beneficial microbial activity, which can suppress nematode populations.

Regularly amending the soil with organic matter will help create a healthy environment for your Purple Queen plant while naturally reducing nematode populations.

Conclusion

Nematodes can be a challenging pest to deal with, but with the right approach, you can effectively manage and reduce their population on your Purple Queen plants. By implementing methods such as soil solarization, crop rotation, biological control, and soil amendments, you can ensure the health and vitality of your Purple Queen plant for years to come. Remember to regularly monitor your plants for any signs of nematode infestation and take prompt action to prevent further damage. With proper care and attention, your Purple Queen plant will thrive and continue to showcase its beautiful purple foliage.