Updated: July 17, 2023

Crusader bugs, also known as Mecaspidiella sp., are a common pest that can wreak havoc on sword plants. These bugs feed on the sap of the plant, causing yellowing, wilting, and stunted growth. If left untreated, they can severely damage or even kill the plant. In this article, we will explore effective methods to get rid of crusader bugs and protect your sword plant.

Identify the Problem

The first step in dealing with any pest infestation is to correctly identify the problem. Crusader bugs are small, oval-shaped insects that are usually black or dark brown in color. They have long antennae and are typically found on the undersides of leaves, where they suck the plant’s sap. Look for signs of yellowing or wilting leaves, as well as distorted growth patterns. You may also notice sticky honeydew residue on the leaves and surrounding areas.

Natural Remedies

  1. Neem oil: Neem oil is a popular organic solution for controlling a wide range of pests, including crusader bugs. It works by disrupting their feeding and reproductive cycles. Mix 2 tablespoons of neem oil with 1 gallon of water and spray it on the affected parts of the sword plant. Repeat this process every 7-10 days until the infestation is under control.

  2. Insecticidal soap: Insecticidal soap is another effective natural remedy for crusader bugs. It works by suffocating the pests when sprayed directly on them. Dilute 2-3 tablespoons of insecticidal soap in 1 gallon of water and spray it on the affected areas. Make sure to cover both sides of the leaves thoroughly. Repeat this treatment every 5-7 days until the bugs are eliminated.

  3. Beneficial insects: Introducing beneficial insects, such as ladybugs or lacewings, can help control the population of crusader bugs. These predatory insects feed on pests, including crusader bugs, and can provide long-term pest control. You can purchase these beneficial insects online or from local garden centers.

Chemical Control

If natural remedies fail to control the crusader bug infestation, you may need to resort to chemical control methods. However, it is important to use chemical pesticides as a last resort and with caution, as they can harm beneficial insects and have negative effects on the environment. Always read and follow the instructions on the pesticide label.

  1. Pyrethrin-based insecticides: Pyrethrin-based insecticides are derived from chrysanthemum flowers and are considered relatively safe for humans and pets. They work by targeting the nervous system of insects, including crusader bugs. Follow the instructions on the product label for application rates and frequency.

  2. Systemic insecticides: Systemic insecticides are absorbed by the plant and are effective against pests that feed on its sap. These insecticides can be applied as a soil drench or as a foliar spray. However, it is important to note that systemic insecticides may take longer to eliminate the infestation compared to contact insecticides.

  3. Contact insecticides: Contact insecticides, such as malathion or permethrin, kill crusader bugs upon contact. They are fast-acting but may require multiple applications to completely eradicate the infestation. It is important to carefully follow the instructions on the product label and avoid using these chemicals during the flowering stage of the plant.

Prevention Tips

Prevention is always better than cure when it comes to pest control. Here are some tips to prevent crusader bug infestations on your sword plant:

  1. Regularly inspect your plants: Regularly check your sword plants for any signs of pests or damage. Early detection can help prevent the infestation from spreading and causing significant damage.

  2. Maintain a clean garden: Remove any dead plant material, fallen leaves, or debris from your garden, as they can harbor pests and diseases. Keep the area around your sword plants clean and tidy.

  3. Encourage beneficial insects: Plant flowers and herbs that attract beneficial insects, such as ladybugs, lacewings, and parasitic wasps. These insects will help control the population of crusader bugs and other pests naturally.

  4. Avoid over-fertilizing: Over-fertilizing your plants can attract pests, including crusader bugs. Follow the recommended fertilization schedule for your sword plants and avoid excessive use of nitrogen-rich fertilizers.

Conclusion

Dealing with crusader bugs on your sword plant can be a frustrating experience. However, with proper identification and prompt action, you can effectively get rid of these pests and protect your plant’s health. Start with natural remedies and only resort to chemical control if necessary. Remember to take preventive measures to minimize the risk of future infestations. With diligence and care, you can successfully eliminate crusader bugs and ensure the well-being of your sword plant.