Updated: July 5, 2023

The Swiss cheese plant, also known as Monstera deliciosa, is a popular indoor plant known for its large, glossy leaves and unique holey appearance. However, one common problem that plant owners may encounter is the presence of worms in their Swiss cheese plants. These worms can be unsightly and can cause damage to the plant if not addressed promptly. In this article, we will discuss effective methods to get rid of worms and prevent them from infesting your Swiss cheese plant.

Identifying the Problem

Before taking any action, it is important to correctly identify the type of worms infesting your Swiss cheese plant. The most common worm-like pests found in houseplants include fungus gnats and root knot nematodes. Fungus gnats are small black flies that lay their eggs in moist soil, while root knot nematodes are microscopic roundworms that attack the roots of plants. Identifying the specific type of worm will help you choose the most appropriate treatment method.

Prevention is Key

Preventing worms from infesting your Swiss cheese plant is crucial to maintaining its health and appearance. Here are some preventive measures you can take:

  1. Proper watering: Overwatering creates a moist environment that attracts fungus gnats. Ensure proper drainage by using well-draining soil and pots with drainage holes.

  2. Good hygiene: Keep your plant clean by regularly removing dead leaves and debris. This will help eliminate potential breeding grounds for pests.

  3. Quarantine new plants: Before introducing a new plant to your collection, isolate it for a few weeks to ensure it is not carrying any pests or diseases.

  4. Inspect soil before repotting: When repotting your Swiss cheese plant, examine the roots and soil for any signs of infestation. If you notice worms or eggs, treat the plant before repotting.

Natural Remedies for Worms

If you discover worms in your Swiss cheese plant, there are several natural remedies you can try before resorting to chemical treatments. These methods are safe for both the plant and the environment:

  1. Sticky traps: For fungus gnats, sticky traps can be highly effective. These traps consist of bright yellow or blue cards coated with a sticky substance that attracts and immobilizes the adult gnats. Place the traps near the affected plant to catch the flying insects.

  2. Diatomaceous earth: Diatomaceous earth is a natural powder made from fossilized diatoms. It is safe for humans and pets but lethal to many pests, including worms. Sprinkle a thin layer of diatomaceous earth on the soil surface to kill larvae and discourage further infestation.

  3. Neem oil: Neem oil is derived from the neem tree and has insecticidal properties. Dilute neem oil according to the instructions on the bottle and spray it on the affected plant, focusing on the undersides of leaves where pests tend to hide. Neem oil disrupts the pests’ reproductive cycle and acts as a natural pesticide.

  4. Beneficial nematodes: If root knot nematodes are causing the infestation, beneficial nematodes can help control their population. These microscopic worms attack and kill harmful nematodes without harming plants or beneficial organisms. Follow the instructions on the packaging to apply them to the soil.

Chemical Treatments

If natural remedies do not provide satisfactory results, you may need to resort to chemical treatments as a last resort. However, it is important to use these products judiciously and follow the instructions carefully to avoid harming your Swiss cheese plant or yourself:

  1. Insecticidal soap: Insecticidal soaps are specially formulated to kill soft-bodied insects like fungus gnats. These soaps work by suffocating the pests. Dilute the soap according to the instructions and spray it on affected areas of the plant.

  2. Systemic insecticides: Systemic insecticides are absorbed by the plant and provide long-lasting protection against pests. These products are effective against root knot nematodes. Follow the instructions on the packaging and apply the systemic insecticide to the soil.

Maintaining a Healthy Plant

After successfully eliminating worms from your Swiss cheese plant, it is important to maintain its health to prevent future infestations. Here are some tips:

  1. Optimal lighting: Place your Swiss cheese plant in a location with bright, indirect light. Avoid placing it in direct sunlight as this can scorch the leaves.

  2. Proper watering: Water your plant when the top inch of soil feels dry to the touch. Avoid overwatering, as this creates a favorable environment for pests.

  3. Regular inspections: Periodically inspect your plant for any signs of pests or diseases. Catching infestations early will make them easier to treat.

  4. Healthy soil: Use high-quality, well-draining soil and fertilize your plant regularly following the manufacturer’s instructions.

By following these preventive measures and employing appropriate remedies, you can effectively get rid of worms in your Swiss cheese plant and keep it healthy and thriving. Remember that patience and consistency are key when dealing with pests, so be diligent in your efforts to maintain a pest-free plant collection.