Felti Nematodes (SF) - Gnat Control - Fungus Gnat Control

Steinernema feltiae nematodes are microscopic worms that actively hunt fungus gnat larvae in the substrate.

Once they come into contact with a larva, they penetrate it and release a symbiotic bacterium that kills it within 24 to 72 hours. The nematodes then multiply inside the dead larva before leaving to search for new prey.

Apply them as soon as the first adult midges appear, because it is the invisible larvae in the soil that cause the real damage to the roots.

Note: nematodes do not affect adult flying midges, only larvae. Allow 2 to 3 weeks for the midges to disappear completely.

Dissolve the entire sachet in the indicated amount of water, at room temperature between 15 and 25°C. Cold or hot water kills nematodes.

This temperature is crucial because nematodes are living organisms sensitive to thermal shock. Mix gently to avoid damaging them and use the solution within one hour.

Water the substrate of all your plants generously, even those that appear healthy. Then keep the soil slightly moist for two weeks.

Avoid applying in direct sunlight or under an intense horticultural lamp, UV rays quickly destroy surface nematodes.

Felti nematodes are completely harmless to your plants, pets, and family.

These microorganisms are naturally present in all healthy soils. They exclusively target certain insect larvae through specific chemical receptors and have no effect on roots or plant tissues.

You can treat all your plants without exception: tropical plants, succulents, herbs, even fragile cuttings or seedlings.

Unlike chemical insecticides, nematodes leave no toxic residue and do not affect the beneficial microorganisms in your substrate.

Yes, that's perfectly normal during the first two weeks following treatment.

The nematodes only affect the larvae present in the substrate, not the adults already in flight. The midges you see are those that emerged before or just after treatment.

Their life cycle lasts approximately 3 weeks. Without new viable larvae, the population will naturally die out. Be patient and keep the substrate moist to keep the nematodes active.

If the midges persist after 3 weeks, repeat the application. A heavy infestation may require two treatments spaced 15 days apart.

Nematodes combine perfectly with other biological control methods for maximum effectiveness.

The sticky yellow traps capture the flying adults while the nematodes eliminate the larvae. This dual action significantly accelerates the eradication of the infestation.

However, avoid chemical treatments or black soap in watering for two weeks following application, as they could affect the nematodes.

To prevent recurrence, improve the drainage of your substrates withperliteand allow the surface to dry between waterings.

Felti nematodes offer a radical solution where other methods only limit the problem.

Yellow traps capture adults but do not prevent larvae from developing. Sand on the surface hinders egg-laying but does not eliminate existing larvae. Chemical insecticides pollute your home and can stress your plants.

Nematodes attack the problem at its source: the larvae. They self-multiply in the substrate and continue their action for several weeks after application.

This is the method used by professional nurserymen, adapted here to a practical format for your houseplants.