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60 sqm Sciarid Fly (Fungus Gnat) Nematodes

60 sqm Sciarid Fly (Fungus Gnat) Nematodes

Regular price £9.00 GBP
Regular price Sale price £9.00 GBP
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📦 Please note this product is shipped direct from supplier

Save your houseplants and seedlings from Sciarid fly/Fungus gnats and larvae damage with our parasitic nematodes. 

Biological controls are not always kept in stock, they are ordered in fresh.  This can sometimes lead to a time lag between when you place the order and when it is despatched.

The adult fungus gnats/sciarid flies live on and around the compost surface of pots, more commonly indoors rather than outside. The flies themselves are an unsightly nuisance but most of the damage is caused actually by their young. The small white larvae live in the compost and feed on the tender roots of plants and cuttings. They will also come to the surface to feed. 

Nematodes are more effective if the sciarid population is high. The nematodes are watered on, and attack the sciarid larvae underground. Parasitic nematodes seek out suitable hosts by swimming in the thin film of water on soil particles, locating hosts by detecting carbon dioxide and other waste products. Once they find a host, they enter the body cavity through the breathing or feeding systems, and release bacteria (Xenorhabdus). The bacteria kills the host within hours, and the nematodes grow and reproduce within the 'broth', which they produce. The next generation of infective juveniles leaves the dead host, and moves in search of fresh hosts.

You can read the instructions for the nematodes HERE.

Combine with yellow sticky traps for better control.  A second treatment may be required depending on the level of infestation and the life cycle stage of the pest.

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Pest Diagnostic Calculator

Select the symptoms disrupting your ecosystem. Our biological targeting matrix will instantly deploy the perfect predatory counter-measure based on the common symptoms selected.

1. Canopy, Leaf & Fruit Indicators

2. Stem, Base & Structural Markings

3. Subterranean & Soil Matrix Indicators

Biological Pest Control — Nematodes & Beneficial Predators

Control garden pests naturally with our range of biological pest
control products, including parasitic nematodes, predatory insects, and
beneficial predators. Designed for use in gardens, allotments, raised
beds, and houseplants, our biological controls offer a safe,
chemical-free alternative to pesticides — protecting your plants while
preserving the living soil ecosystem.

Please note:
all products in the Biological Pest Control range are sent direct from our supplier and
may be dispatched separately from other items in your order.

Frequently Asked Questions

Find answers to common questions about our products and services

Biological pest controls use living organisms — such as beneficial nematodes, predatory insects, and naturally derived compounds — to manage garden pests without the need for harsh chemicals. They work in harmony with your soil and plants, making them ideal for organic and living soil growing.

Yes. Our biological pest control products are naturally derived and pose no harm to children, pets, or beneficial wildlife when used as directed. They target specific pests without disrupting the wider garden ecosystem.

Please allow up to 6 working days for delivery. Our biological pest control products are dispatched directly from our supplier to ensure they reach you in the best possible condition.

These products are fulfilled directly by our trusted supplier. This ensures the fastest possible dispatch and that live or perishable biological products are handled correctly throughout the delivery process.

For best results, apply in the early morning or evening when temperatures are cooler and UV levels are lower. Avoid applying during heavy rain or extreme heat. Always follow the specific guidance included with each product for optimal effectiveness.