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SKU: 5339
Regular price £12.99

Nematode Worms - Live, Organic Pest Control

Fight almost all pest problems quickly, easily and safely with beneficial nematode worms.

Nematodes completely harmless to you and your plants, but parasitic to most grow room pests.

A single pack of microscopic worms treats 1000 litres of growing media (as a soil drench), or a 10m2 area (foliar spray).

Nematodes are fast-acting and easy to use. Once applied, nematodes remain active for 6 weeks!

There are 10 million nematodes of two different species per pack! Together, they'll treat:

Sciarid fly larvae, cabbage root fly, thrips, carrot root fly, shore flies, cabbage root fly, leaf miner, ants, caterpillars, cutworms, gooseberry sawfly, coding moth, leatherjackets, onion fly, vine weevil larvae, beetle larvae, fungus gnats

There's no chance of overdosing, so don't be shy - it's better to buy too many and eradicate your problem once and for all.

  • 10,000,000 beneficial nematodes per pack

  • Treats 1000 litres of media (media drench), or 10m2 area (foliar spray)

  • Two nematode species to fight most pests: Steinernema feltiae and Steinernema carpocapsae

  • Living organisms that are easy to apply and quick to work

  • Active for up to 6 weeks

  • A great option for organic gardening - great for controlling pests

  • Biological control that's harmless to you and your plants - safe for pets, children, birds, fish, etc.

  • No risk of over-applying - won't damage crops

What Are Nematodes?

Parasitic nematodes are tiny, microscopic roundworms that are naturally found in all healthy soils. These invertebrates are harmless to you, your plants, and most animal groups, but parasitic to most grow room pests.

You can use them to quickly, easily and safely combat most pest problems.

When watered into your media, the nematodes seek out a host by swimming in the thin film of water that clings to particles in your growing media. For this reason, it's important that your media stays moist (not too wet). Nematodes thrive in moist soil.

Nematodes are active in temperatures as low as 4°C, but work better in soil temperatures higher than 14°C.

Nematodes are naturally found in all healthy soils.

How to Use Nematode Species

You'll need one pack for every 1000 litres of growing media.

Media drench

Make sure your growing media is moist (but not too wet) with an open structure and temperature of 14oC.

Hand watering with Nematodes

  • Mix each pack with at least 10 litres of fresh water and agitate until well mixed

  • We recommend using a low pressure mixing pump (e.g. MaxiJet 500) but a large spoon or stick is fine

  • Use at least 100ml of the solution for each plant, pouring evenly over the soil to cover the plant roots

  • Remember, you can't overdose on Nematodes!

Using Nematodes Irrigation system

  • Empty the tank and flush the irrigation lines with water

  • Remove any mesh filters

  • Make sure your dripper has a diameter of at least 1mm

  • Mix each pack with at least 10 litres of water

  • Add a mixing pump to the tank to constantly agitate the solution

  • Once the tank's empty, immediately flush lines with water so all nematodes reach the soil

Spraying with Nematodes

  • Use 1 pack to treat 10 square metres

  • Mix the pack with no more than 10 litres of water

  • Keep the solution agitated with a submersible pump

  • Transfer the solution to a sprayer

  • Spray 1 litre per square metre

  • Use the sprayer on a large droplet setting so you don't kill the nematodes off


  • Keep your soil moist so nematodes can swim and seek out hosts

  • Make sure your soil temperature is kept between 14°C - 26°C

  • Add as soon as you see the first sign of pests

  • Biological control can be supplemented with other species, like Hyopaspis miles.

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