Koppert Larvanem Vine Weevil Killer

A nematode species that targets the larvae of various species of beetle, such as the black vine weevil Otiorhynchus sulcatus.

Pack Sizes:

Standard: Pack of 50 million nematodes – treats 100m²
Large: Pack of 500 million nematodes – treats 1000m²

52.50285.00 excl. VAT (23%)

Koppert Larvanem Vine Weevil Killer image
Koppert Larvanem Vine Weevil Killer

Koppert Larvanem Vine Weevil Killer

A nematode species that targets the larvae of various species of beetle, such as vine weevil. Larvanem contains a special strain of Heterorhabditis bacteriophora, for more than 25 years, this parasitic nematode has been the top product used to combat vine weevil. This biological approach to combating vine weevil is most effective because it attacks the larvae, this is the only proven way to fully eradicate vine weevil.

How does Larvanem work?

After application, the nematodes actively search for their prey and penetrate them. The nematodes feed on the contents of the prey, excreting specific bacteria from their digestive tracts as they do so. These bacteria convert host tissue into products that the nematodes can easily ingest. The larvae die within a few days.

The below infographic is designed to inform the user as to the life stage of the organism throughout the year.

Larvanem Application times

Visible effects: Affected larvae turn pink-red or even brown.


Application Rates

LARVANEM</b preventive light curative heavy curative
Dosage n/a 500,000/m² 1,000,000/m²
m²/standard packaging n/a 100 50
m²/large packaging n/a 1000 500
interval (days) n/a 14 14
Frequency n/a 2x 2x

Optimal Conditions

  • The moisture content of the soil must be high
  • Soil temperature between 14 and 33°C
  • Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight
  • Leaf applications should only be carried out in the evening to minimise the influence of UV light and to maximize moisture availability for the nematodes
  • Larvanem can be applied by watering can, sprinkler, backpack spray unit or vehicle-mounted spray unit, trickle irrigation
  • Take stock of nematodes 1-2 weeks prior to forecast application period to facilitate application in optimum circumstances.
  • Apply when soil temperatures are warm (above 14 °C) and moist.
  • Apply 5-10 mm water to the turf the evening before treatment.
  • Subsequently apply 5 mm of water 1-2 hours before treatment.
  • Aerate the soil immediately prior to application with a sarel roller to ease nematode transition into soil contact.
  • Apply Entomopathogenic Nematodes 4-5 weeks post adult emergence.
  • Apply early in the morning, in the evening or on a cloudy day as the nematodes will be killed by UV light.
  • Apply when rain fall is forecast.
  • Remove all filters from the sprayer, these can be within the lance handle or top hat filters at the nozzle or alternatively in filter bowls within pipes after the pump.
  • Ensure that the sprayer is completely clean.
  • Apply with a penetrant wetting agent to enable more efficient passage into the soil.
  • It is important that the nematodes are delivered into contact with the soil as quickly as possible, excessive thatch within the turf sward will inhibit the nematodes passage into the soil.
  • Half fill the sprayer with clean water.
  • Put the contents of the pack into a bucket containing 5 litres of water (15-20 °C).
  • Stir well and allow to soak for 20-30 seconds.
  • Stir well once again and poor the entire solution into the spray tank.
  • Top up until the required amount of solution is in the tank.
  • Spray immediately after preparation over a wet surface. Maximum (12 bar pressure).
  • Use the whole pack in one go, as the distribution of nematodes in the pack is not homogenous.
  • Immediately after applying, water the grass area well (at least 2-5 litres per m²) so the nematodes are washed into the soil to reach the roots where the pests will be.
  • Ensure the turf area does not dry out after applying nematodes. If necessary, keep the area well-watered for at least two weeks.

Localised Spot Treatment
With Watering Can
Broad Application To
a Large Area

  • Fill a clean bucket with clean water.
  • Take the vine weevil nematodes out of the fridge and open the containers.
  • Tip the entire contents (minus the container) into the bucket and stir gently. This is your solution.
  • Rinse the container out in the bucket to ensure you have mixed in all the nematodes.
  • Pour a proportion of the concentrated mix into a watering can and top up with fresh water. Mix at a ratio of either 1:10 or 1:5, depending on how the infestation is.
  • Water on soil/lawn and then water in with hose/watering can.
  • Standard 50ml pack treats between 50 and 100 m2.
  • Wash the feeder through with water to ensure it is clean.
  • Add entire contents of the pack to the bowl of the feeder. Then fill the bowl with water and stir to mix thoroughly. Attach the hose.
  • Taking care to keep the feeder in an upright position apply evenly to the whole of the area for 8 minutes using a side-to-side motion to keep the nematodes well mixed. During this time most of the nematodes will have been applied.
  • Treat the same area again for a further 8 minutes (or 16 minutes for lawn applications) to apply the remaining nematodes as well as to make sure they are adequately watered in. Applications to lawns require more water to ensure the nematodes are washed through the grass thatch.
  • Adhering strictly to the application timings will ensure that any remaining colour in the bowl will be due to inert carrier only and that you have performed an even application.
  • This method provides a simple and effective application, however, it is important to follow the instructions exactly to obtain even coverage.

To aid the efficiency of the nematodes into the soil profile, apply with Aqua-Zorb 45 Wetting Agent.

We do not sell this product during the period when the larvae are not susceptible to control using nematodes.

Larvanem Vine Weevil Killer must be used within 3-4 weeks of being received, keep refrigerated until used. Pitchcare Ireland is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions.

  • If Larvanem is ordered by 09.00 hours on a Thursday, they will be delivered to you by the end of the following week.

For further information on Larvanem Vine Weevil Killer, please contact a member of our technical sales team on +353 1 841 7399.

Delivery Information

Delivery charges (if applicable) applied at checkout. Next working day delivery is available on ‘In Stock’ items, on orders placed before 12 noon. Please allow 3-5 working days on all other orders – possibly longer during the festive season & bank holidays. Please note deliveries to more remote areas may also take longer. More delivery info Please Note: If you have any access restrictions for lorries or large vehicles please speak to our sales team on . Collection from our Naul, Co. Dublin, Trade Counter is available for this product. More info on collections

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52.50285.00 excl. VAT (23%)

Koppert Larvanem Vine Weevil Killer image
Koppert Larvanem Vine Weevil Killer