Vine Weevil Nematodes - 100sq.m

Vine weevil Nematodes (species: Heterorhabditis bacteriophora) target vine weevil larvae living in...

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Product Information

Full details

The B&Q Vine Weevil Nematodes are an ideal biological control solution for gardeners looking to protect ornamental plants and fruit crops from root-damaging vine weevil larvae. By introducing beneficial microscopic worms (*Heterorhabditis bacteriophora*) into the soil, this treatment effectively targets pests in containers and garden beds while remaining safe for pets and wildlife; however, its efficacy is strictly dependent on maintaining specific soil moisture and temperature conditions above 12ºC.

All features

Model Part Number	VW50
Brand	B&Q

Extended Product Information

FAQs

Are these nematodes safe for my pets?

Yes, they are completely safe for pets, children, and beneficial garden wildlife.

Can I use these in the middle of winter?

No, unless you are using them in a heated greenhouse or polytunnel where you can guarantee soil temperatures remain above 12ºC.

How do I apply them to pots?

Mix the nematodes with water according to the instructions and use a watering can to drench the soil around the plant base.

How long do I need to keep the soil moist?

You must keep the soil damp for at least two weeks after application to ensure the nematodes can navigate the soil successfully.

Do I need any special equipment to apply this?

No, a standard garden watering can is sufficient, though a nematode applicator can help achieve more even coverage over larger areas.

What should I do if the expiry date has passed?

Do not use the product, as the nematodes are live organisms and their efficacy is not guaranteed past the expiry date.

Troubleshooting

Nematodes are not reducing the vine weevil population

Check that the soil temperature was consistently above 12ºC during the two weeks following application.

Treatment failed after application

Ensure the soil did not dry out; moisture is essential for nematode survival and movement.

Product was left out of the fridge

If left out for a short period, it may still be viable, but use immediately as the shelf life is significantly reduced once removed from cold storage.

Pros and Cons

Pros

Targets larvae directly in the soil to prevent plant death
Environmentally friendly and safe for pets and children
Easy to apply using common gardening tools like a watering can
Covers a large area of up to 100 square metres

Cons

Requires soil temperatures to be consistently above 12ºC
Soil must be kept consistently moist for two weeks post-application
Short shelf life as the product consists of live organisms
Specific application windows in spring and autumn limit use

Setup, Compatibility & Care

Before use, store the pack in a refrigerator to keep the nematodes dormant and healthy until the application date. To prepare, follow the included instructions to mix the product with water correctly. Use a clean watering can or a dedicated nematode applicator to distribute the mixture evenly over the target soil area. Once applied, ensure the soil remains damp for at least two weeks. Avoid using chemical pesticides alongside this treatment, as they may negatively impact the nematode population. Always check the expiry date on the packaging, as these are live organisms and lose viability over time.