Agralan Chafer Grub & Vine Weevil Dual Control Nematodes
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Agralan Chafer Grub & Vine Weevil Dual Control Nematodes

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Agralan Chafer Grub & Vine Weevil Dual Control Nematodes

Vine weevil larvae and chafer grubs are two of the most damaging soil pests in UK gardens, feeding unseen on plant and grass roots. Vine weevil larvae attack a wide range of ornamental and edible plants, often killing them by destroying the root system. Chafer grubs, on the other hand, feed on lawn roots, causing patches of dead grass that can be easily lifted. Lawns may also suffer further damage as birds and wildlife dig for the grubs.

How to Control the Chafer Grubs & Vine Weevils

Agralan Chafer Grub & Vine Weevil Dual Control Nematodes offer a powerful, natural solution to both pests in one treatment. These beneficial nematodes (Heterorhabditis bacteriophora) actively seek out and infect the larvae in the soil, releasing bacteria that quickly kill them. The nematodes then multiply within the host, helping to spread control throughout the treated area. This biological method targets only the pests, making it completely safe for children, pets, wildlife and beneficial insects, and suitable for use on all plants, including fruit and vegetables.

How to Use Nematodes

Mix the nematodes with water and apply to moist soil or compost using a watering can or nematode applicator. For best results, apply when soil temperatures are above 12°C, typically from spring through to early autumn (March to October). Ensure the soil remains moist before and after application to help the nematodes move effectively. As this is a live product, store in the fridge and use before the expiry date. Regular monitoring and timely application will help prevent severe damage from both vine weevil larvae and chafer grubs.

Frequently Asked Questions

Are nematodes safe for pets, children, and wildlife?

Yes. Beneficial nematodes are safe around children, pets, birds, and other wildlife when used as directed. They target specific insect or slug species and do not affect mammals, birds, or plants.

Can I use nematodes in a greenhouse?

Yes. Several nematode species are particularly well suited to greenhouse use, including those for fungus gnats, sciarid fly, thrips, and housefly. Apply to the growing medium and keep it moist after treatment.

How do I apply nematodes?

Mix the pack with water according to the label, then apply with a watering can fitted with a coarse rose, a hose-end applicator, or a sprayer on a coarse setting. Water in afterwards and keep the soil moist for two weeks.

Are nematodes a form of biological control?

Yes. Nematodes are one of the most widely used biological control methods in UK gardening. They are living organisms that target specific pests naturally, without chemical residues, making them a strong fit for organic and wildlife-friendly growing.

Are nematodes better than slug pellets?

For below-ground slug control, nematodes are generally the stronger option. They target slugs in the soil where most feeding and egg-laying happens, leave no chemical residue, and are safe for wildlife, children, and pets.Read our nematodes for slugs blog for a full breakdown, or see our guide to slug pellets if you want to compare approaches.

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