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Chafer Grub Control with Heterorhabditus

from £14.99
Tax included.

Chafer beetle larvae are large, white grubs that feed on grass roots causing damage to lawns and other grassed areas. Grass growth slows and yellow patches appear.  Secondary damage may be caused by birds pulling up the lawn to feed on the grubs. 

Chafer beetles emerge from the lawn, lay their eggs, which hatch into grubs feeding on the grass roots before burrowing deep into the ground. They then lie dormant deep in the soil before moving to the surface in the spring to emerge as beetles again.

Wildlife such as foxes and badgers can also create a lot of damage as they dig up your lawn in search of grubs for food. Rooks, magpies, crows and woodpeckers feeding on your lawn are a good sign of a Chafer grub infestation.

If the life cycle is not broken re-infestation occurs and the problem gets progressively worse.

Control with parasitic nematodes (Heterorhabditis sp.)

These microscopic transparent worms feed and multiply inside the larvae causing death. Supplied as an easy-to-mix powder to be diluted with water before use. Apply to moist compost/ soil using a watering can or sprayer. 

Available to order between: 1st March - 1st October


When to use

If you have only just discovered Chafer Grubs in your lawn or had a severe infestation in the past, apply to moist lawns during April or May and in August to early October. This is when the young grub larvae are active.

Application in spring may aid control but August to October is the recommended time to apply. 

How to use

Apply to moist soil when the soil temperature is above 10ºC (50ºF) and ensure the soil does not dry out for at least two weeks after applying nematodes.

Nematodes are capable of surviving the odd frost so don't worry if the temperature falls after you have applied the nematodes.

Our nematodes come complete with instructions and can be applied using a watering can or nematode applicator.

More information

How do Nematodes work?

When nematodes are introduced, they actively search for white grubs that are present in the root zone. The nematodes penetrate the larvae through natural body openings or directly through the body wall. They then multiply inside the grub.

When the grub decomposes, the new generation of useful nematodes, looking for new victims, disperse.   

Storing Nematodes

An unopened pack may be stored in a fridge (5°C) for up to 3 weeks (see expiration date on pack).  Do not freeze.  Once opened, the entire pack contents should be used immediately