The best time to control chafer grubs is when they are still small. The first treatment can be done in April or May, followed by repeat treatments in August and late September. Note that chafer grubs live underground for 3 to 4 years, so grubs of dif
Chafer grubs are the larvae of several beetle species, such as the cockchafer and rose chafer. They are white, have a C-shaped curved body, a brown head, and grow up to 3 cm long. Chafer grubs feed on the roots of plants and grass, which can lead to
Chafer grubs feed on the roots of grass, preventing the lawn from absorbing enough water and nutrients. This causes brown, dry patches that come off when you pull on them. Without treatment, the damage can spread and seriously weaken the lawn.
A healthy lawn is less susceptible to grubs. Ensure regular maintenance such as fertilising, adequate watering, and scarifying. Scarifying is removing moss and dead grass so that your lawn can better absorb air, water and nutrients.
Research shows that the Heterorhabditis bacteriophora nematode, our Phora nematode, works best for controlling grubs. This nematode specifically targets the larvae of beetles, such as grubs, and is very effective at higher temperatures of up to 33°C.