Lawn grubs is a problem that needs to be addressed as soon as they are identified. There are three types of grub that affect lawns in South East Queensland and they are:
- Army Worm
- Sod Web Worm
The grubs develop into a moth like insect that are most active during the summer months and into autumn.
If there are orange / black wasps (“The Ike Newman Wasp”) flying over your lawn, this will usually indicate that there are grubs present, as the wasp is looking for a host to lay its eggs.
The lawn grubs are nocturnal and can be hard to detect as they dwell within the depths of the thatch. Drenching the affected area with soapy water can bring the grubs to the surface for identification. Once the grubs are identified, treat them with a lawn insecticide which is easily available from gardening stores and nurseries. Late afternoon is the best time for application. Once applied, water the lawn lightly to allow the treatment to soak into the thatch so the grubs can ingest the poison. Over watering will just wash the insecticide away.
It may be necessary to repeat this process due to the fast turn around of the grubs’ life cycle.