Although they’re found in Florida from June to October, sod webworms usually cause the most damage during the month of August.
Sod webworms start life as an egg laid by an adult moth. The eggs hatch into caterpillars that are about an inch in length. These brown and green caterpillars are attracted to beautiful looking lawns that are healthy and lush. The caterpillars eventually become adult moths and the cycle starts all over again.
Sod webworms attack a variety of grasses, but their grass of choice is St. Augustine.
Here are some signs of an infestation:
- Small, brownish-gray moths flying in a jerky, zigzag pattern over the lawn in the late afternoon
- Large brown areas of grass that look like a badly cut lawn. Jagged or uneven patches in the lawn.
- White spots on grass blades indicating that young sod webworm caterpillars are present
What can you do?
- Follow proper mowing and watering techniques.
- Monitor your lawn for signs of an infestation.
- Seek treatment quickly before there is extensive damage.