GET STARTED

Tropical Sod Webworms

Active Seasons

Appearance and Size Facts

  • Size: Range from 3/4 to 1 inch long in the caterpillar stage
  • Build protective silken webs, which they then cocoon into underground
  • Feed on the upper root systems, stems, and blades of grass
  • The moths, are erratic and weak flyers and only live a few days
  • The moths are only active at dusk, resting near the ground during the day

Behavior and Habitat of Tropical Sod Webworms

Sod webworms will feed on the upper root systems, stems, and blades of grass. They build protective silken webs, usually on steep slopes and in sunny areas, where they feed and develop. In early May, they pupate in underground cocoons made of silk, bits of plants, and soil. About two weeks later, adults emerge. Beginning in May, moth flights may occur until October. The moths, erratic and weak flyers, live only a few days and feed solely on dew. They are active at dusk, resting near the ground in the grass during the day. Adult sod webworms rest in the turf and on shrubbery during the day and randomly scatter their eggs into the grass in the late afternoon and early evening while flying in a zigzag fashion just above the turf surface. The eggs, which are deposited indiscriminately over the grass, hatch in 7 to 10 days. In South Florida, tropical sod webworms may produce new generations very quickly.

Signs of Infestation of Tropical Sod Webworms

Signs of sod webworm injury are patches of yellow or brown grass on the lawn which are most noticeable in sunny areas, while weeds and shady areas of lawn remain green.

Tips for Prevention of Tropical Sod Webworms

Rake up thick thatch and destroy it and try drenching infested patches with a soap solution.

Tropical Sod Webworm Gallery

Latest Pest Control News

What Should I Do If My Home is Infested with Rodents?

What Should I Do If My Home is Infested with Rodents?

Although most south Floridians welcome the cooler weather, it may draw inside several unwanted guests. As temperatures drop, rodents are more likely to invade homes looking for warmth. We can't blame them, but we also do not have to live with them. Rats and mice can strike terror in even the most...

Read More ›
What are these Large Brown Spots in my Yard? Brown Patch Fungus.

What are these Large Brown Spots in my Yard? Brown Patch Fungus.

Most South Floridians embrace the cool winter weather, if we are lucky. And just as we finish battling Chinch Bugs all summer long, now we have a new problem in our lawns: Brown Patch Fungus. If you notice large circular patches of brown grass in your yard, call Hulett Environmental Services today...

Read More ›
How to Rid Your Home of Big Headed Ants

How to Rid Your Home of Big Headed Ants

Big Headed Ants are an invasive species that are common in subtropical climates, like we have here in south Florida. They can be particularly difficult to control due to a single colony having multiple queens, reproducing year round. Often, multiple colonies can completely take over a landscape,...

Read More ›