Cranberry Girdler |
Utah County: (801) 373-2065 Salt Lake County: (801) 347-1240 |
Appearance: Dirty-White or Gray, brown-orange head, up to 3/4 of an inch. No distinct markings like Sod Webworm. Type of Damage: Browns out the lawn causing it to pull up like a rug Peak Damage Season: July - September Treatment: Insecticide How do I know if I have Cranberry Girdler? In the Caterpillar stage Cranberry Girdler is characterized by a dirty-white or gray color with brown-orange heads. They can grow up to 3/4 of an inch in length and while similar to Sod Webworm, bear no distinct markings. Also known as Subterranean Webworm, Cranberry Girdler spends its time in the crown and roots of the lawn beneath the surface. The damage caused by the caterpillars causes the lawn to brown out in spots and spread rapidly. Pull on these areas with your whole hand. If Cranberry Girdler is at fault, it will pull up like rug and you will see the larvae in the soil. The Adults are moths with tube shaped bodies about 1/2 an inch long with a 3/4 of an inch wingspan. Their wings are a buff-color with brown and creme stripes and three black dots near each wing tip. They are active during the night and can be found flying near the ground. When is Cranberry Girdler most common? While most common in the late summer months (July - September), we have seen Cranberry Girdler damage as early as April. How do I get rid of Cranberry Girlder? To control the problem, apply insecticide directly to the affected areas and check back weekly for improvement. Repeat this until the spreading has ceased and you can see the caterpillars lying dead on the soil (this should be within a week or two). The lawn will then naturally repair itself as it continues to grow back in the affected area(s) within the next four to six weeks. For more information click here: http://extension.usu.edu/files/publications/factsheet/cranberry-girdlers07.pdf 
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