Spider Mites - Knowledgebase Question

Denver, Co
Avatar for tswarn1
Question by tswarn1
July 16, 2010
How do I kill Spider Mites in the lawn?

Answer from NGA
July 16, 2010
Are you sure you have spidermites in your lawn? They like dry dusty places and don't usually invade lawns. If you are seeing webbing in your lawn you may have a population of sod webworms. The adults are small moths and the larvae are small caterpillers that leave thin webs on the grass blades. The surest way to tell if you have sod webworms is to find a suspected area of infestation (brown patches). Get down on your hands and knees, take your two index fingers and part the grass blades in the area between dead and live grass and look for an area with small green pellets. The pellets, called frass, are the excrement of the larvae and indicate that a larva is close by. Sod webworm adults are about 3/4-inch long, cigar-shaped and buff-colored moths. They typically roll their wings around the body when resting on a grass blade. Two small snout-like projections are visible at the front of the head. You can control these pests with Bt (bacillus thuringensis).

If you do in fact have spidermites (also called clover mites), you can control them with Bonide Mite-X Spider Mite Killer. Be sure to follow label directions for application.

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