Problems with spider mites have declined in western North Carolina as more growers leave ground covers around their fields and refrain from using insecticides that aggravate mite problems. They can still develop into damaging populations, especially in dry years. Recognizing when a problem is starting is the key to keeping problems in check.

Online Information

CTN 29: Spruce Spider Mite on Fraser Fir – fact sheet with life cycle, scouting and treatment thresholds, factors that increase mite problems, and controls

Focus on Mite Control – Information on cultural practices and miticides

SSM – Facts at a Glance – quick facts about spruce spider mites (1-page pdf version with photos)

Videos

Scouting for Christmas Tree Predators – including spider mite predators

Using Predatory Mites in Strawberries – has some great video of spider mite predators that are also found in Christmas trees

Photo Gallery