ZonePlant

Pest on crop

Western Flower Thrips on spinach

Frankliniella occidentalis

Tiny slender insect that rasps leaf and flower surfaces. The primary vector for Tomato Spotted Wilt Virus and Iris Yellow Spot Virus, which makes it more damaging through disease transmission than direct feeding.

Pest
Western Flower Thrips
Scientific name
Frankliniella occidentalis
Crop
Spinach
Total hosts
10

Western Flower Thrips on spinach

Detailed guidance for this section is being prepared. Check back soon.

Signs on spinach

  • Silvery streaks and stippling on leaves and flower petals
  • Distorted new growth
  • Tiny dark fecal spots
  • Russeting and bronzing on fruit

IPM controls

  • Blue sticky traps for monitoring (more attractive to thrips than yellow)
  • Reflective mulches deter winged adults
  • Spinosad spray during peak flight
  • Encourage minute pirate bugs and predatory mites (Amblyseius)
  • Remove weed hosts at field edges; Russian thistle and pigweed support populations

Other crops affected by western flower thrips

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