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Western Flower Thrips

Practical biological control, IPM and environmental pest-management knowledge.


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Western Flower Thrips

Overview

Western flower thrips (Frankliniella occidentalis) is one of the most important thrips species in protected horticulture worldwide.

It is particularly important because of:

  • flower feeding behaviour
  • rapid protected-crop reproduction
  • virus transmission relevance
  • hidden feeding behaviour
  • resistance management pressure

Crop relevance

Important in:

  • strawberries
  • peppers
  • cucumbers
  • ornamentals
  • chrysanthemums
  • propagation crops
  • nursery systems

Symptoms

Typical symptoms include:

  • silvering
  • bronzing
  • flower damage
  • distorted growth
  • fruit marking
  • black feeding spots
  • pollen contamination

Virus relevance

Western flower thrips is commercially important because it may vector plant viruses in susceptible systems.

This makes early detection and ecological stability especially important.


Biological control relevance

Common biological controls include:


Related pages