Larvae and adults pierce the leaf surface and suck out cell contents causing extensive 'silvering'.
WFT can also transmit Tomato Spotted Wilt Virus on chrysanthemums and many other crops. Other species of thrips are also being found, particularly on specimen plants. If in doubt send a sample to Fargro.
There is a pheromone for monitoring of Western Flower Thrips (see pheromone traps).
- Preventative: 50 million per 400 m2 or 250 million per 2000 m2.
- Standard control: 50 million per 200 m2 or 250 million per 1000 m2.