Chrysanthemum Leafminer (Phytomyza syngenesiae)
Leafminer causing serpentine mines in chrysanthemum and related ornamentals.
Chrysanthemum leafminer (Phytomyza syngenesiae) is a specialist leafmining fly of chrysanthemums and some related ornamentals. Larvae mine within leaves, creating pale serpentine trails and blotches that reduce quality. Biological control is achieved with parasitoids such as Diglyphus isaea and Dacnusa spp., supported by sanitation and removal of mined leaves.
Biological Controls for Chrysanthemum Leafminer (Phytomyza syngenesiae)
The options below are examples of beneficial insects and biological products commonly used against chrysanthemum leafminer (phytomyza syngenesiae). Always refer to supplier guidance and product labels for crop safety and local registration status.
Diglyphus isaea
Product: Digline
Environment: glasshouse
Temperature Range: 15.0 – 30.0°C
Rate: 0.25–1 wasp/m²
Frequency: Weekly introductions into affected blocks
Effective parasitoid for leafminer in ornamentals.
Related Biological Solutions
Growers dealing with chrysanthemum leafminer (phytomyza syngenesiae) often also monitor these pests as part of a complete IPM programme: