Winter Moth (Operophtera brumata)
Defoliating moth of fruit trees and ornamentals whose larvae feed in spring.
Winter moth (Operophtera brumata) is a common defoliator of fruit trees and broadleaved ornamentals. Larvae feed on buds and young leaves in spring, causing severe defoliation and reduced fruit set. Biological control includes Bacillus thuringiensis (Bt) sprays for young larvae and entomopathogenic nematodes for pupae in soil, together with tree banding and encouragement of natural enemies such as birds and parasitoids.
Biological Controls for Winter Moth (Operophtera brumata)
The species below are examples of beneficial organisms commonly used against winter moth (operophtera brumata). Recommendations are based on published biological control information and practical IPM experience. Always confirm suitability for your crop, growing system and local conditions before use.
Information shown for reference only.
Trichogramma spp.
Environment: outdoor
Temperature Range: 10.0 – 25.0°C
Rate: Not applicable (UK)
Frequency: Not applicable (UK)
Egg parasitoids and conservation of natural enemies help suppress winter moth as part of IPM.
Orius laevigatus
Environment: all
Temperature Range: 18.0 – 35.0°C
Rate: 0.5–2/m²
Frequency: support only; establish early if present
Support-only: may contribute to egg or very early larval predation. Not a primary moth control; use alongside Trichogramma and monitoring.
Further BioWiki Reading
For more background on pest biology, beneficial insects and environmental factors, use the BioWiki alongside this practical control guide.
Related Biological Solutions
Growers dealing with winter moth (operophtera brumata) often also monitor these pests as part of a complete IPM programme: