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Pests
Grape Berry Moth Damage
Commonly affects: Vitis vinifera, V. labrusca (Grape)
Small webbing appears on flower clusters and developing berries, with larvae tunnelling into fruit, causing premature colouring and rot around the entry hole.
Potential Causes
- 1Grape berry moth larvae feeding on flowers and developing fruit
- 2Wild grapevines nearby acting as an alternate host and population source
- 3Warm weather supporting multiple generations per season
Solution Steps
- 1Remove wild grapevines near the vineyard that could host the moth
- 2Apply a targeted insecticide timed to egg-laying periods if damage is significant
- 3Monitor with pheromone traps to time treatments accurately
- 4Remove and destroy visibly infested clusters to reduce the following generation's population
Prevention Tip
Removing wild grapevines in the surrounding area removes a major population source that keeps reinfesting cultivated vines each season.
