Pest identification
What's eating my thornless boysenberry?
Raspberry beetle (Byturus tomentosus)
Signs: Creamy-white grubs inside ripening berries; hollow or collapsed fruit at harvest.
Control: Time insecticide spray to first pink fruit. Winter-dig soil to expose overwintering pupae. Use sticky pheromone traps to monitor adult emergence.
Spotted wing drosophila (Drosophila suzukii)
Signs: Soft, oozing ripe berries with tiny internal maggots; fruit unmarketable within days.
Control: Harvest frequently; exclude with insect-proof mesh (max 1 mm). Dispose of all damaged fruit hygienically.
Aphids (Amphorophora idaei)
Signs: Sticky, distorted shoot tips; vector of Raspberry mosaic virus causing cane decline.
Control: Insecticidal soap or neem oil spray in spring. Replace any virus-stunted canes with certified stock.
Birds
Signs: Entire clusters of ripe berries removed; crop losses can be heavy in a short window.
Control: Drape with bird-proof netting at colour change; remove netting promptly after harvest to avoid trapping wildlife.
Keep thornless boysenberry pest-free
Healthy plants resist pests best. Get the basics right:
Thornless Boysenberry pests — FAQ
What is eating my thornless boysenberry?
Thornless Boysenberry has identical pest vulnerability to its thorned parent: raspberry beetle maggots in fruit, spotted wing drosophila in ripe berries, aphids on new canes, and bird predation at harvest. The thornless mutation offers no pest resistance. Raspberry beetle is the principal fruiting-season pest.
How do I get rid of raspberry beetle (byturus tomentosus) on thornless boysenberry?
Creamy-white grubs inside ripening berries; hollow or collapsed fruit at harvest. Time insecticide spray to first pink fruit. Winter-dig soil to expose overwintering pupae. Use sticky pheromone traps to monitor adult emergence.
How do I get rid of spotted wing drosophila (drosophila suzukii) on thornless boysenberry?
Soft, oozing ripe berries with tiny internal maggots; fruit unmarketable within days. Harvest frequently; exclude with insect-proof mesh (max 1 mm). Dispose of all damaged fruit hygienically.
How do I get rid of aphids (amphorophora idaei) on thornless boysenberry?
Sticky, distorted shoot tips; vector of Raspberry mosaic virus causing cane decline. Insecticidal soap or neem oil spray in spring. Replace any virus-stunted canes with certified stock.
How do I get rid of birds on thornless boysenberry?
Entire clusters of ripe berries removed; crop losses can be heavy in a short window. Drape with bird-proof netting at colour change; remove netting promptly after harvest to avoid trapping wildlife.