hazelnut weevil

Symptoms

Small (1-2mm) perfectly circular exit hole in nut shell, kernel inside partly or completely eaten + filled with frass, infested nuts drop prematurely in summer, adult weevils visible on foliage in spring (7-8mm with long curved snout), pest pressure builds up over 2-3 seasons if not managed.

Plants affected

• European hazelnut

Common questions

How do I recognise hazelnut weevil on European hazelnut?

Small (1-2mm) perfectly circular exit hole in nut shell, kernel inside partly or completely eaten + filled with frass, infested nuts drop prematurely in summer, adult weevils visible on foliage in spring (7-8mm with long curved snout), pest pressure builds up over 2-3 seasons if not managed.

Do I have to report hazelnut weevil?

No. hazelnut weevil is not a notifiable organism, so there is nothing to report to an authority. Treat it as a normal garden problem.

How is hazelnut weevil treated?

Mainly with biological and cultural measures — removing affected material, changing the conditions that favour it, and treating with agents approved in your country. The exact steps and their timing depend on the plant, the season and where you live: Dr. Phyto works them out in a free diagnosis.