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Use of insecticides for the management of the large pine weevil

Last updated :22 Oct 2026

Topic: Manage forests

This guidance covers the safe, legal and responsible use of insecticides or pre-treated trees in forestry so that to protect the water environment.

Summary

Following this guidance will avoid accidents happening on site as well as potential damage to the water environment.

The large pine weevil (Hylobius abietis) affects both conifer and broadleaved trees on newly and re-planted sites in Scotland.

Without protection losses of trees can average around 50% and in the worst cases all trees can be killed.

Use of insecticides for the management of the large pine weevil

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