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Vine Weevil on Blackcurrant

How to identify and get rid of vine weevil on Blackcurrant. Size: 8–10mm.

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Identifying vine weevil on Blackcurrant

Adults: dull black beetles with pitted wing cases, active at night. Larvae: white C-shaped grubs in soil.

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Life cycle

Adults emerge spring/summer. Larvae overwinter in soil eating roots. One generation per year.

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Damage to Blackcurrant

Adults notch leaf margins. Larvae devastate root systems, causing sudden plant collapse.

healing

How to treat vine weevil on Blackcurrant

Nematodes (Steinernema kraussei) applied to moist soil in spring/autumn. Systemic insecticide.

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Preventing vine weevil on Blackcurrant

Check rootballs when repotting. Sticky traps. Nematodes as preventive measure.