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Vine Weevil on Clematis Jackmanii
How to identify and get rid of vine weevil on Clematis Jackmanii. Size: 8–10mm.
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Identifying vine weevil on Clematis Jackmanii
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 Clematis Jackmanii
Adults notch leaf margins. Larvae devastate root systems, causing sudden plant collapse.
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How to treat vine weevil on Clematis Jackmanii
Nematodes (Steinernema kraussei) applied to moist soil in spring/autumn. Systemic insecticide.
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Preventing vine weevil on Clematis Jackmanii
Check rootballs when repotting. Sticky traps. Nematodes as preventive measure.