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What are root weevils?

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What are root weevils?

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Black vine weevils (Otiorhynchus sulcatus) [picture of black vine weevil] are one of numerous species of weevils (snout beetles) whose larvae feed on plant roots. Because larvae damage roots they are sometimes called root weevils. Root damage can be so severe that plants, especially young or shallow-rooted ones, can be killed. Older larvae can also girdle (remove bark) stems. In fact, root weevils are among the most damaging of woody landscape plant pests worldwide. Adult weevils feed on plant leaves resulting in characteristic notching (see photo right). There is generally only one generation per year and control efforts should be directed at newly emerged adults, not larvae. When notching of new growth is first found in early summer you should begin your control program. Common names and misspellings: strawberry weevil, obscure weevil, rootweevil, and blackvine weevil.

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