Viburnum beetle

Viburnum beetle damage

Question ...

My Viburnum tinus has some leaves covered in lots of tiny holes - what causes this and what should be done about it?

Answer ...

The problem is viburnum beetle (Pyrrhalta viburni). The creamy white larvae cause the damage in early summer before pupating in the ground. In June, prune off the damamged areas, as adult beetles don't emerge until July and August. Viburnum are vigorous plants and the problem is seldom serious although it can be disfiguring. Harlequin ladybirds are the best predators, as are some birds. Hang fat balls in the bush to encourage birds to visit and eat the pupating larvae in the soil.

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