Certain species of Viburnum are susceptible to the Viburnum Leaf Beetle. The larvae of the beetle chews holes in the foliage of Viburnum and leaves the plant unsightly and weak, eventually leading to plant death.
These insects can be kept under control by doing several applications of Safer’s Soap and Mineral Oil during the growing season. Safer’s Soap and Mineral Oil are in the exempted list of chemicals that the City of Vancouver has created. They do not harm pets or people and are environmentally friendly.
We recommend a minimum of three treatments starting in early spring but more may be needed if the summer is long and dry.