Question: what is eating the leaves on my snowball bush?
Answer: Viburnum leaf beetle (Pyrrhalta viburni) is the insect causing this "shot hole" feeding on your snowball tree (Viburnum opulus 'Roseum'). It's become very widespread in the Lower Mainland since it was first identified back in 2001. ... The insects emerge in May as caterpillars, mainly on the underside of leaves.